FDIC Indemnification Asset (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
Schedule of FDIC indemnification asset
Beginning at the beginning of period	$ 4,753	$ 8,212	$ 7,100	$ 10,350
Cash payments received or receivable from the FDIC	(4)	(240)	(2,365)	(2,160)
FDIC share of additional estimated losses	2	(46)	613	720
Net amortization	(338)	(446)	(935)	(1,430)
Balance at the end of period	$ 4,413	$ 7,480	$ 4,413	$ 7,480