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Stock-Based Compensation (Tables) | 12 Months Ended
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Mar. 31, 2025
Stock-Based Compensation |
Assumptions Used in Determining Fair Value of Options | The Company estimated the fair value of option awards on the date of grant using the Black-Scholes option valuation model and the following assumptions:
​ | ​ | ​ | ​ | ​
​ |  | Year ended March 31, 2023 |
Fair value of options | ​ | $ | 6.99 | ​
Expected life of awards in years | ​ |  | 6.0 | ​
Risk-free interest rate | ​ |  | 3.0 | %
Expected volatility of the Company’s stock | ​ |  | 57.8 | %
Expected dividend yield on the Company’s stock | ​ |  | 0.0 | %
Stock Option Activity | A summary of stock option activity for fiscal 2025 was as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ | ​ |  | Weighted-average |  | ​ | ​
​ | ​ | ​ | ​ | Weighted-average | ​ | remaining contractual | ​ | Aggregate
​ | ​ | Shares | ​ | exercise price | ​ | term (years) | ​ | intrinsic value
Outstanding, beginning of year |  | 0.6 | ​ | $ | 12.78 |  |  |  | ​ |
Granted |  | — | ​ |  | — |  |  |  | ​ |
Exercised |  | (0.1) | ​ |  | 11.79 |  |  |  | ​ |
Forfeited or expired |  | — | ​ |  | 12.85 |  |  |  | ​ |
Outstanding, end of year |  | 0.5 | ​ | $ | 12.94 |  | 5.9 | ​ | $ | 31.8
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Exercisable, March 31, 2025 |  | 0.4 | ​ | $ | 12.80 |  | 5.7 | ​ | $ | 25.5
Information Related to Stock Options Exercised | Additional information related to stock options exercised is as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Years ended March 31,
​ |  | 2025 |  | 2024 |  | 2023
Intrinsic value of stock options exercised | ​ | $ | 8.1 | ​ | $ | 12.4 | ​ | $ | 1.5
Proceeds from stock options exercised | ​ |  | 1.0 | ​ |  | 2.6 | ​ |  | 2.9
Restricted Stock Activity | A summary of restricted stock activity for fiscal 2025 was as follows:
​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Weighted-average
​ |  | Shares |  | price
Non-vested balance, beginning of year | ​ | 0.5 | ​ | $ | 21.08
Granted | ​ | 0.1 | ​ |  | 111.02
Vested | ​ | (0.3) | ​ |  | 19.02
Forfeited | ​ | — | ​ |  | 35.71
Non-vested balance, end of year | ​ | 0.3 | ​ | $ | 42.90

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- Definition Tabular disclosure of cash received from exercise of stock options and similar instruments granted under share-based payment arrangements and tax benefit from exercise of stock options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2A -Subparagraph (a) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2A + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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