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Debt - Summary of Total Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total debt	$ 1,268,555	$ 1,373,155
Debt issuance costs	(18,293)	(21,905)
Less: current portion of term loans	34,236	34,148
Less: current portion of debt issuance costs	(4,714)	(4,802)
Total long-term debt	1,234,319	1,339,007
Term Loans
Debt Instrument [Line Items]
Total debt	726,848	756,060
Less: current portion of term loans	38,950	38,950
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt	160,000	239,000
Senior Notes | 5.750% Senior Notes, due August 2026
Debt Instrument [Line Items]
Total debt	$ 400,000	$ 400,000

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