Annual report pursuant to section 13 and 15(d)

Inventories (Detail)

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Inventories (Detail) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Schedule of Inventory [Line Items]    
Raw materials $ 1,552,267 $ 1,708,642
Finished goods 2,693,439 2,163,820
Gross inventories 4,245,706 3,872,462
Less reserve for obsolescence inventory reserve (1,669,253) (895,415)
Net inventories $ 2,576,453 $ 2,977,047