CONDENSED 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)	$ (659,883)	$ (586,627)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Debt modification and extinguishment costs	77	11,883
Depreciation and amortization, net	348,464	374,850
Goodwill and asset impairment	451,966	390,816
Equity in loss of unconsolidated ventures	6,907	10,311
Distributions from unconsolidated ventures from cumulative share of net earnings	2,159	1,365
Amortization of deferred gain	(3,269)	(3,277)
Amortization of entrance fees	(1,220)	(2,457)
Proceeds from deferred entrance fee revenue	2,507	4,519
Deferred income tax (benefit) provision	(19,180)	48,669
Straight-line lease (income) expense	(10,410)	(9,204)
Change in fair value of derivatives	153	159
(Gain) loss on sale of assets, net	(76,586)	1,383
Loss on facility lease termination and modification, net	135,760	11,306
Non-cash stock-based compensation expense	20,710	22,547
Non-cash interest expense on financing lease obligations	9,151	13,960
Amortization of (above) below market lease, net	(4,246)	(5,091)
Non-cash management contract termination fee	(5,649)	0
Other	(154)	(4,699)
Changes in operating assets and liabilities:
Accounts receivable, net	(1,127)	10,765
Prepaid expenses and other assets, net	21,874	23,323
Trade accounts payable and accrued expenses	(43,257)	(21,459)
Tenant refundable fees and security deposits	(341)	(232)
Deferred revenue	(3,898)	1,513
Net cash provided by operating activities	170,508	294,323
Cash Flows from Investing Activities
Change in lease security deposits and lease acquisition deposits, net	(664)	(411)
Sale (purchase) of marketable securities, net	293,273	(246,376)
Additions to property, plant and equipment and leasehold intangibles, net	(169,349)	(140,044)
Acquisition of assets, net of related payables and cash received	(271,771)	(400)
Investment in unconsolidated ventures	(8,946)	(187,600)
Distributions received from unconsolidated ventures	10,782	11,491
Proceeds from sale of assets, net	131,912	34,570
Property insurance proceeds	156	4,430
Other	1,580	962
Net cash used in investing activities	(13,027)	(523,378)
Cash Flows from Financing Activities
Proceeds from debt	279,919	1,293,047
Repayment of debt and capital and financing lease obligations	(501,946)	(958,703)
Proceeds from line of credit	200,000	100,000
Repayment of line of credit	(200,000)	(100,000)
Payment of financing costs, net of related payables	(3,341)	(16,919)
Proceeds from refundable entrance fees, net of refunds	(316)	(2,241)
Payments for lease termination	(12,548)	(552)
Payments of employee taxes for withheld shares	(2,844)	(5,666)
Other	1,147	1,586
Net cash (used in) provided by financing activities	(239,929)	310,552
Net (decrease) increase in cash, cash equivalents and restricted cash	(82,448)	81,497
Cash, cash equivalents and restricted cash at beginning of period	282,546	277,322
Cash, cash equivalents and restricted cash at end of period	$ 200,098	$ 358,819