7. Income Taxes (Details) - Schedule of Deferred Tax Assets and Liabilities - USD ($)	Mar. 31, 2017	Mar. 31, 2016
Deferred tax assets:
Net operating loss carryforwards	$ 1,645,868	$ 1,802,492
Tax credits	329,032	329,032
Charitable contributions	102	51
Legal damages	956,000	0
Allowance for doubtful accounts	2,561	2,550
Reserve for inventory obsolescence	112,671	98,614
Inventory capitalization	105,998	69,918
Deferred payroll	0	88,288
Vacation accrual	133,276	134,116
Warranty reserve	64,340	70,765
Deferred revenues	162,757	75,310
Stock options	25,494	23,544
Non-compete agreement	5,941	7,889
AMT credit	66,106	52,123
Depreciation	18,412	26,721
Deferred tax asset	3,628,558	2,781,413
Less valuation allowance	(3,628,558)	(137,780)
Deferred tax asset, net	$ 0	$ 2,643,633