Non-covered Other Real Estate Owned (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Other Real Estate, Non Covered [Roll Forward]
Balance, beginning of period	$ 4,726	$ 4,414	$ 3,023	$ 1,976
Additions to OREO	187	554	3,827	4,296
Capitalized improvements	20	0	222	0
Dispositions of OREO, net	0	(759)	(1,783)	(1,514)
Valuation adjustments	(186)	(129)	(542)	(678)
Balance, end of period	$ 4,747	$ 4,080	$ 4,747	$ 4,080