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Debt - Summary of Balances for Long-term Debt and Finance Lease Obligations (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Debt Disclosure [Abstract]    
Revolving credit facility $ 526,141 $ 513,180
Finance lease obligations 19,374 20,007
Total debt and finance lease obligations 545,515 533,187
Current portion 2,677 2,631
Noncurrent portion 542,838 530,556
Deferred financing costs, net 2,997 3,257
Noncurrent portion, net of deferred financing costs $ 539,841 $ 527,299