CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash Flows from Operating Activities
Net income (loss)	$ 126,084	$ (177,169)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Loss (gain) on debt modification and extinguishment, net	(11,107)	5,194
Depreciation and amortization, net	276,314	287,594
Asset impairment	96,729	6,254
Equity in (earnings) loss of unconsolidated ventures	863	3,574
Distributions from unconsolidated ventures from cumulative share of net earnings	766	2,388
Amortization of entrance fees	(1,606)	(1,172)
Proceeds from deferred entrance fee revenue	118	2,902
Deferred income tax (benefit) provision	(2,727)	(1,216)
Operating lease expense adjustment	(132,276)	(13,626)
Loss (gain) on sale of assets, net	(374,019)	(2,723)
Loss (gain) on facility lease termination and modification, net	0	2,006
Non-cash stock-based compensation expense	18,212	18,315
Non-cash management contract termination gain	0	(640)
Other	(1,965)	(7,173)
Changes in operating assets and liabilities:
Accounts receivable, net	19,678	(6,756)
Prepaid expenses and other assets, net	27,504	50,387
Prepaid insurance premiums financed with notes payable	(5,823)	(5,875)
Trade accounts payable and accrued expenses	17,002	(21,970)
Refundable fees and deferred revenue	64,763	(24,007)
Operating lease assets and liabilities for lessor capital expenditure reimbursements	13,640	12,043
Net cash provided by (used in) operating activities	132,150	128,330
Cash Flows from Investing Activities
Change in lease security deposits and lease acquisition deposits, net	3,399	(430)
Purchase of marketable securities	(255,373)	(137,786)
Sale and maturities of marketable securities	188,750	104,000
Capital expenditures, net of related payables	(140,690)	(206,385)
Acquisition of assets, net of related payables and cash received	(472,193)	(453)
Investment in unconsolidated ventures	(1,809)	(4,294)
Distributions received from unconsolidated ventures	0	7,454
Proceeds from sale of assets, net	331,103	53,430
Proceeds from notes receivable	2,849	34,109
Net cash provided by (used in) investing activities	(343,964)	(150,355)
Cash Flows from Financing Activities
Proceeds from debt	961,833	318,491
Repayment of debt and financing lease obligations	(518,700)	(404,152)
Proceeds from line of credit	166,381	0
Repayment of line of credit	(166,381)	0
Purchase of treasury stock, net of related payables	(18,123)	(18,401)
Payment of financing costs, net of related payables	(18,141)	(6,357)
Payments of employee taxes for withheld shares	(4,012)	(3,242)
Other	335	827
Net cash provided by (used in) financing activities	403,192	(112,834)
Net increase (decrease) in cash, cash equivalents, and restricted cash	191,378	(134,859)
Cash, cash equivalents, and restricted cash at beginning of period	301,697	450,218
Cash, cash equivalents, and restricted cash at end of period	$ 493,075	$ 315,359