Fair Value Measurements Assets within Level 3 of Valuation Hierarchy (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Jun. 30, 2011	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities	$ 109,900		$ 109,900
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities		45	52	45
Available-for-sale Securities, Gross Unrealized Gain (Loss)	0		0	0
Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities			(2)	0
Available-for-sale Securities	50		50	45
Servicing Asset at Fair Value, Amount		626	491	626
Mortgage Servicing unrealized loss	(72)		(72)	(117)
Payments for (Proceeds from) Mortgage Servicing Rights			0	0
Servicing Asset at Fair Value, Amount	419		419	509
Available-for-sale Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Change in unrealized gains and losses to instruments held	0			0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net			0	0
Servicing Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Change in unrealized gains and losses to instruments held	(68)	(106)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net			$ 0	$ 0