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STOCK-BASED COMPENSATION (Tables)
 9 Months Ended
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Performance Shares Vesting Based on EPS Targets The Performance Option performance target is set forth below.
Trailing 4-Quarter EPS Targets for
September 30, 2018 through March 31, 2025		Options Eligible for Vesting
(Percentage of Award)
$25.30100%
Fair value was estimated at grant date using the weighted-average
Fair value was estimated at grant date using the weighted-average assumptions listed below:
Three months ended December 31,Nine months ended December 31,
2020201920202019
Dividend Yield—%—%—%—%
Expected Volatility57.09%52.87%56.48%52.09%
Average risk-free rate0.43%1.64%0.38%1.66%
Expected Life6.0 years6.0 years6.2 years6.2 years
Summary schedule of stock option activity
Option activity for the nine months ended December 31, 2020 was as follows:
 SharesWeighted Average Exercise
Price		Weighted Average
Remaining
Contractual Term		Aggregate Intrinsic Value
Options outstanding, beginning of period646,728 $88.30   
Granted during period26,402 95.59   
Exercised during period(33,776)66.79   
Forfeited during period(15,640)103.66   
Expired during period(300)76.51   
Options outstanding, end of period623,414 $89.43 6.0 years$8,627,259 
Options exercisable, end of period342,736 $79.29 4.2 years$7,992,605 
Intrinsic value of options exercised The total intrinsic value of options exercised during the periods ended December 31, 2020 and 2019 was as follows:
December 31,
2020		December 31,
2019
Three months ended$718,343 $728,193 
Nine months ended$1,215,063 $5,078,750 
Summary of the status and changes restricted stock
A summary of the status of the Company’s restricted stock as of December 31, 2020, and changes during the nine months ended December 31, 2020, are presented below:
 SharesWeighted Average Fair Value at Grant Date
Outstanding at March 31, 2020705,254 $101.47 
Granted during the period39,675 96.14 
Vested during the period(83,250)101.17 
Forfeited during the period(60,000)100.79 
Outstanding at December 31, 2020601,679 $101.23 
Share-based compensation included as a component of net income
Total stock-based compensation included as a component of net income during the three and nine month periods ended December 31, 2020 and 2019 was as follows:
Three months ended December 31,Nine months ended December 31,
2020201920202019
Stock-based compensation related to equity classified awards:
Stock-based compensation related to stock options$854,647 $1,168,033 $2,987,621 $4,394,143 
Stock-based compensation related to restricted stock, net of adjustments and exclusive of cancellations4,043,813 5,162,777 11,521,082 18,539,144 
Total stock-based compensation related to equity classified awards$4,898,460 $6,330,810 $14,508,703 $22,933,287 
Restricted Stock  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Performance Shares Vesting Based on EPS Targets
The Performance Share performance targets are set forth below.
Trailing 4-Quarter EPS Targets for
September 30, 2018 through March 31, 2025		Restricted Stock Eligible for Vesting
(Percentage of Award)
$16.3540%
$20.4560%