Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]
Allowance for covered loans	$ 15,532	$ 14,320
Common stock, par value
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	111,915,015	112,164,891
Common stock, shares outstanding	111,915,015	112,164,891