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Critical Accounting Policies and Estimates (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Accounting Policies [Abstract] |  |
Allowance for doubtful accounts | $ 90,000 |
Accounts receivable for chargebacks | 123,000 | $ 138,000
Allowance for slow moving and obsolete inventory | 730,000 | 671,000
Amount of revenue from contract liabilities related to open jobs outstanding | 1,841,000 |
Estimated liability for compensation claims | 997,000 | 988,000
Liability for post retirement healthcare benefits | 3,008,000 | 3,116,000
Contract with Customer, Asset, after Allowance for Credit Loss, Current | 80,000 | 77,000
Cash and cash equivalents | $ 26,618,000 | $ 24,104,000

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