CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014
Other comprehensive income/(loss):
Change in pension and postretirement benefit costs, taxes	$ 186,513	$ 100,360	$ 559,542	$ 301,078