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Summary of Significant Accounting Policies Allowance for credit losses (Details) - March 31, 2022 - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Beginning balance $ 3,743 $ 5,246
Provision for credit loss expense 1,548 1,088
Write-offs 234 3,113
Recoveries 103 522
Total ending allowance balance $ 5,160 $ 3,743