Other Intangible Assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Estimated Annual Amoritzation Expense: [Abstract]
2013	$ 650
2014	584
2015	504
2016	455
2017	376
Later Years	1,923
Net Carrying Amount	4,492		4,749		1,458		1,443
Depositor Intangibles [Member]
Estimated Annual Amoritzation Expense: [Abstract]
2013	92	[1]
2014	51	[1]
2015	10	[1]
2016	0	[1]
2017	0	[1]
Later Years	0	[1]
Net Carrying Amount	153	[1]	286	[1]	460	[1]	674	[1]
Mortgage Servicing Rights [Member]
Estimated Annual Amoritzation Expense: [Abstract]
2013	197	[2]
2014	197	[2]
2015	175	[2]
2016	154	[2]
2017	95	[2]
Later Years	41	[2]
Net Carrying Amount	859	[2]	599	[2]	371	[2]	212	[2]
Customer Intangibles [Member]
Estimated Annual Amoritzation Expense: [Abstract]
2013	361	[1]
2014	336	[1]
2015	319	[1]
2016	301	[1]
2017	281	[1]
Later Years	1,882	[1]
Net Carrying Amount	$ 3,480	[1]	$ 3,864	[1]	$ 627	[1]	$ 557	[1]

[1] Reported in the income statement as a component of other operating expense.

[2] Reported in the income statement as a reduction of fees for other services to customers.