Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Expense - Stock Options Outstanding, Exercisable and Intrinsic Value (Details)

v3.22.1
Stock-Based Compensation Expense - Stock Options Outstanding, Exercisable and Intrinsic Value (Details) - Stock Options - USD ($)
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Options outstanding (in shares) 89,237 111,401 163,016 327,439
Options outstanding, weighted average exercise price (in dollars per share) $ 17.20      
$14.28        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Options outstanding (in shares) 45,867      
Options outstanding, weighted average exercise price (in dollars per share) $ 14.28      
Options outstanding, aggregate intrinsic value $ 88,065      
Options vested and exercisable, number exercisable (in shares) 0      
Options vested and exercisable, weighted average exercise price (in dollars per share) $ 0      
Options vested and exercisable, aggregate intrinsic value $ 0      
$19.64        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Options outstanding (in shares) 28,499      
Options outstanding, weighted average exercise price (in dollars per share) $ 19.64      
Options outstanding, aggregate intrinsic value $ 0      
Options vested and exercisable, number exercisable (in shares) 28,499      
Options vested and exercisable, weighted average exercise price (in dollars per share) $ 19.64      
Options vested and exercisable, aggregate intrinsic value $ 0      
$21.52        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Options outstanding (in shares) 14,871      
Options outstanding, weighted average exercise price (in dollars per share) $ 21.52      
Options outstanding, aggregate intrinsic value $ 0      
Options vested and exercisable, number exercisable (in shares) 14,871      
Options vested and exercisable, weighted average exercise price (in dollars per share) $ 21.52      
Options vested and exercisable, aggregate intrinsic value $ 0      
$14.28 - $21.52        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Options outstanding (in shares) 89,237      
Options outstanding, aggregate intrinsic value $ 88,065      
Options vested and exercisable, number exercisable (in shares) 43,370      
Options vested and exercisable, weighted average exercise price (in dollars per share) $ 20.28      
Options vested and exercisable, aggregate intrinsic value $ 0      
Minimum        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Exercise price $ 14.28      
Maximum        
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]        
Exercise price $ 21.52