v3.26.1
6. INCOME TAXES (Details) - USD ($)
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
INCOME TAXES      
Deferred tax liabilities, undistributed foreign earnings $ 0    
Deferred tax assets unrecognized tax benefit 3,500,000 $ 3,400,000  
Unrecognized tax benefits, noncurrent 0    
Tax effect, Global intangible low-taxed income 0    
Deferred tax assets, net 25,700,000 22,800,000  
Less valuation allowance (25,384,000) (22,794,000)  
Valuation allowance, increase 2,600,000 2,600,000  
Net deferred tax asset 311,000    
Net deferred tax liability   16,000  
Unrecognized Tax Benefits      
Unrecognized tax benefits, beginning of period 3,356,000 3,948,000 $ 3,723,000
Lapses of applicable statutes of limitations   (767,000)  
Additions based on tax positions related to current year 149,000 175,000 225,000
Unrecognized tax benefits, end of period 3,505,000 $ 3,356,000 $ 3,948,000
Federal      
INCOME TAXES      
Net operating loss carryforwards for income tax purposes 27,800,000    
Tax credit carryforwards for income tax purposes 5,900,000    
State      
INCOME TAXES      
Net operating loss carryforwards for income tax purposes 26,800,000    
Tax credit carryforwards for income tax purposes $ 6,200,000