CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Assets [Abstract]
Property and equipment, net of accumulated depreciation	$ 3,134,206	$ 3,149,095
Cash and cash equivalents - unrestricted	103,842	103,437
Cash and cash equivalents - restricted	65,252	45,652
Trade receivables, less allowance	90,532	67,923
Prepaid expenses and other assets	85,310	78,240
Intangible assets	227,128	246,770
Debt and capital lease obligations	2,494,103	2,441,895
Accounts payable and accrued liabilities	244,418	274,890
Accounts Receivable, Net [Abstract]
Allowance for doubtful accounts receivable	$ 753	$ 763
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	51,443,000	51,336,000
Common stock, shares outstanding (in shares)	51,443,000	51,336,000
Treasury Stock, Shares [Abstract]
Treasury stock, shares (in shares)	599,000	592,000
Variable Interest Entity [Member]
Assets [Abstract]
Property and equipment, net of accumulated depreciation	$ 997,000	$ 1,018,499
Cash and cash equivalents - unrestricted	32,455	11,648
Cash and cash equivalents - restricted	20,770	5
Trade receivables, less allowance	17,229	2,019
Prepaid expenses and other assets	19,780	20,419
Intangible assets	222,367	241,973
Debt and capital lease obligations	541,197	494,578
Accounts payable and accrued liabilities	$ 50,442	$ 70,215