Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	180,000,000	165,000,000
Common stock, issued	82,388,502	81,716,416
Common stock, outstanding	82,388,502	81,716,416
Variable interest held by entity, assets	$ 2,419,786	$ 2,901,214
Variable interest held by entity, liabilities	2,063,758	2,532,916
Residential Loans Held For Sale
Loans at fair value	727,278	556,283
Commercial Loans Held For Sale
Loans at fair value	$ 27,413	$ 0