Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] Entities [Table] Entities [Table] Entities [Table] Document Information [Line Items] Document Information [Line Items] Document Information [Line Items] Document Type Document Type Document Type Amendment Flag Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Filer Category Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Statement Of Financial Position [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Statement [Table] Statement [Line Items] Statement [Line Items] Statement [Line Items] Assets [Abstract] ASSETS: ASSETS: Assets Current [Abstract] Current assets: Current assets: Cash and Cash Equivalents At Carrying Value Cash and cash equivalents Cash and cash equivalents Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Marketable Securities Current Marketable securities Marketable securities Accounts Receivable Net Current Accounts receivable, net of allowance for doubtful accounts of $400 at October 31, 2012 and April 30, 2012 Accounts receivable, net of allowance for doubtful accounts of $400 at October 31, 2012 and April 30, 2012 Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year Costs and estimated earnings in excess of billings, net Costs and estimated earnings in excess of billings, net Net asset Inventory Net Inventories Inventories, net Inventories, Net Deferred Tax Assets Net Current Deferred income taxes Deferred income taxes Prepaid Expense and Other Assets Current Prepaid expenses and other Prepaid expenses and other Assets Current Total current assets Total current assets Property Plant and Equipment Net Property, plant and equipment, at cost, less accumulated depreciation and amortization Property, plant and equipment, at cost, less accumulated depreciation and amortization Deferred Tax Assets Net Noncurrent Deferred income taxes Deferred income taxes Intangible Assets Net Including Goodwill Goodwill and other intangible assets Goodwill and other intangible assets Cash Surrender Value Of Life Insurance and Cash Held In Trust Cash surrender value of life insurance and cash held in trust Cash surrender value of life insurance and cash held in trust Cash Surrender Value Of Life Insurance And Cash Held In Trust Investments In Affiliates Subsidiaries Associates and Joint Ventures Investment in affiliates Investment in affiliates Other Assets Noncurrent Other assets Other assets Assets Assets Total assets Total assets Liabilities and Stockholders Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY: LIABILITIES AND STOCKHOLDERS' EQUITY: Liabilities Current [Abstract] Current liabilities: Current liabilities: Short Term Borrowings Short-term credit obligations Short-term credit obligations Accounts Payable Current Accounts payable - trade Accounts payable - trade Accrued Liabilities Current Accrued liabilities Accrued liabilities Accrued Income Taxes Current Income taxes payable Income taxes payable Liabilities Current Total current liabilities Total current liabilities Capital Lease Obligations Noncurrent Capital lease obligation- noncurrent Capital lease obligation- noncurrent Deferred Compensation Liability Classified Noncurrent Deferred compensation Deferred compensation Deferred Rent and Other Long Term Liabilities Noncurrent Deferred rent and other liabilities Deferred rent and other liabilities Deferred Rent And Other Long Term Liabilities Noncurrent Liabilities Total liabilities Total liabilities Commitments and Contingencies Commitments and contingencies Commitments and contingencies Stockholders Equity [Abstract] Stockholders' equity: Stockholders' equity: Preferred Stock Value Preferred stock - $1.00 par value Preferred stock - $1.00 par value Common Stock Value Common stock - $1.00 par value, issued 9,163,940 shares Common stock - $1.00 par value, issued 9,163,940 shares Additional Paid In Capital Additional paid-in capital Additional paid-in capital Retained Earnings Accumulated Deficit Retained earnings Retained earnings Stockholders Equity Before Treasury Stock Stockholders' Equity before Treasury Stock, Total Stockholders' Equity before Treasury Stock, Total Treasury Stock Value Common stock reacquired and held in treasury - at cost (771,639 shares at July 31, 2012 and 800,787 shares at April 30, 2012) Common stock reacquired and held in treasury - at cost (756,987 shares at October 31, 2012 and 800,787 shares at April 30, 2012) Accumulated Other Comprehensive Income Loss Net Of Tax Accumulated other comprehensive income Accumulated other comprehensive income Stockholders Equity Total stockholders' equity Total stockholders' equity Liabilities and Stockholders Equity Total liabilities and stockholders' equity Total liabilities and stockholders' equity Allowance For Doubtful Accounts Receivable Current Accounts receivable, allowance for doubtful accounts Accounts receivable, allowance for doubtful accounts Preferred Stock Par Or Stated Value Per Share Preferred stock, par value Preferred stock, par value Common Stock Par Or Stated Value Per Share Common stock, par value Common stock, par value Common Stock Shares Issued Common stock, issued Common stock, issued Treasury Stock Shares Common stock reacquired and held in treasury, shares Common stock reacquired and held in treasury, shares Income Statement [Abstract] Income Statement [Abstract] Income Statement [Abstract] Revenues Revenues Revenues Cost Of Revenue Cost of revenues Cost of revenues Gross Profit Gross margin Gross margin Selling General and Administrative Expense Selling and administrative expenses Selling and administrative expenses Research and Development Expense Research and development expense Research and development expense Operating Income Loss Operating profit (loss): Operating profit Operating profit Nonoperating Income Expense [Abstract] Other income (expense): Other income (expense): Investment Income Interest Investment income Investment income Income Loss From Equity Method Investments Equity loss Equity loss Asset Impairment Charges Impairment of investment in and loans receivable from affiliate Impairment of investment in and loans receivable from affiliate Interest Expense Interest expense Interest expense Other Nonoperating Income Expense Other (expense) income, net Other income (expense), net Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income before provision for income taxes Income before provision for income taxes Income Tax Expense Benefit Provision for income taxes Provision for income taxes Provision for income taxes Net Income Loss Net income Net income Net income Earnings Per Share [Abstract] Net income per common share Net income per common share Earnings Per Share Basic Basic Basic Earnings Per Share Diluted Diluted Diluted Weighted Average Number Of Shares Outstanding Diluted Disclosure Items [Abstract] Weighted average shares outstanding Weighted average shares outstanding Weighted Average Number Of Shares Outstanding Basic Basic Basic Weighted Average Number Of Diluted Shares Outstanding Diluted Diluted Diluted Comprehensive Income Net Of Tax [Abstract] Comprehensive Income Comprehensive Income Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract] Other comprehensive income (loss): Other comprehensive income (loss): Other Comprehensive Income Loss Foreign Currency Transaction and Translation Adjustment Net Of Tax Foreign currency translation adjustment Foreign currency translation adjustment Foreign currency translation adjustment Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax Change in market value of marketable securities Change in market value of marketable securities Change in market value of marketable securities Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax Deferred tax effect of change in marketable securities Deferred tax effect of change in marketable securities Other Comprehensive Income Loss Net Of Tax Total other comprehensive (loss) income Total other comprehensive income (loss) Comprehensive Income Net Of Tax Comprehensive income Comprehensive income Statement Of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Net Cash Provided By Used In Operating Activities [Abstract] Cash flows from operating activities: Cash flows from operating activities: Other Noncash Income Expense Non-cash charges to earnings and non-operating income or loss, net Non-cash charges to earnings and non-operating income or loss, net Increase Decrease In Operating Capital Net changes in operating assets and liabilities Net changes in operating assets and liabilities Net Cash Provided By Used In Operating Activities Net cash provided by (used in) operating activities Net cash (used in) provided by operating activities Net Cash Provided By Used In Investing Activities [Abstract] Cash flows from investing activities: Cash flows from investing activities: Proceeds From Sale and Maturity Of Marketable Securities Proceeds on redemption of marketable securities and sale of assets Proceeds on redemption of marketable securities Payments To Acquire Marketable Securities Purchase of marketable securities Purchase of marketable securities Proceeds From Collection Of (Payments To Fund) Long-Term Loans To Related Parties Loan to related party Payments To Acquire Property Plant and Equipment Purchase of fixed assets Purchase of fixed assets Net Cash Provided By Used In Investing Activities Net cash used in investing activities Net cash provided by (used in) investing activities Net Cash Provided By Used In Financing Activities [Abstract] Cash flows from financing activities: Cash flows from financing activities: Proceeds From Stock Options Exercised Proceeds from exercise of stock options Proceeds from exercise of stock options Proceeds From Lines Of Credit Proceeds from credit line borrowings Repayments Of Short-Term Debt Payment of short-term credit and lease obligations Payment of short-term credit and lease obligations Net Cash Provided By Used In Financing Activities Net cash used in financing activities Net cash provided by (used in) financing activities Cash and Cash Equivalents Period Increase Decrease Before Adjustment Net decrease in cash and cash equivalents before effect of exchange rate changes Net increase (decrease) in cash and cash equivalents before effect of exchange rate changes Cash and Cash Equivalents, Period Increase (Decrease) Before Adjustment Effect Of Exchange Rate On Cash and Cash Equivalents Effect of exchange rate changes on cash and cash equivalents Effect of exchange rate changes on cash and cash equivalents Cash and Cash Equivalents Period Increase Decrease Net decrease in cash and cash equivalents Net increase (decrease) in cash and cash equivalents Supplemental Cash Flow Information [Abstract] Supplemental disclosures of cash flow information: Supplemental disclosures of cash flow information: Cash Paid During Period For [Abstract] Cash paid during the period for: Cash paid during the period for: Cash Paid During Period For [Abstract] Interest Paid Interest Interest Income Taxes Paid Income Taxes Income Taxes Organization, Consolidation and Presentation Of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization Consolidation and Presentation Of Financial Statements Disclosure [Text Block] CONSOLIDATED FINANCIAL STATEMENTS CONSOLIDATED FINANCIAL STATEMENTS Earnings Per Share [Text Block] EARNINGS PER SHARE EARNINGS PER SHARE Contractors [Abstract] COSTS AND ESTIMATED EARNINGS IN EXCESS OF BILLINGS, NET COSTS AND ESTIMATED EARNINGS IN EXCESS OF BILLINGS, NET Long-Term Contracts Or Programs Disclosure [Text Block] Long-term Contracts or Programs Disclosure [Text Block] Equity [Abstract] Equity [Abstract] Treasury Stock [Text Block] TREASURY STOCK TRANSACTIONS TREASURY STOCK TRANSACTIONS Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Inventory Disclosure [Text Block] INVENTORIES INVENTORIES Segment Reporting [Abstract] Segment Reporting [Abstract] Segment Reporting Disclosure [Text Block] SEGMENT INFORMATION SEGMENT INFORMATION Investment Holdings [Abstract] Investment Holdings [Abstract] Investment Holdings [Text Block] INVESTMENT IN MORION, INC INVESTMENT IN MORION, INC Business Combinations [Abstract] Business Combinations [Abstract] Business Combination Disclosure [Text Block] ACQUISITION OF ELCOM TECHNOLOGIES, INC. ACQUISITION OF ELCOM TECHNOLOGIES, INC. Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] FAIR VALUE OF FINANCIAL INSTRUMENTS FAIR VALUE OF FINANCIAL INSTRUMENTS Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] INCOME TAXES INCOME TAXES New Accounting Pronouncements And Changes In Accounting Principles [Abstract] New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Description Of New Accounting Pronouncements Not Yet Adopted RECENTLY ISSUED ACCOUNTING PROUNCEMENTS Recently Issued Accounting Pronouncements Schedule Of Earnings Per Share Reconciliation Table [Text Block] Reconciliation of Weighted Average Shares Outstanding for Basic and Diluted Earnings per Share Reconciliation of Weighted Average Shares Outstanding for Basic and Diluted Earnings per Share Schedule Of Share-Based Compensation, Stock Options and Stock Appreciation Rights Award Activity [Table Text Block] Computation Of Diluted Earnings Per Share Cost and Estimated Earnings On Uncompleted Contracts Table [Text Block] Costs and Estimated Earnings in Excess of Billings, Net Costs and Estimated Earnings in Excess of Billings, Net Cost and Estimated Earnings on Uncompleted Contracts Schedule Of Inventory Current Table [Text Block] Inventories Reported at Lower of Cost or Market Inventories Reported at Lower of Cost or Market Reconciliation Of Operating Profit Loss From Segments To Consolidated [Text Block] Reconciliation of Segment Operating Profit to Consolidated Operating Profit Reconciliation of Segment Operating Profit to Consolidated Operating Profit Reconciliation Of Assets From Segment To Consolidated [Text Block] Reconciliation of Segment Identifiable Assets to Consolidated Assets Reconciliation of Segment Identifiable Assets to Consolidated Assets Business Acquisition Pro Forma Information [Text Block] Pro Forma Results of Operations Pro Forma Results of Operations Available For Sale Securities [Text Block] Costs, Gross Unrealized Gains, Gross Unrealized Losses and Fair Market Value of Available-For-Sale Securities Costs, Gross Unrealized Gains, Gross Unrealized Losses and Fair Market Value of Available-For-Sale Securities Unrealized Gain Loss On Investments Table [Text Block] Fair Value and Unrealized Losses, Aggregated by Investment Type and Length of Time Individual Securities have been in Continuous Unrealized Loss Position Fair Value and Unrealized Losses, Aggregated by Investment Type and Length of Time Individual Securities have been in Continuous Unrealized Loss Position Disclosure Reconciliation Of Weighted Average Shares Outstanding For Basic and Diluted Earnings Per Share [Abstract] Disclosure - Reconciliation of Weighted Average Shares Outstanding for Basic and Diluted Earnings per Share [Abstract] Disclosure - Reconciliation of Weighted Average Shares Outstanding for Basic and Diluted Earnings per Share [Abstract] Disclosure - Reconciliation of Weighted Average Shares Outstanding for Basic and Diluted Earnings per Share [Abstract] Schedule Of Weighted Average Number Of Shares Outstanding [Table] Schedule of Weighted Average Number of Shares Outstanding [Table] Schedule of Weighted Average Number of Shares Outstanding [Table] Schedule of Weighted Average Number of Shares Outstanding [Table] Weighted Average Number Of Shares Outstanding [Line Items] Weighted average shares outstanding: Weighted average shares outstanding: Weighted Average Number of Shares Outstanding [Line Items] Weighted Average Number Diluted Shares Outstanding Adjustment Effect of dilutive securities Effect of dilutive securities Schedule Of Share Based Compensation Stock Options and Stock Appreciation Rights Award Activity [Abstract] Schedule Of Share-Based Compensation Stock Options and Stock Appreciation Rights Award Activity [Abstract] Schedule Of Share Based Compensation Stock Options and Stock Appreciation Rights Award Activity [Table] Schedule Of Share-Based Compensation Stock Options and Stock Appreciation Rights Award Activity [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] Stock Appreciation Rights (Sars) [Member] Stock Option [Line Items] Stock Option [Line Items] Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding and Stock Appreciation Rights Excluded Outstanding options and SARS excluded Share-based Compensation Arrangement by Share-based Payment Award Options Outstanding and Stock Appreciation Rights Excluded. Disclosure Costs and Estimated Earnings In Excess Of Billings Net [Abstract] Disclosure - Costs and Estimated Earnings in Excess of Billings, Net [Abstract] Disclosure - Costs and Estimated Earnings in Excess of Billings, Net [Abstract] Disclosure - Costs and Estimated Earnings in Excess of Billings, Net [Abstract] Liabilities For Guarantees On Long Duration Contracts [Table] Liabilities for Guarantees on Long-Duration Contracts [Table] Liabilities for Guarantees on Long-Duration Contracts [Table] Costs And Estimated Earnings In Excess Of Billings Net Line Item Costs and Estimated Earnings in Excess of Billings, Net [Line Items] Liabilities for Guarantees on Long-Duration Contracts [Line Items] Costs In Excess Of Billings On Uncompleted Contracts Or Programs Costs and estimated earnings in excess of billings Costs and estimated earnings in excess of billings Billings In Excess Of Cost Billings in excess of costs and estimated earnings Billings in excess of costs and estimated earnings Disclosure C O S T S N D E S T I M T E D E R N I N G S I N E X C E S S O F B I L L I N G S N E T Additional Information [Abstract] Disclosure - COSTS AND ESTIMATED EARNINGS IN EXCESS OF BILLINGS, NET - Additional Information [Abstract] Disclosure - COSTS AND ESTIMATED EARNINGS IN EXCESS OF BILLINGS, NET - Additional Information [Abstract] Disclosure - COSTS AND ESTIMATED EARNINGS IN EXCESS OF BILLINGS, NET - Additional Information [Abstract] Change In Accounting Estimate By Type [Axis] Change in Accounting Estimate by Type [Axis] Change in Accounting Estimate by Type [Axis] Change In Accounting Estimate Type [Domain] Change in Accounting Estimate, Type [Domain] Change in Accounting Estimate, Type [Domain] Contracts Accounted For Under Percentage Of Completion [Member] Contracts Accounted for under Percentage of Completion Disclosure T R E S U R Y S T O C K T R N S C T I O N S Additional Information [Abstract] Disclosure - TREASURY STOCK TRANSACTIONS - Additional Information [Abstract] Disclosure - TREASURY STOCK TRANSACTIONS - Additional Information [Abstract] Disclosure - TREASURY STOCK TRANSACTIONS - Additional Information [Abstract] Class Of Treasury Stock [Table] Class of Treasury Stock [Table] Class of Treasury Stock [Table] Equity Class Of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Stock Issued During Period Shares Four Zero One K Contribution Shares of common stock held in treasury Shares of common stock held in treasury Stock Issued During Period, Shares, 401(k) Contribution Stock Issued During Period Shares Treasury Stock Reissued Shares issued from treasury upon the exercise of stock options and SARS Shares issued from treasury upon the exercise of stock options and SARs Disclosure Inventories Reported At Lower Of Cost Or Market [Abstract] Disclosure - Inventories Reported at Lower of Cost or Market [Abstract] Disclosure - Inventories Reported at Lower of Cost or Market [Abstract] Disclosure - Inventories Reported at Lower of Cost or Market [Abstract] Inventory Disclosure [Table] Inventory Disclosure [Table] Inventory Disclosure [Table] Inventory Disclosure [Table] Inventory Disclosure [Line Items] Inventory Disclosure [Line Items] Inventory Disclosure [Line Items] Inventory Disclosure [Line Items] Inventory Raw Materials Raw Materials and Component Parts Raw Materials and Component Parts Inventory Work In Process Work in Progress Work in Progress Inventory Finished Goods Finished Goods Finished Goods Disclosure I N V E N T O R I E S Additional Information [Abstract] Disclosure - INVENTORIES - Additional Information [Abstract] Disclosure - INVENTORIES - Additional Information [Abstract] Disclosure - INVENTORIES - Additional Information [Abstract] Statement Business Segments [Axis] Business Segments [Axis] Business Segments [Axis] Segment [Domain] Segment [Domain] Segment [Domain] U S UNITED STATES B E BELGIUM C N CHINA Disclosure Segment Information Additional Information [Abstract] Disclosure Segment Information Additional Information [Abstract] Disclosure Segment Information Additional Information [Abstract] Disclosure Segment Information Additional Information [Abstract] Reconciliation Of Assets From Segment To Consolidated [Table] Reconciliation of Assets from Segment to Consolidated [Table] Reconciliation of Assets from Segment to Consolidated [Table] Frequency Electronics Inc New York [Member] FEI-NY (approximately $3 million in China) FEI-NY Frequency Electronics Inc New York [Member] Segment Reporting Asset Reconciling Item [Line Items] Segment Reporting, Asset Reconciling Item [Line Items] Segment Reporting, Asset Reconciling Item [Line Items] Number Of Reportable Segments Number of reportable segments Number of reportable segments Number Of Principal Markets Number of principal markets Number of principal markets Number of Principal Markets Disclosure Reconciliation Of Segment Revenues and Operating Profit Loss To Consolidated [Abstract] Disclosure - Reconciliation of Segment Revenues and Operating Profit (Loss) to Consolidated [Abstract] Disclosure - Reconciliation of Segment Revenues and Operating Profit (Loss) to Consolidated [Abstract] Disclosure - Reconciliation of Segment Revenues and Operating Profit (Loss) to Consolidated [Abstract] Reconciliation Of Operating Profit Loss From Segments To Consolidated [Table] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Gillam Frequency Electronics Inc [Member] Gillam-FEI (all in Belgium or France) Gillam-FEI Gillam Frequency Electronics Inc [Member] Frequency Electronics Inc Zyfer [Member] FEI-Zyfer FEI-Zyfer Frequency Electronics Inc Zyfer [Member] Inter Segment [Member] Inter Segment Inter Segment [Member] Corporate [Member] Corporate Corporate Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Disclosure Reconciliation Of Segment Identifiable Assets To Consolidated Assets [Abstract] Disclosure - Reconciliation of Segment Identifiable Assets to Consolidated Assets [Abstract] Disclosure - Reconciliation of Segment Identifiable Assets to Consolidated Assets [Abstract] Disclosure - Reconciliation of Segment Identifiable Assets to Consolidated Assets [Abstract] Frequency Electronics Inc New York China [Member] Frequency Electronics Inc New York China Frequency Electronics Inc New York China [Member] Disclosure Investment In Morion Inc Additional Information [Abstract] Disclosure - Investment in Morion Inc - Additional Information [Abstract] Disclosure - Investment in Morion Inc - Additional Information [Abstract] Disclosure - Investment in Morion Inc - Additional Information [Abstract] Schedule Of Related Party Transactions By Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party Transactions By Related Party [Axis] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Related Party [Domain] Morion Inc [Member] Morion Morion Inc [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Cost Method Investment Ownership Percentage Cost method investment ownership percentage Cost method investment ownership percentage Cost Method Investment, Ownership Percentage Related Party Transaction, Purchases From Related Party Purchases from related party Purchases from related party Revenue From Related Parties Revenue from related party Revenue from related party Due From Related Parties Current Due from related party Due from related party Disclosure C Q U I S I T I O N O F E L C O M T E C H N O L O G I E S I N C Additional Information [Abstract] Disclosure - ACQUISITION OF ELCOM TECHNOLOGIES, INC. - Additional Information [Abstract] Disclosure - ACQUISITION OF ELCOM TECHNOLOGIES, INC. - Additional Information [Abstract] Disclosure - ACQUISITION OF ELCOM TECHNOLOGIES, INC. - Additional Information [Abstract] Schedule Of Business Acquisitions By Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition Acquiree [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Elcom Technologies Inc [Member] Elcom Elcom Technologies Inc [Member] F E I Elcom [Member] FEI-Elcom FEI-Elcom [Member] Financing [Axis] Financing [Axis] Financing [Axis] Financing [Domain] Financing [Domain] Financing [Domain] Common Stock Shares [Member] Common Stock Shares The most subordinated ownership interest in a corporation - Number of Shares Settlement Of Debt [Member] Settlement of Debt Business Acquisition [Line Items] Business Acquisition [Line Items] Business Acquisition [Line Items] Business Combination Step Acquisition Equity Interest In Acquiree Percentage Percentage of capital stock purchased Percentage of capital stock purchased Minority Interest Ownership Percentage By Noncontrolling Owners Percentage of minority ownership interest Percentage of minority ownership interest Business Acquisition Percentage Of Voting Interests Acquired Percentage of fully owned stock of subsidiary Percentage of fully owned stock of subsidiary Business Acquisition Cost Of Acquired Entity Cash Paid Cash payment at acquisition Cash payment at acquisition Receivable Transfer To Investment Forgiven receivable transferred to investment Forgiven receivable transferred to investment Receivable Transfer to Investment Business Combination Step Acquisition Equity Interest In Acquiree Fair Value Fair value of subsidiary at the date of acquisition Fair value of subsidiary at the date of acquisition Fair Value Inputs Control Premium Adjustment for control premium Adjustment for control premium Business Acquisition Purchase Price Allocation Tangible Assets Purchase price allocation to tangible assets Purchase price allocation to tangible assets Business Acquisition Purchase Price Allocatioin Deferred Tax Asset Purchase price allocation to deferred taxes Purchase price allocation to deferred taxes Business Acquisition Purchase Price Allocatioin Deferred Tax Asset Business Acquisition Purchase Price Allocation Intangible Assets and Goodwill Purchase price allocation to intangible assets including goodwill Purchase price allocation to intangible assets including goodwill Business Acquisition, Purchase Price Allocation, Intangible Assets and Goodwill Business Acquisition Purchase Price Allocation Goodwill Amount Purchase price allocation to goodwill Purchase price allocation to goodwill Other Than Temporary Impairment Losses, Investments Impairment charges of investment Impairment charges of investment Professional Fees Payment for professional fees Payment for professional fees Interest Income, Other Interest income on notes receivable Interest income on notes receivable Gain Loss On Investments Gain on investment of subsidiary Gain on investment of subsidiary Additional Allowance For Investment Against Notes Receivable Additional Allowance For Investment Against Notes Receivable Amount of additional allowance for investment against the notes receivable. Disclosure Pro Forma Results Of Operations [Abstract] Disclosure - Pro Forma Results of Operations [Abstract] Disclosure - Pro Forma Results of Operations [Abstract] Disclosure - Pro Forma Results of Operations [Abstract] Business Acquisitions Pro Forma Revenue Revenues Revenues Business Acquisition Pro Forma Operating Income Loss Operating profit Operating profit Business Acquisition, Pro Forma Operating Income (Loss) Business Acquisitions Pro Forma Net Income Loss Net income Net income Business Acquisition Pro Forma Earnings Per Share Basic Earnings per share- basic Earnings per share- basic Business Acquisition Pro Forma Earnings Per Share Diluted Earnings per share- diluted Earnings per share- diluted Disclosure Cost Gross Unrealized Gains Gross Unrealized Losses and Fair Market Value Of Availablefor Sale Securities [Abstract] Disclosure - Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Market Value of Available-for-Sale Securities [Abstract] Disclosure - Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Market Value of Available-for-Sale Securities [Abstract] Disclosure - Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Market Value of Available-for-Sale Securities [Abstract] Schedule Of Available For Sale Securities [Table] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Eligible Item Or Group For Fair Value Option [Axis] Eligible Item or Group for Fair Value Option [Axis] Eligible Item or Group for Fair Value Option [Axis] Fair Value Option Eligible Item Or Group [Domain] Fair Value, Option, Eligible Item or Group [Domain] Fair Value, Option, Eligible Item or Group [Domain] Fixed Income Securities [Member] Fixed income securities Fixed income securities Equity Securities [Member] Equity securities Equity securities Schedule Of Available For Sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Available For Sale Securities Amortized Cost Cost October 31, 2012 Availableforsale Securities Gross Unrealized Gain Gross Unrealized Gains October 31, 2012 Available For Sale Securities Gross Unrealized Losses 1 Gross Unrealized Losses Gross Unrealized Losses Available For Sale Securities Fair Value Disclosure Fair Market Value Available For Sale Securities Fair Value Disclosure Disclosure Fair Value and Unrealized Losses Aggregated By Investment Type and Length Of Time Individual Securities Have Been In Continuous Unrealized Loss Position [Abstract] Disclosure - Fair Value and Unrealized Losses, Aggregated by Investment Type and Length of Time Individual Securities have been in Continuous Unrealized Loss Position [Abstract] Disclosure - Fair Value and Unrealized Losses, Aggregated by Investment Type and Length of Time Individual Securities have been in Continuous Unrealized Loss Position [Abstract] Disclosure - Fair Value and Unrealized Losses, Aggregated by Investment Type and Length of Time Individual Securities have been in Continuous Unrealized Loss Position [Abstract] Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value Fair Value Fair Value Availableforsale Securities Continuous Unrealized Loss Position Less Than 12 Months Aggregate Losses 2 Unrealized Losses Unrealized Losses Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value Fair Value Fair Value Availableforsale Securities Continuous Unrealized Loss Position 12 Months Or Longer Aggregate Losses 2 Unrealized Losses Unrealized Losses Available For Sale Securities Continuous Unrealized Loss Position Fair Value Fair Value Fair Value Availableforsale Securities Continuous Unrealized Loss Position Aggregate Losses 2 Unrealized Losses Unrealized Losses Disclosure F I R V L U E O F F I N N C I L I N S T R U M E N T S Additional Information [Abstract] Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Additional Information [Abstract] Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Additional Information [Abstract] Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Additional Information [Abstract] Redeemed Securities [Member] Redeemed Available-for-Sale Securities Redeemed Securities [Member] Available For Sale Securities Redeemed available-for-sale securities Redeemed available-for-sale securities Available-For-Sale Securities, Gross Realized Gains Realized gain Realized gain Disclosure Maturities Of Fixed Income Securities Classified As Availablefor Sale [Abstract] Disclosure - Maturities of Fixed Income Securities Classified as Available-for-Sale [Abstract] Disclosure - Maturities of Fixed Income Securities Classified as Available-for-Sale [Abstract] Disclosure - Maturities of Fixed Income Securities Classified as Available-for-Sale [Abstract] Investment [Axis] Investment [Axis] Investment [Axis] Investment [Domain] Investment [Domain] Investment [Domain] Fixed Maturities [Member] Fixed Maturities Available For Sale Securities Current Current Current Available For Sale Securities Debt Maturities After One Through Five Years Fair Value Due after one year through five years Due after one year through five years Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value Due after five years through ten years Due after five years through ten years Disclosure Income Taxes Additional Information [Abstract] Disclosure Income Taxes Additional Information [Abstract] Disclosure Income Taxes Additional Information [Abstract] Disclosure Income Taxes Additional Information [Abstract] Valuation Allowance [Table] Valuation Allowance [Table] Valuation Allowance [Table] Valuation Allowance [Line Items] Valuation Allowance [Line Items] Valuation Allowance [Line Items] Deferred Tax Assets Valuation Allowance Remaining deferred tax asset valuation allowance Remaining deferred tax asset valuation allowance Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Minimum Number Of Rubidium Oscillators To Be Produced Per Year Under Agreement Terms Minimum Number Of Rubidium Oscillators To Be Produced Per Year Under Agreement Terms Minimum number of rubidium oscillators to be produced per year under agreement terms License And Equipment Fee Receivable License And Equipment Fee Receivable License and equipment fee receivable Percentage Of Royalties Payable On Third Party Sales Percentage of royalties payable on third party sales Percentage of royalties payable on third party sales Royalty Payable Period Royalty payable period Royalty payable period Commiment For Puchase Of Minimum Number Of Rubidium Oscillators In Royalty Payable Period Commiment for puchase of minimum number of rubidium oscillators in royalty payable period Commiment for puchase of minimum number of rubidium oscillators in royalty payable period Sales Revenue, Goods, Net Sales revenue Maturities of Fixed Income Securities Classified as Available-for-Sale Fair Value By Balance Sheet Grouping [Text Block] Subsequent Events [Abstract] Subsequent Events [Text Block] SUBSEQUENT EVENT Subsequent Event [Table] Subsequent Event [Line Items] Dividends Payable Date Of Record Day Month And Year Shareholders of record on December 24, 2012 Dividends Payable Date Declared Day Month And Year Shareholders of payable declared on December 12, 2012 Company's board of directors declared a special cash dividend Due to Related Parties, Current Due to related party Proceeds from License Fees Received Proceeds from license fees received Minimum Worth Of Rubidium Oscillators This elements represents the minimum worth of the Rubidium Oscillators. Minimum worth of rubidium oscillators Disclosure Subsequent Event Additional Information [Abstract]