Income Taxes, Uncertain Tax Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Federal [Member]
Tax [Roll Forward]
Beginning balance	$ 793	$ 793
Increases	0	0
Decreases	(793)	0
Ending balance	0	793
Interest and Penalties [Roll Forward]
Beginning balance	9	6
Increases	3	3
Decreases	(12)	0
Ending balance	0	9
Foreign [Member]
Uncertain Tax Liabilities, Total [Roll Forward]
Beginning balance	2,440	2,188
Increases	129	366
Decreases	(867)	(114)
Ending balance	1,702	2,440
Foreign [Member] | China [Member]
Tax [Roll Forward]
Beginning balance	214	201
Increases	6	13
Decreases	0	0
Ending balance	220	214
Interest and Penalties [Roll Forward]
Beginning balance	378	318
Increases	50	60
Decreases	0	0
Ending balance	428	378
Foreign [Member] | Ukraine [Member]
Tax [Roll Forward]
Beginning balance	14	78
Increases	0	0
Decreases	(14)	(64)
Ending balance	0	14
Interest and Penalties [Roll Forward]
Beginning balance	10	60
Increases	0	0
Decreases	(10)	(50)
Ending balance	0	10
Foreign [Member] | South Korea [Member]
Tax [Roll Forward]
Beginning balance	682	554
Increases	0	128
Decreases	(38)	0
Ending balance	644	682
Interest and Penalties [Roll Forward]
Beginning balance	274	178
Increases	61	96
Decreases	0	0
Ending balance	335	274
Foreign [Member] | U.K. [Member]
Tax [Roll Forward]
Beginning balance	45	0
Increases	0	45
Decreases	0	0
Ending balance	45	45
Interest and Penalties [Roll Forward]
Beginning balance	21	0
Increases	9	21
Decreases	0	0
Ending balance	$ 30	$ 21