CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 95,355	$ (15,558)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	99,204	69,635
Amortization of deferred financing costs, discount and debt premium	3,753	5,041
Loss on early retirement of debt	162	37,347
Stock compensation expense	9,645	4,454
Impairment charges	13,602
Provision (benefit) for deferred income taxes	28,345	(25,560)
Other	1,626	789
Change in operating assets and liabilities:
Sale of trading securities	573	272
Accounts receivable	(441)	(6,937)
Inventory	380	17
Prepaid expenses and other assets	649	2,054
Interest payable	(6,563)	(1,441)
Income taxes payable	4,398	(1,268)
Accounts payable and accrued liabilities	12,760	2,786
Net cash provided by operating activities	263,448	71,631
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment, net	(89,082)	(52,930)
Proceeds from sale of property and equipment	920
Net cash used in business combinations	(306,274)	(1,313,052)
Investment in and loans to unconsolidated affiliate	(698)
Net cash used in investing activities	(395,134)	(1,365,982)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of Term Loan		1,450,000
Borrowings under Revolving Credit Facility	215,358	207,953
Payments under Revolving Credit Facility	(35,358)	(236,953)
Debt premium proceeds		27,500
Debt issuance costs	(5,401)	(51,338)
Taxes paid related to net share settlement of equity awards	(10,601)	(10,927)
Proceeds from exercise of stock options	154	2,900
Payments on other long-term payables	(501)	(370)
Net cash provided by (used in)financing activities	763,651	1,397,015
Increase in cash, cash equivalents and restricted cash	631,965	102,664
Cash, cash equivalents and restricted cash, beginning of period	147,749	63,444
Cash, cash equivalents and restricted cash, end of period	779,714	166,108
RECONCILIATION OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH TO AMOUNTS REPORTED WITHIN THE CONDENSED CONSOLIDATED BALANCE SHEETS:
Cash and cash equivalents	164,086	134,903
Restricted cash	1,622	21,308
Restricted and escrow cash included in other noncurrent assets	614,006	9,897
Cash, cash equivalents and restricted cash, end of period	779,714	166,108
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Interest paid	(86,964)	(67,840)
Income taxes refunded (paid)	3,953	(714)
NON-CASH FINANCING ACTIVITIES:
Net change in payables for capital expenditures	(5,914)	2,286
6% Senior Notes due 2025
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of Senior Notes		875,000
6% Senior Notes due 2026
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of Senior Notes	$ 600,000
Term Loan
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of Term Loan		1,450,000
Payments under Term Loan		$ (866,750)