Fair Value, Assets Measured on Nonrecurring Basis, Valuation Techniques (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Sep. 30, 2020	Mar. 31, 2020
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other Real Estate Owned	$ 60	$ 120
Fair Value, Measurements, Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	588	1,293
Other Real Estate Owned	60	120
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	588	1,293
Other Real Estate Owned	$ 60	$ 120
Fair Value Measurements, Valuation Processes, Description	Appraisal of collateral	Appraisal of collateral
Measurement Input, Appraised Value [Member] | Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description	Appraisal adjustments	Appraisal adjustments