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Schedule of Changes in Allowance for Doubtful Accounts Receivable (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Operating revenues:    
Balance at beginning of period $ 577  
Provisions for credit losses 914 $ 414
Deductions and write-offs, net of foreign currency adjustment (810)  
Balance at end of period $ 681