CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (USD $)	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) [Abstract]
Net income	$ 2,431,817	$ 1,798,783	$ 5,628,205	$ 4,978,325
Other comprehensive income/(loss):
Change in foreign currency translation	(444,848)	199,495	(497,620)	(337,367)
Change in pension and postretirement benefit costs, net of taxes of: 2014 - $100,360 and $301,078, respectively 2013 - $149,033 and $442,866, respectively	184,348	272,919	553,043	811,003
Total other comprehensive income/(loss)	(260,500)	472,414	55,423	473,636
Comprehensive income	$ 2,171,317	$ 2,271,197	$ 5,683,628	$ 5,451,961