Domestic and Foreign Revenues - Significant Foreign Revenues from Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Entity Wide Revenue Major Customer [Line Items]
Revenues from operations	$ 8,761	$ 7,501	$ 24,303	$ 20,919
Malaysia [Member]
Entity Wide Revenue Major Customer [Line Items]
Revenues from operations	1,332	832	3,856	1,874
Hong Kong [Member]
Entity Wide Revenue Major Customer [Line Items]
Revenues from operations	103	140	479	495
Germany [Member]
Entity Wide Revenue Major Customer [Line Items]
Revenues from operations	106	127	348	413
Hungary [Member]
Entity Wide Revenue Major Customer [Line Items]
Revenues from operations	236	1	247	7
All other foreign countries [Member]
Entity Wide Revenue Major Customer [Line Items]
Revenues from operations	499	403	1,673	1,459
Foreign [Member]
Entity Wide Revenue Major Customer [Line Items]
Revenues from operations	2,276	1,503	6,603	4,248
Domestic [Member]
Entity Wide Revenue Major Customer [Line Items]
Revenues from operations	$ 6,485	$ 5,998	$ 17,700	$ 16,671