Revenue Disaggregation - Schedule of Disaggregated Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 8,723	$ 7,244
Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	5,087	3,511
Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	3,636	3,733
RF/microwave filters
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,247	1,511
Detector logarithmic video amplifiers
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	545	0
Power supply units and systems
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,694	2,479
Healthcare diagnostic systems
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,193	0
Defense systems
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	3,044	3,254
North America
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,328	1,511
Europe
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,832	2,179
Middle East and other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 3,563	$ 3,554