Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2018
Loss Contingencies [Line Items]
Equipment purchases commitments			$ 17,300
Consumer Night Vision, accrued invoices					$ 1,000
Other income (expense)	$ 351	$ 192	447	$ 227
Reclassification, Other [Member]
Loss Contingencies [Line Items]
Consumer Night Vision, accrued invoices		(1,000)		$ (1,000)
Prepayment, writeoff		300
Other income (expense)		$ 100
Government Award [Member]
Loss Contingencies [Line Items]
Equipment purchases commitments			$ 16,400