Revenue Recognition (Schedule of Disaggregated Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Revenues from contract with customer	$ 7,700	$ 5,361	$ 14,431	$ 11,473
Military [Member]
Disaggregation of Revenue [Line Items]
Revenues from contract with customer	4,952	3,199	9,751	7,646
Commercial, including Industrial and Medical [Member]
Disaggregation of Revenue [Line Items]
Revenues from contract with customer	409	776	722	1,112
Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues from contract with customer	1,335	324	2,023	746
Multiple [Member]
Disaggregation of Revenue [Line Items]
Revenues from contract with customer	1,004	1,062	1,935	1,969
North and South America [Member]
Disaggregation of Revenue [Line Items]
Revenues from contract with customer	4,177	2,855	7,717	6,253
Europe, Middle East, and Africa [Member]
Disaggregation of Revenue [Line Items]
Revenues from contract with customer	2,221	2,152	4,922	4,479
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Revenues from contract with customer	$ 1,302	$ 354	$ 1,792	$ 741