Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Other comprehensive income/(loss) -
Change in pension and postretirement benefit costs, taxes (expense) benefit	$ (3,437,175)	$ 2,053,255	$ 2,507,762