3. BALANCE SHEET DETAIL - Property, Plant and Equipment (Details) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Property and equipment, net:
Property and equipment, gross	$ 31,351,000		$ 29,940,000
Less: Accumulated depreciation	(22,019,000)		(21,768,000)
Property, Plant and Equipment, Net, Total	9,332,000		8,172,000
Depreciation	251,000	$ 228,000
Computer and other equipment
Property and equipment, net:
Property and equipment, gross	18,926,000		17,845,000
Software
Property and equipment, net:
Property and equipment, gross	4,072,000		4,072,000
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	3,306,000		2,310,000
Furniture and fixtures
Property and equipment, net:
Property and equipment, gross	102,000		82,000
Leasehold improvements
Property and equipment, net:
Property and equipment, gross	815,000		766,000
Construction in progress
Property and equipment, net:
Property and equipment, gross	$ 230,000		$ 965,000