Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventories [Abstract]

Components of inventories

	March 31, 2013			December 31, 2012
Raw materials	$	1,491,999		$	1,685,493
Work in process		2,973,169			2,602,990
Finished goods		2,325,540			1,745,052
		6,790,708			6,033,535
Less: reserve for obsolete inventory		(136,727	)		(135,980	)
	$	6,653,981		$	5,897,555