Established to Offset Deferred Tax Assets (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Deferred Tax Assets, Gross [Abstract]
Excess of financial accounting over tax depreciation	$ 54,000	$ 51,954
State income tax benefits	2,166,000	1,985,066
Net operating loss carryforward	12,181,000	11,488,759
Allowance for obsolete inventory	0	12,469
Allowance for bad debts, returns and discounts	0	31,316
Warranty expense	12,000	11,949
Derivative liability expense	878,000	1,068,323
Research and development credit carryforwards	538,000	591,601
Patent amortization	(603,000)	(668,661)
Vacation accrual	3,000	19,976
Other	(356,200)	(28,060)
Valuation reserve	(14,872,800)	(14,564,692)
Net deferred tax asset	$ 0	$ 0