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 6 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Stock-Based Compensation        
Share based compensation expenses $ 153 $ 241 $ 307 $ 479
Cost of goods sold.        
Stock-Based Compensation        
Share based compensation expenses 18 14 38 29
Research and development        
Stock-Based Compensation        
Share based compensation expenses 5 13 12 16
Selling, general and administrative        
Stock-Based Compensation        
Share based compensation expenses $ 130 $ 214 $ 257 $ 434