Fair Value Measurements Fair Value Measurements-Assets Measured on a Non-recurring basis, Valuation Techniques (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	$ 5,953	$ 4,669
Other Real Estate, Foreclosed Assets, and Repossessed Assets	990	1,008
Fair Value, Inputs, Level 3
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	5,953	4,669
Other Real Estate, Foreclosed Assets, and Repossessed Assets	$ 990	$ 1,008
Fair Value Measurements, Valuation Techniques	Appraisal of collateral	Appraisal of collateral
Fair Value Measurements, Significant Assumptions	Appraisal adjustments	Appraisal adjustments