CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 224,709	$ 18,011
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	21,740	41,237
Net amortization of debt discounts, premiums and deferred financing fees	1,446	1,562
Straight line rental income	(2,550)	(8,930)
Amortization of acquired real estate leases	1,562	4,955
Other amortization	3,505	5,607
Share-based compensation	10,480	10,732
Loss on asset impairment	12,087	19,714
Loss on marketable securities	4,987	0
Loss on early extinguishment of debt	6,403	63
Net gain on sale of properties	(232,148)	(19,590)
Change in assets and liabilities:
Rents receivable and other assets	(16,856)	(19,902)
Accounts payable, accrued expenses and other	(8,514)	(10,469)
Rent collected in advance	(2,971)	1,166
Cash provided by operating activities	23,880	44,156
CASH FLOWS FROM INVESTING ACTIVITIES:
Real estate improvements	(32,203)	(37,985)
Insurance proceeds received	1,443	4,000
Proceeds from sale of properties, net	807,322	185,300
Purchase of marketable securities	0	(276,238)
Proceeds from sale of marketable securities	23,933	0
Cash provided by (used in) investing activities	800,495	(124,923)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase and retirement of common shares	(89,910)	(209)
Payments on borrowings	(575,526)	(42,124)
Contributions from holders of noncontrolling interest	1	31
Distributions to preferred shareholders	(3,994)	(3,994)
Cash used in financing activities	(669,429)	(46,296)
Increase (decrease) in cash, cash equivalents, and restricted cash	154,946	(127,063)
Cash, cash equivalents, and restricted cash at beginning of period	2,360,590	2,101,206
Cash, cash equivalents, and restricted cash at end of period	2,515,536	1,974,143
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid	17,704	28,416
Taxes paid, net	2,417	729
NON-CASH INVESTING ACTIVITIES:
Decrease in accrued capital expenditures	(2,629)	(2,456)
Total cash, cash equivalents, and restricted cash shown in the statements of cash flows	$ 2,360,590	$ 2,101,206

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The net change during the reporting period in rent receivables and other operating assets which is not otherwise defined in the taxonomy.

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This element represents the amortization of deferred leasing fees incurred by the lessor and amortized over the term of the lease. Such fees represent (a) costs to originate a lease incurred in transactions with independent third parties that (i) result directly from and are essential to acquire that lease and (ii) would not have been incurred had that leasing transaction not occurred and (b) certain costs directly related to specified activities performed by the lessor for that lease. Those activities are: evaluating the prospective lessee's financial condition; evaluating and recording guarantees, collateral, and other security arrangements; negotiating lease terms; preparing and processing lease documents; and closing the transaction.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Change during the period in carrying value for all deferred liabilities due within one year or operating cycle.

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