Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities
Net income	$ 152,418	$ 133,624
Adjustments to reconcile net income to net cash provided by operating activities
Non-cash compensation expense	15,522	13,754
Amortization of deferred fees on loans and debt securities	(28,511)	(24,161)
Amortization of deferred financing costs and premiums/discount on debt obligations	15,232	13,631
Changes in assets and liabilities, net
Other assets	(1,285)	(16,582)
Other liabilities	3,808	14,745
Net cash provided by operating activities	157,184	135,011
Cash flows from investing activities
Origination and fundings of loans receivable	(1,922,219)	(4,200,035)
Principal collections and sales proceeds from loans receivable and debt securities	1,807,121	1,966,125
Origination and exit fees received on loans receivable	17,721	62,200
Receipts under derivative financial instruments	9,893	20,784
Payments under derivative financial instruments	(2,941)	(7,452)
Collateral deposited under derivative agreements	(9,090)	(17,750)
Return of collateral deposited under derivative agreements	9,090	21,870
Net cash used in investing activities	(90,425)	(2,154,258)
Cash flows from financing activities
Borrowings under secured debt agreements	1,464,038	4,602,835
Repayments under secured debt agreements	(2,172,557)	(2,824,358)
Proceeds from sale of loan participations	21,346	72,384
Repayment of loan participations	(115,874)
Net proceeds from issuance of secured term loans	498,750
Payment of deferred financing costs	(23,323)	(15,815)
Contributions from non-controlling interests	18,628	2,475
Distributions to non-controlling interests	(728)	(3,986)
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	102,496
Dividends paid on class A common stock	(154,443)	(133,968)
Net cash (used in) provided by financing activities	(91,834)	2,016,646
Net decrease in cash and cash equivalents	(25,075)	(2,601)
Cash and cash equivalents at beginning of period	105,662	102,518
Effects of currency translation on cash and cash equivalents	(3)	7,140
Cash and cash equivalents at end of period	80,584	107,057
Supplemental disclosure of cash flows information
Payments of interest	(219,573)	(138,451)
Payments of income taxes	(99)	(263)
Supplemental disclosure of non-cash investing and financing activities
Dividends declared, not paid	(83,259)	(69,094)
Loan principal payments held by servicer, net	$ 32,975	$ 1,330