Critical Accounting Policies and Estimates (Details) - USD ($)	3 Months Ended
Mar. 31, 2025	Dec. 31, 2024
Accounting Policies [Abstract]
Accounts receivable for chargebacks	$ 232,000	$ 227,000
Allowance for slow moving and obsolete inventory	1,203,000	1,392,000
Amount of revenue from contract liabilities related to open jobs outstanding	321,000
Estimated liability for compensation claims	912,000	1,087,000
Liability for post retirement healthcare benefits	3,329,000	3,298,000
Contract with Customer, Asset, after Allowance for Credit Loss, Current	4,767,000	758,000
Cash and cash equivalents	$ 44,474,000	$ 41,803,000

Amount of chargebacks to accounts receivable.

No definition available.

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- Definition

Contract With Customer, Liability, Including New Contract Revenue Recognized

+ References

No definition available.

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- References

No definition available.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

+ References

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- Definition

Amount of valuation reserve for inventory.

+ References

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The carrying amount as of the balance sheet date of the obligations recognized for the various benefits provided to former or inactive employees, their beneficiaries, and covered dependents after employment but before retirement.

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Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property.

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