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SHARE-BASED EMPLOYEE COMPENSATION (Tables) | 6 Months Ended
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Sep. 30, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |
Stock Option Activity | The following table represents stock option activity for the six months ended September 30, 2024:
|  | Number of Shares |  |  | Weighted- Average Exercise Price |
Outstanding Options at March 31, 2024 |  |  | 252,364 |  |  | $ | 91.28 |
Granted |  |  | 5,476 |  |  | $ | 244.92 |
Exercised |  |  | (24,366 | ) |  | $ | 97.26 |
Cancelled |  |  | — |  |  | $ | — |
Outstanding Options at September 30, 2024 |  |  | 233,474 |  |  | $ | 94.00 |
Options Exercisable at September 30, 2024 |  |  | 195,201 |  |  |  |
Weighted-Average Fair Value of Options Granted During the Year |  | $ | 104.45 |  |  |  |
Stock Options Outstanding | The following table summarizes information about stock options outstanding at September 30, 2024:
|  | Options Outstanding |  |  | Options Exercisable |
Range of Exercise Prices |  | Number of Shares Outstanding |  |  | Weighted- Average Remaining Contractual Life (in years) |  |  | Weighted- Average Exercise Price |  |  | Number of Shares Outstanding |  |  | Weighted- Average Exercise Price |
$59.32 - $81.28 |  |  | 101,349 |  |  |  | 5.11 |  |  | $ | 62.64 |  |  |  | 101,349 |  |  | $ | 62.64 |
$87.37 - $106.00 |  |  | 65,031 |  |  |  | 4.04 |  |  | $ | 94.54 |  |  |  | 63,173 |  |  | $ | 94.46 |
$118.27 - $139.25 |  |  | 52,615 |  |  |  | 7.60 |  |  | $ | 126.54 |  |  |  | 24,673 |  |  | $ | 126.33 |
$143.09 - $261.73 |  |  | 14,479 |  |  |  | 8.63 |  |  | $ | 192.94 |  |  |  | 6,006 |  |  | $ | 158.61 |
|  |  | 233,474 |  |  |  | 5.59 |  |  | $ | 94.00 |  |  |  | 195,201 |  |  | $ | 83.94 |
Summary of Activity for Restricted Stock Units and Nonvested Restricted Stock | The following table summarizes the activity for restricted stock units and nonvested restricted stock during the six months ended September 30, 2024:
|  | Number of Shares |  |  | Weighted-Average Grant Date Fair Value |
Restricted Stock Units and Nonvested Restricted Stock at March 31, 2024 |  |  | 204,946 |  |  | $ | 121.12 |
Granted |  |  | 66,741 |  |  | $ | 240.61 |
Vested |  |  | (26,194 | ) |  | $ | 183.42 |
Forfeited |  |  | — |  |  | $ | — |
Restricted Stock Units and Nonvested Restricted Stock at September 30, 2024 |  |  | 245,493 |  |  | $ | 156.30 |
Fiscal 2025 Employee Performance Stock Awards [Member] |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |
Weighted-Average Assumptions Used to Value Option Awards | The fair value of the above Performance Stock Awards was determined using a Monte Carlo simulation. The following are key inputs in the Monte Carlo analysis for the Fiscal 2025 Employee Performance Stock Award.
Measurement Period (in years) |  |  | 2.85 |
Risk-Free Interest Rate |  |  | 4.7 | %
Dividend Yield |  |  | 0.4 | %
Volatility |  |  | 31.4 | %
Estimated Fair Value of Market-Based PSAs at Grant Date |  | $ | 238.27 |
Fiscal 2025 Board of Directors Stock Option Award [Member] |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |
Weighted-Average Assumptions Used to Value Option Awards | The weighted-average assumptions used in the Black-Scholes model to value the Fiscal 2025 Board of Directors Stock Option Award are as follows:
Dividend Yield |  |  | 0.5 | %
Expected Volatility |  |  | 38.8 | %
Risk-Free Interest Rate |  |  | 4.2 | %
Expected Life |  | 6.0 Years |

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