Property and Equipment (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Property, equipment, and leasehold improvements, at cost:
Equipment	$ 15,344	$ 13,754
Machinery and equipment	3,759,994	2,611,933
Purchased software	145,623	129,753
Furniture and fixtures	13,090	13,090
Subtotal - property and equipment, at cost	3,934,051	2,768,530
Less accumulated depreciation	(910,920)	(763,315)
Net property and leasehold improvements	$ 3,023,131	$ 2,005,215