Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Compensation Expense (Details)

v3.8.0.1
Stock-Based Compensation - Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Stock-Based Compensation        
Stock-based compensation expense $ 102 $ 174 $ 409 $ 653
Cost of goods sold.        
Stock-Based Compensation        
Stock-based compensation expense   16 38 45
Research and development        
Stock-Based Compensation        
Stock-based compensation expense 4 6 16 22
Selling, general and administrative        
Stock-Based Compensation        
Stock-based compensation expense $ 98 $ 152 $ 355 $ 586