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Stock Incentive Plans - Schedule of Share Based Compensation Shares Authorized under Stock Option Plans by Exercise Price Range Table (Details)
12 Months Ended
Mar. 31, 2020
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of options outstanding (in shares) | shares 1,869,815
Number of exercisable options (in shares) | shares 1,869,815
$8.96 - $24.47  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of option exercise price, minimum (in dollars per share) $ 8.96
Range of option exercise price, maximum (in dollars per share) $ 24.47
Number of options outstanding (in shares) | shares 545,394
Weighted average exercise price (in dollars per share) $ 19.03
Weighted average remaining contractual life (in years) 2 years 10 months 6 days
Number of exercisable options (in shares) | shares 545,394
Weighted average exercise price of exercisable options (in dollars per share) $ 19.03
$25.14 - $41.92  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of option exercise price, minimum (in dollars per share) 25.14
Range of option exercise price, maximum (in dollars per share) $ 41.92
Number of options outstanding (in shares) | shares 833,679
Weighted average exercise price (in dollars per share) $ 28.08
Weighted average remaining contractual life (in years) 4 years 7 months 13 days
Number of exercisable options (in shares) | shares 833,679
Weighted average exercise price of exercisable options (in dollars per share) $ 28.08
$42.05 - $58.80  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of option exercise price, minimum (in dollars per share) 42.05
Range of option exercise price, maximum (in dollars per share) $ 62.44
Number of options outstanding (in shares) | shares 490,742
Weighted average exercise price (in dollars per share) $ 45.13
Weighted average remaining contractual life (in years) 5 years 2 months 26 days
Number of exercisable options (in shares) | shares 490,742
Weighted average exercise price of exercisable options (in dollars per share) $ 45.13