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Stock Acquisition Rights, Stock Options and Warrants - Summary of Performance Stock Options (Details) - $ / shares |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 07, 2021 | Aug. 23, 2021 | Feb. 28, 2020 | Mar. 31, 2022 | Mar. 31, 2020
Options |  |  |  |  |
Options granted (in shares) | 65,768 | 100,000 |  |  |
Weighted Average Exercise Price |  |  |  |  |
Granted (in dollars per share) | $ 60.92 | $ 57.00 |  |  |
Performance-Based Stock Options |  |  |  |  |
Options |  |  |  |  |
Beginning options outstanding (in shares) |  |  |  | 48,417 |
Options granted (in shares) |  |  | 67,562 | 0 | 82,197
Options exercised (in shares) |  |  |  | (14,635) |
Options forfeited/expired (in shares) |  |  |  | 0 |
Ending options outstanding (in shares) |  |  |  | 33,782 |
Weighted Average Exercise Price |  |  |  |  |
Beginning outstanding (in dollars per share) |  |  |  | $ 46.85 |
Granted (in dollars per share) |  |  |  | 0 |
Exercised (in dollars per share) |  |  |  | 46.85 |
Forfeited/expired (in dollars per share) |  |  |  | 0 |
Ending outstanding (in dollars per share) |  |  |  | $ 46.85 |

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- Definition For presentations that combine terminations, 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 or that expired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average price of options that were either forfeited or expired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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