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Share-based Payments, Stock Option Activity (Details) - Stock Options [Member] - USD ($)
 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Black-Scholes option pricing model assumptions used to derive the weighted average fair value of the stock options granted [Abstract]      
Weighted average risk free interest rate   0.44% 1.76%
Weighted average expected holding period   5 years 11 months 15 days 5 years 8 months 12 days
Weighted average expected volatility   44.90% 42.50%
Weighted average expected dividend yield   0.00% 0.00%
Weighted average fair value of options granted (in dollars per share)   $ 6.43 $ 8.27
Number of Shares [Roll Forward]      
Outstanding at beginning of period (in shares) 1,744,885    
Granted (in shares) 0    
Exercised (in shares) (35,429)    
Forfeited (in shares) (13,957)    
Outstanding at end of period (in shares) 1,695,499 1,744,885  
Weighted Average Exercise Price [Roll Forward]      
Outstanding at beginning of period (in dollars per share) $ 17.51    
Granted (in dollars per share) 0    
Exercised (in dollars per share) 15.07    
Forfeited (in dollars per share) 20.74    
Outstanding at end of period (in dollars per share) $ 17.53 $ 17.51  
Number of stock options unvested (in shares) 314,359    
Weighted average exercise price of stock options unvested (in dollars per share) $ 16.52    
Pre-tax intrinsic value of options exercised $ 245,000 $ 546,000 $ 508,000
Fair value of vested stock options $ 2,174,000 $ 2,184,000 $ 2,189,000
Closing stock price (in dollars per share) $ 17.83    
Total unrecognized compensation expense, options $ 1,065,000    
Weighted average vesting period over which compensation expense is expected to be recognized 1 year    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]      
Options outstanding, shares (in shares) 1,695,499    
Options outstanding, weighted average exercise price (in dollars per share) $ 17.53    
Options outstanding, weighted average remaining life 4 years 10 months 2 days    
Options outstanding, aggregate intrinsic value $ 5,657,000    
Options exercisable, shares (in shares) 1,381,140    
Options exercisable, weighted average exercise price (in dollars per share) $ 17.76    
Options exercisable, weighted average remaining life 4 years 1 month 20 days    
Options exercisable, aggregate intrinsic value $ 5,061,000    
$5.20 to $6.47 [Member]      
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]      
Exercise price of options, lower range (in dollars per share) $ 5.20    
Exercise price of options, upper range (in dollars per share) $ 6.47    
Options outstanding, shares (in shares) 301,234    
Options outstanding, weighted average exercise price (in dollars per share) $ 6.46    
Options outstanding, weighted average remaining life 8 months 26 days    
Options exercisable, shares (in shares) 301,234    
Options exercisable, weighted average exercise price (in dollars per share) $ 6.46    
Options exercisable, weighted average remaining life 8 months 26 days    
$6.48 to $18.20 [Member]      
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]      
Exercise price of options, lower range (in dollars per share) $ 6.48    
Exercise price of options, upper range (in dollars per share) $ 18.20    
Options outstanding, shares (in shares) 504,241    
Options outstanding, weighted average exercise price (in dollars per share) $ 13.40    
Options outstanding, weighted average remaining life 6 years 7 days    
Options exercisable, shares (in shares) 277,422    
Options exercisable, weighted average exercise price (in dollars per share) $ 11.93    
Options exercisable, weighted average remaining life 4 years 2 months 26 days    
$18.21 to $22.83 [Member]      
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]      
Exercise price of options, lower range (in dollars per share) $ 18.21    
Exercise price of options, upper range (in dollars per share) $ 22.83    
Options outstanding, shares (in shares) 468,467    
Options outstanding, weighted average exercise price (in dollars per share) $ 19.59    
Options outstanding, weighted average remaining life 6 years 9 months 18 days    
Options exercisable, shares (in shares) 380,927    
Options exercisable, weighted average exercise price (in dollars per share) $ 19.51    
Options exercisable, weighted average remaining life 6 years 8 months 8 days    
$22.84 to $28.04 [Member]      
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]      
Exercise price of options, lower range (in dollars per share) $ 22.84    
Exercise price of options, upper range (in dollars per share) $ 28.04    
Options outstanding, shares (in shares) 192,233    
Options outstanding, weighted average exercise price (in dollars per share) $ 26.26    
Options outstanding, weighted average remaining life 4 years 6 months    
Options exercisable, shares (in shares) 192,233    
Options exercisable, weighted average exercise price (in dollars per share) $ 26.26    
Options exercisable, weighted average remaining life 4 years 6 months    
$28.05 to $34.17 [Member]      
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]      
Exercise price of options, lower range (in dollars per share) $ 28.05    
Exercise price of options, upper range (in dollars per share) $ 34.17    
Options outstanding, shares (in shares) 229,324    
Options outstanding, weighted average exercise price (in dollars per share) $ 29.62    
Options outstanding, weighted average remaining life 3 years 11 months 12 days    
Options exercisable, shares (in shares) 229,324    
Options exercisable, weighted average exercise price (in dollars per share) $ 29.62    
Options exercisable, weighted average remaining life 3 years 11 months 12 days