Enterprise-Wide Information - Property, Plant and Equipment, Net of Accumulated Depreciation (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 10,277	$ 9,842
US
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	6,826	6,105
Korea
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	2,169	2,367
Japan
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	736	799
Canada
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	270	280
Germany
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	185	210
Other
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 91	$ 81