Inventories (Tables)

6 Months Ended

Jun. 30, 2012

Inventories [Abstract]

Components of inventories

The components of inventories follow:

	June 30, 2012		December 31, 2011
Raw material and component parts	$	11,761,257	$	11,863,199
Work in process		6,382,994		6,425,914
Finished goods		11,406,647		11,504,321
	$	29,550,898	$	29,793,434