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v3.22.2

Net Income (Loss) Per Share (Details) - shares | 12 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Earnings Per Share [Abstract] |  |
Stock options to purchase shares | 365,000 | 385,000

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares of stock issued during the period as part of a transaction to acquire assets that do not qualify as a business combination. + References No definition available. + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration