Inventories (Tables)

6 Months Ended

Jun. 30, 2012

Inventories [Abstract]

Components of inventories

The components of inventories follow:

	June 29, 2013	December 29, 2012
Raw material and component parts	$    8,544,552	$    8,473,007
Work in process	6,230,402	6,160,578
Finished goods	14,893,629	14,751,195
	$  29,668,583	$  29,384,780