Fair Value Measurements Assets classified within Level 3 valuation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale	$ 89,461		$ 116,051
Available-for-sale Securities, Gross Unrealized Gain (Loss)	(4,768)
Proceeds from principal payments, maturities, calls and sales of securities: Available-for-sale	51,592		44,830		23,854
Change in unrealized gain (loss) of securities available-for-sale, net	(5,282)		672		478
Servicing Asset at Fair Value, Amount	265		275
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale	49		50		52
Available-for-sale Securities, Gross Unrealized Gain (Loss)	0	[1]	0	[1]
Proceeds from principal payments, maturities, calls and sales of securities: Available-for-sale	(1)		(2)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net	0		0
Change in unrealized gain (loss) of securities available-for-sale, net	0		0
Servicing Asset at Fair Value, Amount	265		275		491
Mortgage Servicing unrealized loss	(10)	[1]			(216)	[1]
Payments for (Proceeds from) Mortgage Servicing Rights	0		0
Change in unrealized gains and losses to instruments held	$ (7)		$ (197)

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