Quarterly report pursuant to Section 13 or 15(d)

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

v3.22.0.1
Stock-Based Compensation (Details-Stock-based compensation) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation $ 56 $ 93 $ 170 $ 316
Cost of Sales [Member]        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation 0 0 0 (27)
Research and Development Expense [Member]        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation 0 0 0 26
Selling, General and Administrative Expenses [Member]        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation $ 56 $ 93 $ 170 $ 317