Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	$ 0	$ 0	$ 862	$ 0
Accumulated Other Comprehensive Loss, Available-for-sale Securities Adjustment, Net of Tax			932	(939)
Other comprehensive loss, net of taxes	163	142	(911)	1,021
Accumulated Other Comprehensive Loss, Available-for-sale Securities Adjustment, Net of Tax	$ 21	$ 82	$ 21	$ 82

Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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