Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities
Net income	$ 227,811	$ 211,917
Adjustments to reconcile net income to net cash provided by operating activities
Non-cash compensation expense	23,276	20,488
Amortization of deferred fees on loans and debt securities	(40,110)	(35,955)
Amortization of deferred financing costs and premiums/discount on debt obligations	22,702	20,993
Changes in assets and liabilities, net
Other assets	(3,518)	(9,709)
Other liabilities	(1,570)	15,001
Net cash provided by operating activities	228,591	222,735
Cash flows from investing activities
Origination and fundings of loans receivable	(3,319,563)	(5,222,803)
Principal collections and sales proceeds from loans receivable and debt securities	2,589,622	2,503,454
Loan contributed to securitization		512,002
Investment in debt securities held-to-maturity		(95,937)
Origination and exit fees received on loans receivable	32,527	74,111
Receipts under derivative financial instruments	35,756	34,975
Payments under derivative financial instruments	(4,650)	(14,031)
Collateral deposited under derivative agreements	(11,400)	(32,110)
Return of collateral deposited under derivative agreements	9,090	28,870
Net cash used in investing activities	(668,618)	(2,211,469)
Cash flows from financing activities
Borrowings under secured debt agreements	2,950,456	5,749,678
Repayments under secured debt agreements	(3,048,960)	(4,147,893)
Proceeds from sale of loan participations	21,346	86,339
Repayment of loan participations	(115,874)	(85,875)
Net proceeds from issuance of secured term loans	498,750
Repayments on secured term loans	(1,250)
Payment of deferred financing costs	(25,710)	(18,995)
Contributions from non-controlling interests	26,721	4,500
Distributions to non-controlling interests	(20,556)	(4,100)
Net proceeds from issuance of convertible notes		214,775
Repayment of convertible notes		(192)
Net proceeds from issuance of class A common stock	372,329	369,787
Dividends paid on class A common stock	(237,702)	(203,065)
Net cash provided by financing activities	419,550	1,964,959
Net decrease in cash and cash equivalents	(20,477)	(23,775)
Cash and cash equivalents at beginning of period	105,662	102,518
Effects of currency translation on cash and cash equivalents	(896)	8,244
Cash and cash equivalents at end of period	84,289	86,987
Supplemental disclosure of cash flows information
Payments of interest	(324,013)	(224,320)
Payments of income taxes	(205)	(546)
Supplemental disclosure of non-cash investing and financing activities
Dividends declared, not paid	(83,259)	(74,195)
Loan principal payments held by servicer, net	$ 56,843	$ 3,577