Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Loans held for sale	$ 190,635	$ 465,983
Loans receivable, at fair value	$ 26,931	$ 23,177
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding	0	0
Common stock, shares authorized	151,515,151	151,515,151
Common stock, shares outstanding	62,314,862	62,207,529