Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assets
Cash and cash equivalents	$ 157,167	$ 237,606
Restricted cash and cash equivalents	350,385	896,396
Securities	573,312	533,520
Corporate loans, net (includes $237,480 and $35,879 measured at estimated fair value and $279,748 and $128,289 loans held for sale as of December 31, 2013 and December 31, 2012, respectively)	6,466,720	5,947,857
Equity investments, at estimated fair value (zero and $7,187 pledged as collateral as of December 31, 2013 and December 31, 2012, respectively)	181,212	161,621
Oil and gas properties, net	400,369	289,929
Interests in joint ventures and partnerships	436,241	149,534
Derivative assets	30,224	23,207
Interest and principal receivable	33,570	46,960
Other assets	87,998	72,249
Total assets	8,717,198	8,358,879
Liabilities
Credit facilities	125,289	107,789
Convertible senior notes		166,028
Senior notes	362,276	362,178
Junior subordinated notes	283,517	283,517
Accounts payable, accrued expenses and other liabilities	58,215	25,931
Related party payable	5,574	10,998
Derivative liabilities	81,635	117,270
Total liabilities	6,189,464	6,519,757
Shareholders' equity
Preferred shares, no par value, 50,000,000 shares authorized and 14,950,000 and zero issued and outstanding as of December 31, 2013 and December 31, 2012, respectively	0	0
Common shares, no par value, 500,000,000 shares authorized, and 204,824,159 and 178,437,078 shares issued and outstanding as of December 31, 2013 and December 31, 2012, respectively	0	0
Paid-in-capital	3,315,117	2,762,584
Accumulated other comprehensive loss	(15,652)	(70,226)
Accumulated deficit	(771,731)	(853,236)
Total shareholders' equity	2,527,734	1,839,122
Total liabilities and shareholders' equity	8,717,198	8,358,879
Affiliates
Liabilities
Collateralized loan obligation junior secured notes to affiliates		296,557
Accrued interest payable		6,632
Nonaffiliates
Liabilities
Collateralized loan obligation secured notes	5,249,383	5,122,338
Accrued interest payable	$ 23,575	$ 20,519