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Additional Cash Flow Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Cash paid for:    
Interest $ 1,323 $ 3,030
Income taxes 4,385 4,265
Right-of-use assets obtained in exchange for new operating lease liabilities 9,868 7,652
Right-of-use assets obtained in exchange for new finance lease liabilities $ 676 $ 882