Restatement of Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating activities:
Other liabilities	$ 1,698	$ 74,038	$ 31,672
Net cash provided by operating activities	551,321	506,463	425,240
Investing activities:
Purchase of property and equipment	(334,537)	(606,971)	(628,881)
Net cash used in investing activities	(456,929)	$ (783,708)	$ (792,003)
As Reported
Operating activities:
Other liabilities	(140,402)
Net cash provided by operating activities	409,221
Investing activities:
Purchase of property and equipment	(192,437)
Net cash used in investing activities	(314,829)
Adjustments
Operating activities:
Other liabilities	142,100
Net cash provided by operating activities	142,100
Investing activities:
Purchase of property and equipment	(142,100)
Net cash used in investing activities	$ (142,100)