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Long-Term Debt, Borrowings and Payments under Bank Credit Facilities (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Proceeds from (Repayments of) Debt [Abstract]    
Borrowings (Payments) on bank credit facilities $ 31,155 $ 2,272
Revolving Credit Facility [Member]    
Proceeds from (Repayments of) Debt [Abstract]    
Borrowings on bank credit facilities 220,591 120,634
Payments on bank credit facilities (189,436) (118,362)
Borrowings (Payments) on bank credit facilities $ 31,155 $ 2,272