INVENTORIES - NET - Table of components of inventories (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Raw materials	$ 528,754	$ 659,149
Finished goods	211,561	334,026
Offsite demo equipment	96,566	96,566
Less inventory reserve	(204,160)	(163,505)
Total inventories - net	$ 632,721	$ 926,236

The amount of the valuation account as of the balance sheet date which reduces the carrying amount of inventory to net realizable value; takes into consideration such factors as market value, excessive quantities based on expected sales, technological obsolescence, and shrinkage. May also provide for estimated product returns or price concessions pertaining to product cost.

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