Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (109,945)	$ 55,424
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	66,796	76,571
Asset impairments	4,174	12,253
Amortization of debt issuance costs and other non-cash interest	3,520	2,740
Expenses associated with debt repayments and refinancing transactions	52,167
Gain on sale of real estate assets, net	(38,766)	(2,818)
Deferred income taxes	97,436	1,583
Non-cash revenue and other income	788	(5,544)
Non-cash equity compensation	8,542	8,929
Other expenses and non-cash items	3,077	7,546
Changes in assets and liabilities, net:
Accounts receivable, prepaid expenses and other assets	(20,318)	29,529
Accounts payable, accrued expenses and other liabilities	14,855	(11,939)
Net cash provided by operating activities	82,326	174,274
CASH FLOWS FROM INVESTING ACTIVITIES:
Expenditures for facility development and expansions	(8,669)	(23,506)
Expenditures for other capital improvements	(24,710)	(18,512)
Acquisitions, net of cash acquired		(8,849)
Net proceeds from sale of assets	320,653	5,026
Increase in other assets	(702)	(4,977)
Net cash provided by (used in) investing activities	286,572	(50,818)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of debt and borrowings from credit facility	510,500	374,000
Scheduled principal repayments	(19,521)	(15,124)
Principal repayments of credit facility	(172,000)	(108,000)
Repayment of non-recourse mortgage notes	(161,930)
Repayment of senior notes	(425,988)
Payment of debt defeasance, issuance and other refinancing and related costs	(60,449)	(891)
Payment of lease obligations for financing leases	(276)	(271)
Contingent consideration for acquisition of business	(1,000)
Dividends paid	(1,613)	(105,963)
Purchase and retirement of common stock	(1,634)	(3,560)
Net cash provided by (used in) financing activities	(333,911)	140,191
NET INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	34,987	263,647
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of period	136,768	119,093
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period	171,755	382,740
NON-CASH INVESTING AND FINANCING ACTIVITIES
Debt assumed on acquisition of property portfolio		52,217
Establishment of right of use assets and lease liabilities	322	62
Cash paid during the period for:
Interest (net of amounts capitalized of $0.1 million and $0.5 million in 2021 and 2020, respectively)	38,893	45,020
Income taxes paid	$ 13,871	$ 1,156