Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Employee Stock Options Narrative (Details)

v3.20.1
Stock-Based Compensation - Employee Stock Options Narrative (Details) - Stock Options - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares authorized for grant 12,200    
Expiration period 10 years    
Options (in thousands)      
Options outstanding, beginning balance (in shares) 155    
Options exercised (in shares) 59    
Options expired (in shares) 4    
Options outstanding, ending balance (in shares) 92 155  
Weighted- Average Exercise Price      
Options outstanding weighted average exercise price (in dollars per share) $ 7.04 $ 6.37  
Options exercised weighted average exercise price (in dollars per share) 5.46    
Options expired weighted average exercise price (in dollars per share) $ 4.47    
Remaining weighted average contractual life of options outstanding and exercisable (years) 2 years 3 months 10 days    
Weighted average grant-date fair value of non-vested shares (in dollars per share) $ 0.00 $ 0.00  
Weighted average grant-date fair value of shares      
Vested (in dollars per share) 0.00    
Granted (in dollars per share) $ 0.00    
Total estimated fair value of shares vested $ 0 $ 0 $ 0
Stock options exercised 963 1,296 6,914
Options outstanding and currently exercisable 1,574 $ 1,644 $ 2,713
Options currently exercisable 1,574    
Total unrecognized compensation cost, non-vested options $ 0    
Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 1 year    
Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years    
2011 Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares authorized for grant 11,400    
Prior Plans      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares authorized for grant 800