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Accounts And Other Receivables (Schedule Of Reconciliation Of The Beginning And Ending Balances Of The Allowance For Doubtful Accounts And Sales Returns) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Customer receivables $ 87,541 $ 105,048  
Allowance For Doubtful Accounts      
Allowance for Doubtful Accounts Receivable [Roll Forward]      
Balance, beginning of year 1,736 2,797 $ 1,904
Charges to expense 1,926 1,440 1,901
Recoveries (2) (35) (90)
Write-offs and settlements (639) (1,246) (709)
Foreign exchange and other (28) (1,290) (209)
Balance, end of year $ 2,997 $ 1,736 $ 2,797