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Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Interactive Data Current Entity Interactive Data Current Schedule of Weighted Average Remaining Lease Terms and Interest Rates of Leases Schedule Of Weighted Average Remaining Lease Terms And Interest Rates Of Leases Table [Text Block] Schedule of weighted average remaining lease terms and interest rates of leases. 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Income Tax Authority Income Tax Authority [Domain] Organization, Consolidation and Presentation of Financial Statements [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Gross profit Gross Profit Gross Profit Concentration Risk Benchmark Concentration Risk Benchmark [Axis] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Maximum Maximum [Member] PMT Power And Microwave Technologies Group [Member] Power and microwave technologies group. Comprehensive income: Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Diluted Diluted [Member] Diluted. 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Document Information [Line Items] Document Information [Line Items] Warranties Standard Product Warranty, Policy [Policy Text Block] Weighted Average Number of Shares Outstanding, Basic, Total Weighted Average Number of Shares Outstanding, Basic Common shares - Basic Weighted Average Number of Shares Outstanding, Basic Share-based compensation: Share-Based Payment Arrangement, Noncash Expense [Abstract] Work in progress Inventory, Work in Process, Gross Financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Accrued Liabilities Accrued Liabilities Policy [Text Block] Accrued Liabilities, Policy Statement [Table] Statement [Table] Schedule Of Related Party Transactions By Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Document Fiscal Period Focus Document Fiscal Period Focus Total future minimum lease payments Total lease payments Lessee, Operating Lease, Liability, to be Paid Total non-current liabilities Liabilities, Noncurrent Related Party Transaction Related Party Transactions Disclosure [Text Block] 2026 Lessee, Operating Lease, Liability, to be Paid, Year Two Professional fees Accrued Professional Fees, Current Statement [Line Items] Statement [Line Items] Common stock options anti-dilutive Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Services revenue recognized as percentage of aggregate revenue Services Revenue Recognized As Percentage Of Aggregate Revenue Services revenue recognized as percentage of aggregate revenue. Net lease cost Lease, Cost Accounts receivable, less allowance of $197 and $191, respectively Accounts Receivable, after Allowance for Credit Loss, Current, Total Accounts Receivable, after Allowance for Credit Loss, Current GES Global Energy Solutions [Member] Global energy solutions. Common Stock Common Stock [Member] Debt Instrument [Line Items] Adjustments to reconcile net income to cash provided by (used in) operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Cash and Cash Equivalents, at Carrying Value, Total Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Finished goods Inventory, Finished Goods, Gross ASU 2016-13 Accounting Standards Update 2016-13 [Member] Thereafter Finite Lived Intangible Assets Amortization Expense After Year Four Finite-lived intangible assets, amortization expense, after year four. 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Remaining 2024 Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Common stock, outstanding (in shares) Beginning Balance (in shares) Ending Balance (in shares) Common Stock, Shares, Outstanding Basic Basic [Member] Basic. 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Net income Net income Other (income) expense: Nonoperating Income (Expense) [Abstract] Statement of Financial Position [Abstract] Weighted Average Number of Shares Outstanding, Diluted, Total Weighted Average Number of Shares Outstanding, Diluted Common shares - Diluted Weighted Average Number of Shares Outstanding, Diluted Credit Facility [Axis] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent, Total Effective Income Tax Rate Reconciliation, Percent Payments to Acquire Productive Assets, Total Capital expenditures Payments to Acquire Productive Assets Dividends per share: Dividends Per Share [Abstract] Dividends per share. Weighted average remaining lease term in years, operating leases Operating Lease, Weighted Average Remaining Lease Term Income Taxes Income Tax Disclosure [Text Block] Class B Dividends Common Stock Cash Class B Amount of paid and unpaid Class B common stock dividends declared with the form of settlement in cash. 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