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Leases (Supplemental Cash Flow Information) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Leases [Abstract]    
Operating cash flows from operating leases $ 8,099 $ 7,411
Right-of-use assets obtained in exchange for operating lease obligations $ 920 $ 1,790