Quarterly Financial Data (Unaudited) - Summery of Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Quarterly Financial Information Disclosure [Abstract]
REVENUES	$ 8,673	$ 8,417	$ 7,064	$ 7,691	$ 6,860	$ 7,173	$ 6,407	$ 6,254	$ 31,845	$ 26,694
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Costs and expenses:
Manufacturing cost of sales	$ 5,580	$ 5,688	$ 4,412	$ 4,819	$ 4,520	$ 4,636	$ 3,945	$ 4,257	$ 20,499	$ 17,358
Engineering, selling and administrative	2,265	2,099	2,049	2,058	2,142	1,716	1,669	1,695	8,471	7,222
OPERATING INCOME	828	630	603	814	198	821	793	302	2,875	2,114
Other Expense:
Interest expense, net	(5)	(1)	(2)	(3)	(3)	(3)	(3)	(3)	(11)	(12)
Other (expense) income, net	(228)	(15)	(9)	(17)	(10)	(18)	(7)	46	(269)	11
Total other expense, net	(233)	(16)	(11)	(20)	(13)	(21)	(10)	43	(280)	(1)
INCOME BEFORE INCOME TAXES	595	614	592	794	185	800	783	345	2,595	2,113
Income tax provision	405	111	106	175	159	162	146	64	797	531
NET INCOME	$ 190	$ 503	$ 486	$ 619	$ 26	$ 638	$ 637	$ 281	$ 1,798	$ 1,582
Net Income per Basic Share	$ 0.07	$ 0.19	$ 0.18	$ 0.23	$ 0.01	$ 0.24	$ 0.24	$ 0.10	$ 0.67	$ 0.59
Net income per Dilutive Share	$ 0.05	$ 0.19	$ 0.18	$ 0.23	$ 0.01	$ 0.24	$ 0.24	$ 0.10	$ 0.67	$ 0.59