CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash Flows from Operating Activities
Net income (loss)	$ (586,627)	$ (136,036)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Loss on extinguishment of debt, net	669	375
Depreciation and amortization, net	374,850	398,292
Goodwill and asset impairment	390,816	26,638
Equity in loss (earnings) of unconsolidated ventures	10,311	(478)
Distributions from unconsolidated ventures from cumulative share of net earnings	1,365	6,400
Amortization of deferred gain	(3,277)	(3,279)
Amortization of entrance fees	(2,457)	(3,111)
Proceeds from deferred entrance fee revenue	4,519	11,327
Deferred income tax provision	48,669	3,804
Change in deferred lease liability	(9,204)	2,553
Change in fair value of derivatives	159	28
Loss (gain) on sale of assets, net	1,383	(2,126)
Loss on facility lease termination	11,306	0
Non-cash stock-based compensation	22,547	27,218
Non-cash interest expense on financing lease obligations	13,960	19,728
Amortization of (above) below market lease, net	(5,091)	(5,165)
Other	(4,699)	(6,360)
Changes in operating assets and liabilities:
Accounts receivable, net	10,765	8,183
Prepaid expenses and other assets, net	23,323	(7,338)
Accounts payable and accrued expenses	(21,459)	(73,892)
Tenant refundable fees and security deposits	(232)	(693)
Deferred revenue	1,513	11,213
Net cash provided by operating activities	283,109	277,281
Cash Flows from Investing Activities
Change in lease security deposits and lease acquisition deposits, net	(411)	(1,776)
Change in cash and escrow deposits — restricted	(6,340)	(1,810)
Purchase of marketable securities	(246,376)	0
Additions to property, plant and equipment and leasehold intangibles, net	(140,044)	(263,950)
Acquisition of assets, net of related payables and cash received	(400)	(12,157)
Investment in unconsolidated ventures	(187,600)	(6,071)
Distributions received from unconsolidated ventures	11,491	4,836
Proceeds from sale of assets, net	34,570	219,471
Property insurance proceeds	4,430	6,360
Other	962	723
Net cash used in investing activities	(529,718)	(54,374)
Cash Flows from Financing Activities
Proceeds from debt	1,293,047	202,132
Repayment of debt and capital and financing lease obligations	(958,703)	(217,696)
Proceeds from line of credit	100,000	1,276,500
Repayment of line of credit	(100,000)	(1,486,500)
Payment of financing costs, net of related payables	(5,705)	(1,414)
Proceeds from refundable entrance fees, net of refunds	(2,241)	(907)
Payment on lease termination	(552)	(9,250)
Payments of employee taxes for withheld shares	(5,666)	(1,435)
Other	1,586	1,818
Net cash provided by (used in) financing activities	321,766	(236,752)
Net increase (decrease) in cash and cash equivalents	75,157	(13,845)
Cash and cash equivalents at beginning of period	216,397	88,029
Cash and cash equivalents at end of period	$ 291,554	$ 74,184