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Risks and Contingencies (Narrative) (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 USD ($) Customer | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Mar. 31, 2022 USD ($)
Loss Contingencies [Line Items] |  |  |  |
Reserve for probable and estimated liabilities | $ 756 |  |  |
Commercial Dispute [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of customers involved in litigation | Customer | 1 |  |  |
Amount awarded in litigation |  |  | $ 7,500 |
Cash paid in litigation settlement | $ 2,000 | $ 1,000 |  |
Litigation settlement payable |  |  |  | $ 1,000

X
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