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Inventories (Details) - Inventories (USD $)	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
Inventories [Abstract]
Raw materials	$ 118,765	$ 158,316	$ 167,765
Work in process	156,741	179,314	191,450
Finished goods	241,538	157,856	385,793
Inventories, net	$ 517,044	$ 495,486	$ 745,008

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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