OREO (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Real Estate Acquired Through Foreclosure [Roll Forward]
Beginning balance	$ 44,756	$ 31,995	$ 37,452	$ 33,632
Additions	19,139	2,883	33,117	5,763
Capitalized improvements	406	0	75	15
Valuation adjustments	(569)	(1,963)	(1,147)	(3,515)
Dispositions	(9,915)	(4,592)	(15,680)	(7,572)
Ending balance	$ 53,817	$ 28,323	$ 53,817	$ 28,323