8. Income Taxes (Details) - Schedule of Deferred Tax Assets and Liabilities (USD $)	Mar. 31, 2014	Mar. 31, 2013
Deferred tax assets:
Net operating loss carryforwards	$ 2,662,000	$ 3,086,000
Tax credits	283,000	279,000
Allowance for doubtful accounts	9,000	7,000
Reserve for inventory obsolescence	70,000	69,000
Inventory capitalization	98,000	183,000
Deferred payroll	30,000	0
Vacation accrual	91,000	95,000
Warranty reserve	66,000	100,000
Deferred revenues	58,000	2,000
Stock options	36,000	32,000
Non-compete agreement	12,000	14,000
Depreciation	(52,000)	(82,000)
Deferred tax asset	3,363,000	3,785,000
Less valuation allowance	0	1,000
Deferred tax asset, net	3,363,000	3,784,000
Deferred tax asset – current	1,089,538	1,238,421
Deferred tax asset – long-term	$ 2,273,068	$ 2,546,190