Condensed Consolidating Balance Sheet (Unaudited) (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents	$ 56,745		$ 52,802
Restricted cash	30,150		21,335
Accounts receivable, net of allowance	272,423		270,597
Prepaid expenses and other current assets	32,791		28,791
Total current assets	392,109		373,525
Real estate and related assets:
Property and equipment, net	2,824,029		2,830,589
Other real estate assets	242,073		247,223
Goodwill	48,169		48,169
Non-current deferred tax assets	18,858		14,947
Other assets	213,653		141,207
Total assets	3,738,891		3,655,660
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued expenses	330,449		352,275
Current portion of long-term debt, net	341,152		14,121
Total current liabilities	671,601		366,396
Long-term debt, net	1,569,118		1,787,555
Deferred revenue	19,286		26,102
Other liabilities	96,295		60,548
Total liabilities	2,356,300		2,240,601
Total stockholders' equity	1,382,591	$ 1,382,414	1,415,059	$ 1,427,918	$ 1,434,210	$ 1,451,608
Total liabilities and stockholders' equity	3,738,891		3,655,660
Reportable Legal Entities | Parent
ASSETS
Cash and cash equivalents	21,732		11,109
Accounts receivable, net of allowance	194,790		254,766
Prepaid expenses and other current assets	3,434		4,412
Total current assets	219,956		270,287
Real estate and related assets:
Property and equipment, net	2,242,107		2,255,361
Other real estate assets	242,073		247,223
Goodwill	33,057		33,057
Non-current deferred tax assets	1,513		727
Other assets	563,909		507,161
Total assets	3,302,615		3,313,816
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued expenses	263,198		294,474
Current portion of long-term debt, net	335,719		8,720
Total current liabilities	598,917		303,194
Long-term debt, net	1,301,253		1,579,273
Non-current deferred tax liabilities	1,751		1,165
Other liabilities	18,103		15,125
Total liabilities	1,920,024		1,898,757
Total stockholders' equity	1,382,591		1,415,059
Total liabilities and stockholders' equity	3,302,615		3,313,816
Reportable Legal Entities | Combined Subsidiary Guarantors
ASSETS
Cash and cash equivalents	34,312		40,348
Restricted cash	4
Accounts receivable, net of allowance	505,880		445,105
Prepaid expenses and other current assets	33,337		26,939
Total current assets	573,533		512,392
Real estate and related assets:
Property and equipment, net	269,546		310,989
Goodwill	15,112		15,112
Non-current deferred tax assets	17,014		14,220
Other assets	133,838		61,104
Total assets	1,009,043		913,817
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued expenses	390,837		377,699
Current portion of long-term debt, net	47,905
Total current liabilities	438,742		377,699
Long-term debt, net	66,634		114,428
Deferred revenue	19,286		26,102
Other liabilities	78,192		45,423
Total liabilities	602,854		563,652
Total stockholders' equity	406,189		350,165
Total liabilities and stockholders' equity	1,009,043		913,817
Reportable Legal Entities | Non-Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	701		1,345
Restricted cash	30,146		21,335
Accounts receivable, net of allowance	(108)		1,809
Prepaid expenses and other current assets	167		1,951
Total current assets	30,906		26,440
Real estate and related assets:
Property and equipment, net	312,376		264,239
Non-current deferred tax assets	2,082		1,165
Other assets	36,858		38,112
Total assets	382,222		329,956
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued expenses	108,665		115,661
Current portion of long-term debt, net	5,528		5,401
Total current liabilities	114,193		121,062
Long-term debt, net	268,231		208,854
Total liabilities	382,424		329,916
Total stockholders' equity	(202)		40
Total liabilities and stockholders' equity	382,222		329,956
Consolidating Adjustments and Other
ASSETS
Accounts receivable, net of allowance	(428,139)		(431,083)
Prepaid expenses and other current assets	(4,147)		(4,511)
Total current assets	(432,286)		(435,594)
Real estate and related assets:
Non-current deferred tax assets	(1,751)		(1,165)
Other assets	(520,952)		(465,170)
Total assets	(954,989)		(901,929)
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued expenses	(432,251)		(435,559)
Current portion of long-term debt, net	(48,000)
Total current liabilities	(480,251)		(435,559)
Long-term debt, net	(67,000)		(115,000)
Non-current deferred tax liabilities	(1,751)		(1,165)
Total liabilities	(549,002)		(551,724)
Total stockholders' equity	(405,987)		(350,205)
Total liabilities and stockholders' equity	$ (954,989)		$ (901,929)