Share-Based Payments - Summary of option activity under the equity plans (Details) - Employee Stock Option - Equity Plans - $ / shares	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Shares
Outstanding, Beginning Balance	10,000	37,000
Granted	0	0
Exercised	0	0
Forfeited	(5,000)	(27,000)
Outstanding, Ending Balance	5,000	10,000	37,000
Exercisable	5,000
Weighted Average Exercise Price
Outstanding, Beginning Balance	$ 12.68	$ 11.85
Granted	0	0
Exercised	0	0
Forfeited	12.68	11.54
Outstanding, Ending Balance	12.68	$ 12.68	$ 11.85
Exercisable	$ 12.68
Weighted Average Remaining Contractual Term
Outstanding	3 months 18 days	9 months 18 days	1 year 5 months 12 days
Exercisable	3 months 18 days

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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 weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock 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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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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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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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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