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Operations and Summary of Significant Accounting Policies - CECL Rollforward (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2020
USD ($)
Accounting Policies [Abstract]  
Percentage of uncollectible accounts receivable 100.00%
Accounts Receivable, Allowance for Credit Loss [Roll Forward]  
Beginning balance $ 1,935
Accounts Receivable, Allowance for Credit Loss, Writeoff 273
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) (98)
Ending balance $ 2,110