Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities
Net income	$ 75,157	$ 15,696
Adjustments to reconcile net income to net cash provided by operating activities
Valuation allowance on loans held-for-sale		(1,200)
Gain on investments at fair value	(7,604)	(4,464)
Income from equity investments in unconsolidated subsidiaries	(24,294)
Gain on extinguishment of debt		(38)
Non-cash compensation expense	6,824	2,138
Distributions of income from unconsolidated subsidiaries	14,125
Amortization of deferred interest on loans	(12,763)	(3,265)
Amortization of deferred financing costs and premiums/discount on debt obligations	6,842	1,381
Changes in assets and liabilities, net
Accrued interest receivable, prepaid expenses, and other assets	(8,184)	1,182
Accounts payable, accrued expenses, and other liabilities	7,357	3,015
Net cash provided by operating activities	57,460	14,445
Cash flows from investing activities
Originations and fundings of loans receivable	(2,297,545)	(1,385,729)
Origination and exit fees received on loans receivable	28,015	9,036
Principal collections and proceeds from the sale of loans receivable and other assets	403,189	239,631
Distributions from equity investments		3,518
Increase in restricted cash	(759)	(62,150)
Net cash used in investing activities	(1,867,100)	(1,195,694)
Cash flows from financing activities
Borrowings under revolving repurchase obligations	2,348,197	580,781
Repayments under revolving repurchase obligations	(1,537,138)	(261,678)
Borrowings under asset-specific repurchase agreements	163,088	310,827
Repayments under asset-specific repurchase agreements	(181,858)	(7,104)
Repayment of other liabilities	(20,794)	(64,943)
Proceeds from sales of loan participations	368,850
Payment of deferred financing costs	(12,780)	(5,744)
Settlement of interest rate swaps		(6,123)
Contributions from non-controlling interests		15,000
Purchase of and distributions to non-controlling interests	(13,323)	(18,717)
Proceeds from issuance of class A common stock	763,407	633,810
Dividends paid on class A common stock	(55,399)
Net cash provided by financing activities	1,822,250	1,176,109
Net increase in cash and cash equivalents	12,610	(5,140)
Cash and cash equivalents at beginning of period	52,342	15,423
Effects of currency translation on cash and cash equivalents	(1,609)
Cash and cash equivalents at end of period	63,343	10,283
Supplemental disclosure of cash flows information
Payments of interest	(35,977)	(4,801)
Payments of income taxes	(1,398)	(218)
Supplemental disclosure of non-cash investing and financing activities
Dividends declared, not paid	28,892
Participations sold	368,850
Consolidation of subsidiaries		$ (38,913)