Revenue Recognition (Schedule of Disaggregated Revenue) (Details) - USD ($)
$ in Thousands |
12 Months Ended |
Dec. 31, 2021 |
Dec. 31, 2020 |
| Disaggregation of Revenue [Line Items] |
|
|
| Revenues from contract with customer |
$ 26,046
|
$ 29,424
|
| Military [Member] |
|
|
| Disaggregation of Revenue [Line Items] |
|
|
| Revenues from contract with customer |
17,320
|
21,373
|
| Commercial, including Industrial and Medical [Member] |
|
|
| Disaggregation of Revenue [Line Items] |
|
|
| Revenues from contract with customer |
2,775
|
1,607
|
| Consumer [Member] |
|
|
| Disaggregation of Revenue [Line Items] |
|
|
| Revenues from contract with customer |
1,796
|
3,383
|
| Multiple [Member] |
|
|
| Disaggregation of Revenue [Line Items] |
|
|
| Revenues from contract with customer |
4,155
|
3,061
|
| North and South America [Member] |
|
|
| Disaggregation of Revenue [Line Items] |
|
|
| Revenues from contract with customer |
16,148
|
16,434
|
| Europe, Middle East, and Africa [Member] |
|
|
| Disaggregation of Revenue [Line Items] |
|
|
| Revenues from contract with customer |
8,180
|
9,834
|
| Asia Pacific [Member] |
|
|
| Disaggregation of Revenue [Line Items] |
|
|
| Revenues from contract with customer |
$ 1,718
|
$ 3,156
|