Income Taxes - Difference Between Statutory U.S. Federal Income Tax and the Corporation's Effective Income Tax (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Computed at statutory rate	$ 1,167	$ (209)
State income taxes	(924)	(949)
Rate change	2,857	482
Tax differential on non-U.S. earnings		(49)
GILTI inclusion		305
Stock-based compensation	183	152
Meals and entertainment	28	10
Adjustments to net operating losses	296	275
(Decrease) increase in valuation allowance	(1,758)	2,225
Other – net	(273)	63
Total income tax provision	$ 1,576	$ 2,305	[1]

[1] Costs of products sold (excluding depreciation and amortization) and subsequent subtotals and totals along with net loss per share for 2021 were adjusted to include inventory costs using the FIFO basis of costing. See Note 2.