Foreclosed Real Estate (Details) (USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Foreclosed Real Estate [Abstract]
Number of residential properties	46
Number of properties sold	49
Transfer from loans to foreclosed real estate, write-downs	$ 5,927,000
Net gain on sale of foreclosed real estate	701,000		(639,000)	[1]	(449,000)	[1]
Expense on sale of property	1,222,000
foreclosed real estate [Abstract]
Foreclosed real estate at beginning balance	19,932,000	[1]	20,955,000		21,574,000
Transfer of loans to foreclosed real estate	13,248,000		16,295,000	[1]	24,137,000	[1]
Property improvements	374,000		502,000	[1]	430,000	[1]
Additional write downs	(3,284,000)		(3,562,000)	[1]	(3,451,000)	[1]
Property sold, including loss on sale	(18,829,000)		(14,258,000)		(21,735,000)
Foreclosed real estate at ending balance	11,441,000		19,932,000	[1]	20,955,000
Specific reserves on transferred from impaired loans	$ 3,267,000		$ 3,584,000		$ 8,146,000

[1] Restated