CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income (loss)	$ 46,789	$ (104,581)	$ (375,584)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Equity in (earnings) losses of unconsolidated ventures	(25)	131,115	135,173
Depreciation and amortization	34,099	36,399	59,766
Straight-line rental income	(1,649)	(2,601)	(3,899)
Amortization of above/below market lease values, net	(364)	(98)	(409)
Amortization of premium/accretion of discount and fees on investments and borrowings, net	(13,887)	(6,706)	(9,485)
Amortization of deferred financing costs	10,742	12,316	12,133
Amortization of right-of-use lease assets and operating lease liabilities	499	104	86
Paid-in-kind interest added to loan principal, net of interest received	3,907	(4,818)	1,446
Distributions of cumulative earnings from unconsolidated ventures	0	0	13,429
Unrealized (gain) loss on mortgage loans and obligations held in securitization trusts, net	(854)	(41,904)	50,521
Realized (gain) loss on mortgage loans and obligations held in securitization trusts, net	854	36,623	0
Realized loss on securities from write-down to fair value	0	990	32,606
Realized (gain) loss on sale of real estate securities, available for sale	0	(1,331)	42,153
Designated hedges and foreign currency translation reclassified to earnings	0	(30,497)	0
Realized gain on sale of real estate	(10,632)	(11,911)	(14,599)
Realized loss on sale of loans receivable	0	0	1,457
Increase (decrease) of current expected credit loss reserve	70,858	(1,432)	78,561
Impairment of operating real estate	0	0	42,814
Amortization of equity-based compensation	7,888	14,016	4,367
Mortgage notes above/below market value amortization	140	117	(666)
Realized gain on sales of unconsolidated ventures	(21,900)	(25,451)	0
Deferred income tax benefit	(2,047)	(85)	(172)
Other (gain) loss, net	3,587	(1,647)	23,524
Changes in assets and liabilities:
Receivables, net	(3,069)	(1,202)	13,243
Deferred costs and other assets	5,151	(3,721)	12,935
Due to related party	0	(10,059)	(957)
Other liabilities	(4,810)	(4,906)	(22,087)
Net cash provided by (used in) operating activities	125,277	(21,270)	96,356
Cash flows from investing activities:
Acquisition, origination and funding of loans held for investment, net	(972,113)	(1,758,090)	(296,981)
Repayment on loans held for investment	909,820	485,411	434,677
Repayment on loans held for sale	0	0	137,132
Proceeds from sale of real estate	55,600	332,003	454,589
Acquisition of and additions to real estate, related intangibles and leasing commissions	(3,965)	(9,923)	(23,210)
Investments in unconsolidated ventures	0	(11,953)	(48,934)
Proceeds from sale of investments in unconsolidated ventures	38,100	198,353	108,367
Distributions in excess of cumulative earnings from unconsolidated ventures	1,370	47,587	25,221
Repayment of real estate securities, available for sale, from sales	0	10,223	149,629
Repayment of real estate securities, available for sale, from cost recovery	0	310	3,579
Repayment of principal in mortgage loans held in securitization trusts	18,660	78,907	76,719
Proceeds from sale of beneficial interests of securitization trusts	36,154	28,662	0
Net receipts on settlement of derivative instruments	0	6,351	19,637
Change in escrow deposits	5,711	36,370	(37,683)
Net cash provided by (used in) investing activities	89,337	(555,789)	1,002,742
Cash flows from financing activities:
Distributions paid on common stock	(99,391)	(51,916)	(51,707)
Distributions paid on common stock to noncontrolling interests	(1,138)	(1,221)	(922)
Shares canceled for tax withholding on vested stock awards	(1,255)	(2,613)	(1,743)
Repurchase of common stock	(18,320)	0	0
Redemption of OP units	(25,383)	0	0
Borrowings from mortgage notes	0	7,196	18,618
Repayment of mortgage notes	(85,193)	(266,596)	(240,081)
Borrowings from credit facilities	771,478	1,325,237	298,583
Repayment of credit facilities	(336,785)	(955,292)	(862,592)
Borrowing from securitization bonds	0	670,000	0
Repayment of securitization bonds	(337,707)	0	0
Repayment of mortgage obligations issued by securitization trusts	(18,660)	(78,907)	(76,719)
Payment of deferred financing costs	(8,892)	(11,832)	(6,741)
Contributions from noncontrolling interests	0	5,845	200,494
Distributions to noncontrolling interests	(204)	(255,545)	(31,252)
Forfeiture of stock awards	(1)	0	0
Net cash provided by (used in) financing activities	(161,451)	384,356	(754,062)
Effect of exchange rates on cash, cash equivalents and restricted cash	(898)	(764)	(690)
Net increase (decrease) in cash, cash equivalents and restricted cash	52,265	(193,467)	344,346
Cash, cash equivalents and restricted cash - beginning of period	346,563	540,030	195,684
Cash, cash equivalents and restricted cash - end of period	398,828	346,563	540,030
Reconciliation of cash, cash equivalents, and restricted cash to consolidated balance sheets
Cash and cash equivalents	306,320	259,722	474,817
Restricted cash	92,508	86,841	65,213
Total cash, cash equivalents and restricted cash	398,828	346,563	540,030
Supplemental disclosure of non-cash investing and financing activities:
Cash paid for interest	126,151	76,262	111,688
Cash paid (received) for income taxes, net	595	4,827	(5,961)
Deconsolidation of securitization trust (VIE asset/liability reductions)	(649,377)	(802,196)	0
Deconsolidation of interest in joint ventures	0	0	(5,145)
Accrual of distribution payable	25,777	23,912	(13,164)
Right-of-use lease assets and operating lease liabilities	$ 3,271	$ 5,435	$ (1,393)