4. BALANCE SHEET DETAIL - Property and equipment, net (Details) - USD ($)	3 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Mar. 31, 2025
Property and equipment, net:
Property and equipment, gross	$ 23,192,000		$ 23,188,000
Less: Accumulated depreciation	(22,470,000)		(22,380,000)
Total property and equipment, net	722,000		808,000
Depreciation	90,000	$ 134,000
Computer and other equipment
Property and equipment, net:
Property and equipment, gross	17,737,000		17,733,000
Software
Property and equipment, net:
Property and equipment, gross	4,426,000		4,426,000
Furniture and fixtures
Property and equipment, net:
Property and equipment, gross	102,000		102,000
Leasehold improvements
Property and equipment, net:
Property and equipment, gross	$ 927,000		$ 927,000