Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Statement of Financial Position [Abstract]
Loans held for sale	$ 199,879	$ 223,638
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	62,124,551	62,057,645