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Summary of Significant Accounting Policies (Schedule Of Account Receivables) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]        
Accounts receivable $ 94,908 $ 94,528    
Allowance for credit losses (12,358) (7,007) $ (3,956) $ (7,574)
Total $ 82,550 $ 87,521