Acquisitions - Fair Value of Assets Acquired and Liabilities Assumed, Triton (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Nov. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Other current assets	$ 41,074	$ 28,899
Property and equipment	375,904	237,927
Goodwill	1,271,855	834,013		$ 755,949	$ 575,780
Accounts payable	29,153	26,919
Accrued expenses	46,624	43,486
Other current liabilities	43,678	25,339
Deferred income taxes	$ 19,833	$ 25,531
Triton Digital Canada, Inc.
Business Acquisition [Line Items]
Cash			$ 10,515
Accounts receivable			8,879
Other current assets			679
Property and equipment			705
Goodwill			80,656
Other intangible assets			75,000
Accounts payable			1,895
Accrued expenses			3,332
Other current liabilities			18
Deferred income taxes			10,976
Net purchase price			$ 160,213