Income Taxes (Net Deferred Tax Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Components of Deferred Tax Assets [Abstract]
Allowance for loan losses	$ 6,525	$ 5,566
Loan fees	126	518
Purchase accounting adjustments	140	187
Nonperforming assets	4,074	4,432
Accrued expenses	99	148
Share-based compensation	120	277
Employee benefit plans	235	185
Net pension liability and unamortized pension costs	869	956
Unrealized loss on cash flow hedge	926	684
Net operating loss carry forward	715	5,606
Tax credit carry forward	1,758	982
Other	399	52
Total deferred tax assets	15,986	19,593
Components of Deferred Tax Liabilities [Abstract]
Fixed assets and depreciation	(1,026)	(1,460)
Federal Home Loan Bank stock dividends	(147)	(478)
Intangible assets	(1,139)	(1,290)
Prepaid expenses	(405)	(393)
Unrealized gain on securities available for sale	(2,719)	(1,823)
Other	(17)	(34)
Total deferred tax liabilities	(5,453)	(5,478)
Net deferred tax assets	$ 10,533	$ 14,115