Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities
Net income (loss)	$ 80,540	$ (53,283)
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Non-cash compensation expense	8,085	8,678
Amortization of deferred fees on loans and debt securities	(14,212)	(14,399)
Amortization of deferred financing costs and premiums/ discount on debt obligations	9,162	9,229
(Decrease) increase in current expected credit loss reserve	(1,293)	122,702
Unrealized gain on assets denominated in foreign currencies, net	(9,325)	(679)
Unrealized loss on derivative financial instruments, net	3,755	705
Realized loss on derivative financial instruments, net	3,799	449
Changes in assets and liabilities, net
Other assets	(359)	(7,432)
Other liabilities	2,896	2,647
Net cash provided by operating activities	83,048	68,617
Cash flows from investing activities
Origination and fundings of loans receivable	(1,405,119)	(971,322)
Principal collections and sales proceeds from loans receivable and debt securities	862,204	620,994
Origination and exit fees received on loans receivable	17,475	8,610
Receipts under derivative financial instruments	7,287	85,432
Payments under derivative financial instruments	(56,488)	(23,780)
Collateral deposited under derivative agreements	(35,860)	(102,140)
Return of collateral deposited under derivative agreements	86,910	132,940
Net cash used in investing activities	(523,591)	(249,266)
Cash flows from financing activities
Borrowings under secured debt agreements	1,222,548	955,786
Repayments under secured debt agreements	(878,030)	(1,531,637)
Proceeds from issuance of collateralized loan obligations	0	1,243,125
Repayment of collateralized loan obligations	(48,853)	(179,759)
Borrowings under asset-specific debt agreements	38,734	30,556
Repayments under asset-specific debt agreements	0	(24,360)
Net proceeds from issuance of secured term loan	198,500	0
Repayments of secured term loans	(3,191)	(1,872)
Payment of deferred financing costs	(9,279)	(20,487)
Contributions from non-controlling interests	13,448	8,108
Distributions to non-controlling interests	(11,180)	(6,681)
Dividends paid on class A common stock	(91,004)	(83,702)
Net cash provided by financing activities	431,693	389,077
Net (decrease) increase in cash and cash equivalents	(8,850)	208,428
Cash and cash equivalents at beginning of period	289,970	150,090
Effects of currency translation on cash and cash equivalents	(994)	(3,500)
Cash and cash equivalents at end of period	280,126	355,018
Supplemental disclosure of cash flows information
Payments of interest	(67,410)	(91,341)
Receipts (payments) of income taxes	264	(122)
Supplemental disclosure of non-cash investing and financing activities
Dividends declared, not paid	(91,159)	(83,290)
Loan principal payments held by servicer, net	$ 2,578	$ 656