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4. BALANCE SHEET DETAIL - Property and equipment, net (Details) - USD ($)	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Property and equipment, net:
Property and equipment, gross	$ 31,070,000	$ 30,888,000
Less: Accumulated depreciation	(23,742,000)	(22,769,000)
Total property and equipment, net	7,328,000	8,119,000
Depreciation	981,000	1,200,000	$ 1,200,000
Computer and other equipment
Property and equipment, net:
Property and equipment, gross	18,359,000	18,191,000
Software
Property and equipment, net:
Property and equipment, gross	4,097,000	4,086,000
Land
Property and equipment, net:
Property and equipment, gross	3,900,000	3,900,000
Building and building improvements
Property and equipment, net:
Property and equipment, gross	3,735,000	3,735,000
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	$ 877,000	$ 874,000

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- 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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