XML 63 R54.htm IDEA: XBRL DOCUMENT v3.22.0.1
10. STOCK-BASED COMPENSATION - Stock-based compensation expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Stock-based compensation expense by line item        
Stock-based compensation expense $ 740 $ 693 $ 2,279 $ 2,101
Cost of revenues        
Stock-based compensation expense by line item        
Stock-based compensation expense 58 88 192 260
Research and development        
Stock-based compensation expense by line item        
Stock-based compensation expense 416 343 1,304 1,109
Selling, general and administrative        
Stock-based compensation expense by line item        
Stock-based compensation expense $ 266 $ 262 $ 783 $ 732