CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash Flows from Operating Activities
Net income (loss)	$ (172,698)	$ (84,308)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Loss on extinguishment of debt, net	96	139
Depreciation and amortization, net	253,657	265,129
Asset impairment	22,265	7,527
Equity in earnings of unconsolidated ventures	3,589	(1,356)
Distributions from unconsolidated ventures from cumulative share of net earnings	892	0
Amortization of deferred gain	(2,186)	(2,186)
Amortization of entrance fees	(2,030)	(1,939)
Proceeds from deferred entrance fee revenue	3,952	7,458
Deferred income tax provision	80,373	332
Change in deferred lease liability	(6,126)	3,412
Change in fair value of derivatives	85	28
Loss (gain) on sale of assets, net	1,150	(2,551)
Loss on facility lease termination	6,368	0
Non-cash stock-based compensation	15,020	18,763
Non-cash interest expense on financing lease obligations	10,021	13,014
Amortization of (above) below market lease, net	(3,394)	(3,466)
Other	(2,969)	(3,597)
Changes in operating assets and liabilities:
Accounts receivable, net	11,957	5,439
Prepaid expenses and other assets, net	18,979	(16,845)
Accounts payable and accrued expenses	(47,982)	(23,133)
Tenant refundable fees and security deposits	(215)	38
Deferred revenue	9,070	(4,059)
Net cash provided by operating activities	199,874	177,839
Cash Flows from Investing Activities
Change in lease security deposits and lease acquisition deposits, net	5	(1,538)
Change in cash and escrow deposits — restricted	(1,721)	355
Purchase of marketable securities	(29,779)	0
Additions to property, plant and equipment and leasehold intangibles, net	(89,570)	(190,060)
Acquisition of assets, net of related payables and cash received	(400)	(12,157)
Investment in unconsolidated ventures	(186,166)	(3,733)
Distributions received from unconsolidated ventures	8,045	3,602
Proceeds from sale of assets, net	34,455	45,584
Property insurance proceeds	2,969	3,597
Other	947	(2,386)
Net cash used in investing activities	(261,215)	(156,736)
Cash Flows from Financing Activities
Proceeds from debt	92,571	192,128
Repayment of debt and capital and financing lease obligations	(89,204)	(128,427)
Proceeds from line of credit	0	894,500
Repayment of line of credit	0	(1,018,000)
Payment of financing costs, net of related payables	(523)	(641)
Proceeds from refundable entrance fees, net of refunds	(1,554)	(599)
Payment on lease termination	(552)	(9,250)
Payments of employee taxes for withheld shares	(5,320)	(968)
Other	1,054	1,178
Net cash used in financing activities	(3,528)	(70,079)
Net decrease in cash and cash equivalents	(64,869)	(48,976)
Cash and cash equivalents at beginning of period	216,397	88,029
Cash and cash equivalents at end of period	$ 151,528	$ 39,053