Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]
Allowance for covered loans	$ 12,977	[1]	$ 14,320
Common stock, par value
Common stock, shares authorized	200,000,000		200,000,000
Common stock, shares issued	111,891,283		112,164,891
Common stock, shares outstanding	111,891,283		112,164,891

[1] The allowance on covered loan and lease losses includes an allowance on covered loan advances on acquired loans subsequent to acquisition.