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Lease Obligations - Summary of Other and Supplemental Cash Flow Information Related to Leases (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities    
Operating cash flows from operating leases $ 9,237 $ 7,337
Right-of-use asset obtained in exchange for new operating lease obligations $ 6,764 $ 13,301