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Credit Losses - Accounts Receivable (Narrative) (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Jun. 30, 2021
Dec. 31, 2020
Accounts Receivable, Noncurrent, Past Due [Line Items]        
Percentage of receivables, current 90.00% 90.00%    
Accounts receivable, net $ 127,700 $ 171,500    
Allowance for doubtful accounts, current $ 3,052 $ 3,374 $ 7,667 $ 7,056
Past due less than 60 days        
Accounts Receivable, Noncurrent, Past Due [Line Items]        
Percentage of receivables, past due 6.00% 2.00%    
Past due less than 120 days        
Accounts Receivable, Noncurrent, Past Due [Line Items]        
Percentage of receivables, past due 8.00% 3.00%