Goodwill and Other Intangible Assets (Mortgage Servicing Rights Activity) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Goodwill and Intangible Assets Disclosure [Abstract]
Mortgage Servicing Rights, Beginning Balance	$ 1,544	$ 1,353	$ 1,164
Mortgage Servicing Rights Amortization	(616)	(397)	(385)
Origination and Purchases of Mortgage Banking Assets	1,145	588	574
Mortgage Servicing Rights, Ending Balance	$ 2,073	$ 1,544	$ 1,353