Fair Value Measurements Assets within Level 3 of Valuation Hierarchy (Details) (USD $)	3 Months Ended				9 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2014		Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale					$ 89,461,000
Available-for-sale	100,448,000				100,448,000
Change in unrealized loss of securities available-for sale	1,103,000		(1,546,000)		2,817,000		(6,979,000)
Mortgage servicing rights					265,000
Mortgage servicing rights	211,000				211,000
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale					49,000		50,000
Available-for-sale Securities, Gross Unrealized Gain (Loss)					0		0
Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities					(2,000)		(1,000)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net					0		0
Available-for-sale	47,000		49,000		47,000		49,000
Change in unrealized loss of securities available-for sale					0		0
Mortgage servicing rights					265,000		275,000
Mortgage Servicing unrealized loss	(54,000)	[1]	6,000	[1]	(54,000)	[1]	6,000	[1]
Payments for (Proceeds from) Mortgage Servicing Rights					0		0
Mortgage servicing rights	211,000		281,000		211,000		281,000
Change in unrealized gains and losses to instruments held					$ (52,000)		$ 5,000

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