Leases - Restated (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Total assets	$ 1,541,507	$ 1,541,507	$ 1,742,433	$ 1,639,782
Total current liabilities	401,313	401,313	458,026	432,722
Total long-term liabilities	$ 1,914,818	$ 1,914,818	1,900,491	$ 1,820,788
ASU 2016-02
Lessee, Lease, Description [Line Items]
ASU adoption, prior periods not restated	true	true
ASU 2016-02 | Adjustment
Lessee, Lease, Description [Line Items]
Total assets			102,651
Total current liabilities			25,304
Total long-term liabilities			$ 79,703