Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Grants outside of 2000 Plan (Details)

v3.7.0.1
Stock-Based Compensation - Grants outside of 2000 Plan (Details) - shares
3 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Mar. 31, 2017
Stock options      
Class of Stock      
Options outstanding (in shares) 312,037   314,537
Granted (in shares) 0 0  
Stock options | Non-qualified stock options      
Class of Stock      
Portion vesting one year after the issuance date (as a percent) 25.00%    
Vesting period after one year of grant 1 year    
Vesting period of awards after issuance date 48 months    
Portion vesting on first day of each month after one year from the issuance date (as a percent) 2.083%    
Vesting period 4 years    
Expiration Term 10 years    
Stock options | Non-qualified stock options | Vice President, Manufacturing      
Class of Stock      
Options outstanding (in shares) 88,930    
Restricted stock units | Vice President, Manufacturing      
Class of Stock      
Restricted stock units outstanding (in shares) 14,820