Revenue Recognition (Narrative) (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Revenue Recognition [Abstract] | ||
| Unbilled revenue, billed and collected, term | 1 year | |
| Accounts Receivable, after Allowance for Credit Loss, Current | $ 4,488 | $ 5,314 |
| Revenue recognized related to contract liabilities | 400 | 200 |
| Aggregate amount of the transaction price allocated to remaining performance obligations | $ 500 | $ 2,500 |