Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 7,785,323	$ 5,727,043	$ 7,661,476
Other comprehensive income/(loss) -
Change in foreign currency translation	(1,010,983)	(2,009,277)	(1,128,327)
Change in pension and other postretirement benefit costs, net of taxes (expense)/benefit	(1,110,306)	3,458,060	(10,386,089)
Total other comprehensive income/(loss)	(931,548)	1,448,783	(11,514,416)
Comprehensive income/(loss)	$ 5,664,034	$ 7,175,826	$ (3,852,940)