Critical Accounting Policies and Estimates (Details) - USD ($)	6 Months Ended
Jun. 30, 2025	Dec. 31, 2024
Accounting Policies [Abstract]
Cash and cash equivalents	$ 43,212,000	$ 41,803,000
Accounts receivable for chargebacks	232,000	227,000
Allowance for slow moving and obsolete inventory	1,186,000	1,392,000
Contract assets	1,239,000	758,000
Amount of revenue from contract liabilities related to open jobs outstanding	2,215,000
Estimated liability for compensation claims	937,000	1,087,000
Liability for post retirement healthcare benefits	$ 3,355,000	$ 3,298,000

Amount of chargebacks to accounts receivable.

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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.

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Amount of valuation reserve for inventory.

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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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