3. BALANCE SHEET DETAIL - Property, Plant and Equipment (Details) - USD ($)	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Property and equipment, net:
Property and equipment, gross	$ 29,940,000	$ 30,360,000
Less: Accumulated depreciation	(21,768,000)	(22,671,000)
Property, Plant and Equipment, Net, Total	8,172,000	7,689,000
Depreciation	934,000	1,200,000	$ 1,200,000
Computer and other equipment
Property and equipment, net:
Property and equipment, gross	17,845,000	18,585,000
Software
Property and equipment, net:
Property and equipment, gross	4,072,000	4,793,000
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	2,310,000	2,256,000
Furniture and fixtures
Property and equipment, net:
Property and equipment, gross	82,000	111,000
Leasehold improvements
Property and equipment, net:
Property and equipment, gross	766,000	$ 715,000
Construction in progress
Property and equipment, net:
Property and equipment, gross	$ 965,000