7. Income Taxes (Details) - Schedule of Deferred Tax Assets and Liabilities (USD $)	Mar. 31, 2013	Mar. 31, 2012
Deferred tax assets:
Net operating loss carryforwards	$ 3,086,000	$ 1,761,000
Tax credits	279,000	239,000
Allowance for doubtful accounts	7,000	13,000
Reserve for inventory obsolescence	69,000	72,000
Inventory capitalization	183,000	92,000
Deferred payroll and accrued interest	0	16,000
Vacation accrual	95,000	96,000
Warranty reserve	100,000	97,000
Deferred revenues	2,000	9,000
Stock options	32,000	29,000
Non-compete agreement	14,000	17,000
Depreciation	(82,000)	(154,000)
Deferred tax asset	3,785,000	2,287,000
Less valuation allowance	1,000	50,000
Deferred tax asset, net	3,784,000	2,237,000
Deferred tax asset – current	1,238,421	1,288,631
Deferred tax asset – long-term	$ 2,546,190	$ 948,489