3. BALANCE SHEET DETAIL - Intangible assets (Details) - USD ($)	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Gross Carrying Amount	$ 4,890,000	$ 4,890,000
Accumulated Amortization	(1,588,000)	(1,239,000)
Net Carrying Amount	3,302,000	3,651,000
Amortization of intangible assets	349,000	242,000	$ 171,000
Product designs
Gross Carrying Amount	590,000	590,000
Accumulated Amortization	(590,000)	(555,000)
Net Carrying Amount		35,000
Patents
Gross Carrying Amount	4,220,000	4,220,000
Accumulated Amortization	(918,000)	(604,000)
Net Carrying Amount	3,302,000	3,616,000
Software.
Gross Carrying Amount	80,000	80,000
Accumulated Amortization	$ (80,000)	$ (80,000)