Fair Value Measurements Assets within Level 3 of Valuation Hierarchy (Details) (Fair Value, Inputs, Level 3 [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2011		Jun. 29, 2011	Mar. 31, 2011
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Servicing Asset at Fair Value, Amount		$ 465	$ 491			$ 521	$ 626
Mortgage Servicing unrealized loss	0			(105)	[1]
Servicing Asset at Fair Value, Amount		465	491			521	626
AFS Gross Unrealized Losses	0			0
Available-for-sale Securities		51	52			45	45
Available-for-sale Securities		$ 51	$ 52			$ 45	$ 45

[1] (1) Includes net servicing cash flows and the passage of time.