Fair Values of Assets and Liabilities (Unobservable Inputs Reconciliations) (Details) (Recurring [Member], Level 3 [Member], Mortgage servicing rights [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Recurring [Member] | Level 3 [Member] | Mortgage servicing rights [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	$ 0	$ 2,359
Total gains or losses (realized/unrealized) included in earnings, net of amortization	726	(117)
Purchases, issuance and settlements	0	0
Servicing rights sold	0	(2,242)
Ending balance	$ 726	$ 0