Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating activities:
Net income (loss)	$ (27,705)	$ (21,539)
Adjustments to reconcile net income (loss) to cash flow from operating activities:
Provision for loan losses	8,032	1,535
Share-based compensation expense	(539)	344
Depreciation and amortization expense	3,443	9,754
Amortization of deferred financing costs and debt discounts	3,046	4,018
Deferral of loan origination fees and costs, net	(383)	272
Amortization of above/below market leases	(146)	(327)
(Gains) Losses on assets	937	(12,006)
(Gains) Losses on extinguishments of debt	991	(3,186)
Losses on deconsolidation of properties		15,947
Asset impairment	9,191	7,424
Change in fair value of financial instruments	(87)	1,153
Changes in assets and liabilities:
Decrease in accrued interest receivable	317	97
Decrease (increase) in other assets	1,054	1,912
Increase in accrued interest payable	984	2,202
(Decrease) increase in accounts payable and accrued expenses	(1,427)	(5,210)
(Decrease) increase in other liabilities	(22)	(492)
Proceeds from sale of loans	89,583
Cash flows provided by (used in) operating activities	87,269	1,898
Investing activities:
Origination of loans for investment	(50,492)	(115,000)
Principal repayments on loans	136,664	90,238
Investments in real estate	(828)	(2,002)
Proceeds from the disposition of real estate	16,607	70,929
(Increase) decrease in borrowers' escrows	(25,487)	(5,378)
Cash flows provided by (used in) investing activities	76,464	38,787
Financing activities:
Repayments on secured credit facilities and loans payable on real estate	(332)	(402)
Repayments and repurchase of CDO notes payable and floating rate securitizations	(90,796)	(170,123)
Repurchase of convertible notes and senior notes	(5,722)
Repayments of senior secured notes	(2,000)	(32,000)
Net proceeds (repayments) related to floating rate loan repurchase agreements	(22,313)	102,896
Proceeds from issuance of other indebtedness		17,022
Distribution to noncontrolling interests		(20)
Acquisition of noncontrolling interests	(343)
Issuance of noncontrolling interests	76	66
Payments for deferred costs		(91)
Common share issuance, net of costs incurred	(71)	(894)
Repurchase of Series D preferred shares	(4,863)
Distributions paid to preferred shareholders	(11,113)	(11,326)
Distributions paid to common shareholders	(105)	(8,481)
Cash flows (used in) provided by financing activities	(137,582)	(103,353)
Net change in cash, cash equivalents, and restricted cash	26,151	(62,668)
Cash, cash equivalents, and restricted cash at the beginning of the period	211,294	300,710
Cash, cash equivalents, and restricted cash at the end of the period	$ 237,445	$ 238,042