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STOCK-BASED COMPENSATION (Tables)
 3 Months Ended
Jun. 30, 2021
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 June 30,
20212020
Dividend Yield—%—%
Expected Volatility57.05%55.10%
Average risk-free rate1.01%0.43%
Expected Life6.0 years6.2 years
Summary schedule of stock option activity
Option activity for the three months ended June 30, 2021 was as follows:
 SharesWeighted Average Exercise
Price		Weighted Average
Remaining
Contractual Term		Aggregate Intrinsic Value
Options outstanding, beginning of period500,168 $93.89   
Granted during period4,898 160.08   
Exercised during period(23,494)76.99   
Forfeited during period(4,000)100.79   
Expired during period— —   
Options outstanding, end of period477,572 $95.34 6.2 years$31,007,801 
Options exercisable, end of period189,701 $82.04 4.0 years$14,835,182 
Intrinsic value of options exercised The total intrinsic value of options exercised during the periods ended June 30, 2021 and 2020 was as follows:
June 30,
2021		June 30,
2020
Three months ended$2,021,676 $— 
Summary of the status and changes restricted stock
A summary of the status of the Company’s restricted stock as of June 30, 2021, and changes during the three months ended June 30, 2021, are presented below:
 SharesWeighted Average Fair Value at Grant Date
Outstanding at March 31, 2021614,739 $101.99 
Granted during the period— — 
Vested during the period(2,666)118.26 
Forfeited during the period— — 
Outstanding at June 30, 2021612,073 $101.92 
Share-based compensation included as a component of net income
Total stock-based compensation included as a component of net income during the three month periods ended June 30, 2021 and 2020 was as follows:
Three months ended June 30,
20212020
Stock-based compensation related to equity classified awards:
Stock-based compensation related to stock options$943,627 $1,046,735 
Stock-based compensation related to restricted stock, net of adjustments and exclusive of cancellations3,240,463 3,536,865 
Total stock-based compensation related to equity classified awards$4,184,090 $4,583,600 
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%