Premises and Equipment (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Maximum [Member]	Jun. 30, 2008 Per Year Through 2016 [Member]	Jun. 30, 2008 Thereafter [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 1,950,000	$ 1,890,000	$ 1,700,000
Lease agreements expiring				20 years
Rent expense	1,080,000	1,020,000	1,020,000
Deferred gains on saleleaseback transaction					423,000	635,000
Expected intangible asset amortization for 2013	$ 0