Employee Benefit and Stock Compensation Plans-Stock Options, Activity (Details) - $ / shares	12 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	4,733	4,733
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	2,000	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period	133	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	6,600	4,733
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	4,350	3,633
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 7.71	$ 7.71
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	5.70	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	0	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price	97.50	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 5.42	$ 7.71

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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