Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details-Stock-based compensation)

v3.21.2
Stock-Based Compensation (Details-Stock-based compensation) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation $ 55 $ 160 $ 114 $ 223
Cost of Sales [Member]        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation 0 (6) 0 (27)
Research and Development Expense [Member]        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation 0 40 0 26
Selling, General and Administrative Expenses [Member]        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation $ 55 $ 126 $ 114 $ 224