FDIC Indemnification Asset (Details) (USD $)	9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Dec. 31, 2012
FDIC Indemnification Asset [Abstract]
FDIC True-up provisions	$ 1,300,000				$ 1,100,000
Write-down of FDIC indemnification asset	3,500,000		3,000,000
Balance, beginning of period	21,774,000		28,348,000
Accretion	(141,000)		187,000
Transfers to FDIC claims receivable	(1,097,000)		(1,271,000)
Change in expected cash flows	(3,251,000)	[1]	(2,925,000)	[1]
Change in FDIC true up provision	(200,000)		(360,000)
Balance, end of period	$ 17,085,000		$ 23,979,000

[1] The decrease during the first nine months of 2013 was due to loan pay-offs, improved cash flow projections, and lower loss expectations for covered loans.