Cash and cash equivalents Accounts receivable, net of allowances of $110 at October 31, 2024 and April 30, 2024 Accounts receivable, allowances (in Dollars) Contract assets Inventories Inventories Prepaid income taxes Prepaid expenses and other Total current assets Property, plant, and equipment, net Cash surrender value of life insurance Right-of-use assets – operating leases Operating lease ROU assets Other assets Total assets Identifiable Assets Accounts payable Accrued liabilities Loss provision accrual Operating lease liability - current portion Operating lease liabilities (short-term) Less current obligations under leases Total current liabilities Deferred compensation Operating lease liability – non-current portion Operating lease liabilities (long-term) Long-term lease obligations Total liabilities Preferred stock - $1.00 par value; authorized 600 shares, no shares issued Preferred stock, par value (in Dollars per share) Common stock - $1.00 par value; authorized 20,000 shares, 9,621 shares issued and 9,604 shares outstanding at October 31, 2024; 9,512 shares issued and 9,511 shares outstanding at April 30, 2024 Common stock, par value (in Dollars per share) Common stock shares issued Additional paid-in capital Accumulated deficit Total stockholders’ equity Balance Balance Total liabilities and stockholders’ equity Revenues Revenue Cost of revenues Gross margin Selling and administrative expenses Research and development expenses Operating income Consolidated operating income Investment income (expense) Interest expense Income before provision for income taxes Provision for income taxes Net income Net income Non-cash charges to earnings Net changes in operating assets and liabilities Net cash provided by (used in) operating activities Net cash used in investing activities Net cash used in financing activities Net decrease in cash and cash equivalents and restricted cash Cash and cash equivalents and restricted cash at beginning of period Cash and cash equivalents and restricted cash at end of period Total cash and cash equivalents and restricted cash Balance (in Shares) Balance (in Shares) Equity Components [Axis] Diluted EPS shares outstanding Basic and diluted (in Shares) Raw materials and component parts Work in progress Finished goods Total lease liabilities Present value of future lease payments Total lease payments Segments [Axis] Product and Service [Axis] ASSETS: Current assets: Goodwill Restricted cash LIABILITIES AND STOCKHOLDERS’ EQUITY: Current liabilities: Income taxes payable Contract liabilities Deferred taxes Stockholders’ equity: Preferred stock - shares authorized Preferred stock - shares issued Common stock - authorized shares Common stock - shares outstanding Common stock reacquired and held in treasury - share Other income (expense): Other expense, net Net income per common share: Basic and diluted income per share (in Dollars per share) Basic and diluted income per share (in Dollars per share) Weighted average shares outstanding: Basic and diluted (in Shares) Basic EPS shares outstanding (weighted average) Cash flows from operating activities: Cash flows from investing activities: Cash flows from financing activities: Supplemental disclosures of cash flow information: Cash paid during the period for: Interest Income taxes Contribution of stock to 401(k) plan Contribution of stock to 401(k) plan (in Shares) Stock Issued During Period, Shares, Employee Benefit Plan (in Shares) Stock-based compensation expense Stock-based compensation expense (in Shares) Shares withheld on employee taxes on vested equity awards Shares withheld on employee taxes on vested equity awards (in Shares) Exercise of stock options and stock appreciation rights - net of shares tendered for exercise price Exercise of stock options and stock appreciation rights - net of shares tendered for exercise price (in Shares) Dividends payable Common stock reacquired and held in treasury - at cost (13 shares at October 31, 2024 and 1 share at April 30, 2024) Purchase of property, plant, and equipment, and other assets Payment of dividend Dividends paid Payments of Dividends (in Dollars) Purchase of Treasury stock Common Stock [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Treasury Stock, Common [Member] AOCI Attributable to Parent [Member] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Earnings Per Share [Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Weighted average shares outstanding: Effect of dilutive securities Long-Term Contracts or Programs Disclosure [Text Block] Compensation and Employee Benefit Plans [Text Block] Inventory Disclosure [Text Block] Schedule of Inventory, Current [Table Text Block] Lessee, Operating Leases [Text Block] Lease, Cost [Table Text Block] Assets Liabilities Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Remainder of 2025 2026 2027 2028 2029 Thereafter Segment Reporting Disclosure [Text Block] Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Revenues: Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Operating income: Reconciliation of Assets from Segment to Consolidated [Table Text Block] Identifiable assets: Disaggregation of Revenue [Table Text Block] Revenue from External Customers by Products and Services [Table Text Block] Revenues by product line: Investment Holdings [Text Block] Restricted Assets Disclosure [Text Block] Restrictions on Cash and Cash Equivalents [Table Text Block] Restricted cash Accounting Standards Update and Change in Accounting Principle [Text Block] Income Tax Disclosure [Text Block] Less imputed interest Frequency Electronics Inc New York [Member] Frequency Electronics Inc Zyfer [Member] Inter Segment [Member] Corporate Segment [Member] POC Revenue [Member] POT Revenue [Member] Satellite Revenue [Member] Government Non-Space Revenue [Member] Other Commercial & Industrial Revenue [Member] Principal Transaction Revenue, Description of Reporting Category [Axis] Nature of Expense [Axis] Investment, Name [Axis] Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Common Stock, Dividends, Per Share, Declared (in Dollars per share) Loss on Contracts Increase (Decrease) in Contract with Customer, Liability Deferred Compensation Arrangement with Individual, Compensation Expense Deferred Compensation Arrangement with Individual, Distribution Paid Operating Lease, Expense Operating Lease, Weighted Average Remaining Lease Term Operating Lease, Weighted Average Discount Rate, Percent Number of Reportable Segments Number Of Principal Markets Cost Method Investment Ownership Percentage Investments Restricted Cash Contract Liabilities [Member] Interest Expense [Member] Morion Inc [Member] Equity Component [Domain] Statement [Table] Statement [Line Items] Segments [Domain] Reconciliation of Revenue from Segments to Consolidated [Table] Segment Reporting, Revenue Reconciling Item [Line Items] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Reconciliation of Assets from Segment to Consolidated [Table] Segment Reporting, Asset Reconciling Item [Line Items] Product and Service [Domain] Disaggregation of Revenue [Table] Disaggregation of Revenue [Line Items] Segment Reporting, Revenue from External Customer, Product and Service [Table] Revenue from External Customer [Line Items] PrincipleTransactionRevenueDescriptionOfReportingCategoryDomain [Domain] CONTRACT ASSETS AND LIABILITIES (Details) [Table] CONTRACT ASSETS AND LIABILITIES (Details) [Line Items] Interim Period, Costs Not Allocable [Domain] EMPLOYEE BENEFIT PLANS (Details) [Table] EMPLOYEE BENEFIT PLANS (Details) [Line Items] SEGMENT INFORMATION (Details) [Table] SEGMENT INFORMATION (Details) [Line Items] Investment, Name [Domain] INVESTMENT IN MORION, INC. (Details) [Table] INVESTMENT IN MORION, INC. (Details) [Line Items] Carry amount, as of the balance sheet date, of the cash surrender value of life insurance and cash held in trust. The percentage of ownership in the investee accounted for under the cost method of accounting. Number of Principal Markets Components of an entity that engage in business activities from which they may earn revenue and incur expenses, including transactions with other components of the same entity. Components of an entity that engage in business activities from which they may earn revenue and incur expenses, including transactions with other components of the same entity. Product or service. Components of an entity that engage in business activities from which they may earn revenue and incur expenses, including transactions with other components of the same entity. Name of investment. Product or service. Type of revenue. Type of revenue. Product or service. Stock Issued During Period, Value, Treasury Stock Reissued Deferred Compensation Arrangement with Individual, Distribution Paid Assets [Abstract] Net Income Per Common Share Abstract Interest Expense [Member] Earnings Per Share, Diluted POTRevenue Member Retained Earnings [Member] Cash Flows From Investing Activities Abstract Investment Holdings [Text Block] Disaggregation of Revenue [Abstract] Weighted Average Number of Shares Outstanding, Basic Frequency Electronics Inc Zyfer Member Restricted Cash, Noncurrent Other Nonoperating Income (Expense) Statement of Stockholders' Equity [Abstract] Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents POCRevenue Member Income Statement [Abstract] Lessee, Operating Leases [Text Block] Accounting Standards Update and Change in Accounting Principle [Text Block] Number Of Principal Markets Earnings Per Share, Basic Reconciliation Of Revenue From Segments To Consolidated Abstract Other Noncash Income (Expense) Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Schedule Of Reconciliation Of Assets From Segment To Consolidated Abstract Treasury Stock, Value Revenues [Abstract] Assets Liabilities Equity, Attributable to Parent [Abstract] Preferred Stock, Shares Issued Inventory Disclosure [Abstract] Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Loss on Contracts Common Stock, Shares, Outstanding Restrictions on Cash and Cash Equivalents [Table Text Block] Lessee, Operating Lease, Liability, to be Paid, Year Three Net Cash Provided by (Used in) Investing Activities Revenue From External Customers By Products And Services Abstract Restricted Assets Disclosure [Text Block] Payments to Acquire Property, Plant, and Equipment Preferred Stock, Shares Authorized Treasury Stock, Common [Member] Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Inventory Disclosure [Text Block] Disclosure Text Block Supplement [Abstract] Accrued Income Taxes, Current Accounting Policies [Abstract] Net Cash Provided by (Used in) Financing Activities Long-Term Contracts or Programs Disclosure [Text Block] Other Commercial Industrial Revenue Member Common Stock, Shares Authorized Stock Issued During Period, Value, Employee Benefit Plan Operating Lease, Weighted Average Discount Rate, Percent Lessee Operating Lease Liability Maturity Abstract Additional Paid-in Capital [Member] Deferred Income Tax Liabilities, Net Lessee, Operating Lease, Liability, to be Paid, Year Four Operating Income (Loss) Payments for Repurchase of Common Stock Restricted Cash Restricted Cash and Cash Equivalents, Current Operating Lease, Liability Investments Goodwill Corporate Segment [Member] Common Stock [Member] Operating Income Abstract AOCI Attributable to Parent [Member] Statement of Cash Flows [Abstract] Interest Expense, Operating and Nonoperating Lessee, Operating Lease, Liability, to be Paid, Year Two Income Tax Disclosure [Text Block] Accounting Standards Update and Change in Accounting Principle [Abstract] Reconciliation Of Cash And Cash Equivalents And Restricted Cash Abstract Other Income Expense Abstract Schedule Of Inventory Current Abstract Compensation and Employee Benefit Plans [Text Block] Schedule Of Earnings Per Share Basic And Diluted Abstract Frequency Electronics Inc New York Member Identifiable Assets Abstract Contract Liabilities Member Liabilities, Current [Abstract] Net Cash Provided by (Used in) Operating Activities Deferred Compensation Arrangement with Individual, Compensation Expense Satellite Revenue Member Schedule of Investments [Abstract] Income Tax Disclosure [Abstract] Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Lessee, Operating Lease, Liability, to be Paid, Year Five Operating Lease, Weighted Average Remaining Lease Term Equity, Attributable to Parent Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract] Earnings Per Share [Text Block] Schedule of Inventory, Current [Table Text Block] Stock Issued During Period, Value, Stock Options Exercised Treasury Stock, Common, Shares Assets Abstract0 Increase (Decrease) in Contract with Customer, Liability Payments of Dividends Earnings Per Share [Abstract] Contract with Customer, Liability, Current Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Segment Reporting Disclosure [Text Block] Cash Paid During The Period For Abstract Lease, Cost [Table Text Block] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Adjustments to Additional Paid in Capital, Dividends in Excess of Retained Earnings Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Weighted Average Number of Shares Outstanding, Diluted Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Government Non Space Revenue Member Gross Profit Morion Inc Member Cash Flows From Operating Activities Abstract Stock Issued During Period, Shares, Employee Benefit Plan Operating Lease, Expense Inter Segment Member Interest Paid, Including Capitalized Interest, Operating and Investing Activities Cash Flows From Financing Activities Abstract Lessee, Operating Lease, Liability, to be Paid Disaggregation of Revenue [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Contractors [Abstract] Assets, Current [Abstract] Common Stock, Dividends, Per Share, Declared Cost Method Investment Ownership Percentage Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Liabilities, Current Statement of Financial Position [Abstract] Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Supplemental Disclosures Of Cash Flow Information Abstract Increase (Decrease) in Operating Capital Liabilities and Equity [Abstract] Shares, Outstanding Revenues By Product Line Abstract Lessee, Operating Lease, Liability, to be Paid, Year One Segment Reporting [Abstract] Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Stock Issued During Period, Shares, Conversion of Convertible Securities Disclosure Text Block [Abstract] Weighted Average Shares Outstanding Abstract0 Weighted Average Shares Outstanding Abstract Income Taxes Paid Weighted Average Number of Shares Outstanding, Diluted, Adjustment Liabilities and Equity Liabilities [Abstract] Lessee, Operating Lease, Liability, Undiscounted Excess Amount Lease, Cost [Abstract] Number of Reportable Segments Revenue from External Customers by Products and Services [Table Text Block] Assets, Current Reconciliation of Assets from Segment to Consolidated [Table Text Block]