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4. BALANCE SHEET DETAIL - Property and equipment, net (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Mar. 31, 2023
Property and equipment, net:
Property and equipment, gross	$ 31,931,000		$ 31,931,000		$ 32,269,000
Less: Accumulated depreciation	(24,871,000)		(24,871,000)		(24,846,000)
Total property and equipment, net	7,060,000		7,060,000		7,423,000
Depreciation	172,000	$ 196,000	388,000	$ 393,000
Computer and other equipment
Property and equipment, net:
Property and equipment, gross	18,842,000		18,842,000		19,188,000
Software
Property and equipment, net:
Property and equipment, gross	4,428,000		4,428,000		4,428,000
Land
Property and equipment, net:
Property and equipment, gross	3,900,000		3,900,000		3,900,000
Building and building improvements
Property and equipment, net:
Property and equipment, gross	3,741,000		3,741,000		3,741,000
Furniture and fixtures
Property and equipment, net:
Property and equipment, gross	102,000		102,000		102,000
Leasehold improvements
Property and equipment, net:
Property and equipment, gross	$ 918,000		$ 918,000		$ 910,000

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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