CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (USD $)	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) [Abstract]
Net income	$ 1,798,783	$ 2,223,975	$ 4,978,325	$ 6,901,929
Other comprehensive income/(loss):
Change in foreign currency translation	199,495	554,596	(337,367)	606,529
Change in pension and postretirement benefit costs, net of taxes of: 2013 - $442,866 and $149,033, respectively 2012 - $308,343 and $112,154, respectively	272,919	206,013	811,003	566,390
Total other comprehensive income	472,414	760,609	473,636	1,172,919
Comprehensive income	$ 2,271,197	$ 2,984,584	$ 5,451,961	$ 8,074,848