Fair Value Measurements-Assets Measured on a Non-recurring basis, Valuation Techniques (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	$ 5,341	$ 1,293
Other Real Estate Owned	60	120
Fair Value, Inputs, Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	$ 5,341	$ 1,293
Fair Value Measurements, Valuation Processes, Description	Appraisal of collateral	Appraisal of collateral
Other Real Estate Owned	$ 60	$ 120
Fair Value, Inputs, Level 3 | Measurement Input, Appraised Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description	Appraisal adjustments	Appraisal adjustments