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Long-Term Debt and Other Long-Term Liabilities - Additional Information (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Long-term debt
Other long-term liabilities		$ 165,592	$ 59,014
Amortization of deferred financing costs, discount and debt premium		7,600	5,600	$ 6,300
Loss on early retirement of debt, net		$ (7,512)	(162)	(38,430)
6% Senior Notes Due 2025
Long-term debt
Loss on early retirement of debt, net	$ (11,100)			(38,400)
Credit Facility
Long-term debt
Loss on early retirement of debt, net				$ (27,300)
Other Long Term Liabilities
Long-term debt
Long-term accrued rent			$ 28,300