Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 5,045,255	$ 7,785,323	$ 5,727,043
Other comprehensive income/(loss) -
Change in foreign currency translation	1,221,888	(1,010,983)	(2,009,277)
Change in fair value of interest rate swap, net of tax benefit of: $7,310	41,757	0	0
Change in pension and other postretirement benefit costs, net of income taxes (expense)/benefit of: $62,632 in 2017, ($543,297) in 2016 and $1,899,285 in 2015	554,243	(1,110,306)	3,458,060
Total other comprehensive income/(loss)	1,817,888	(931,548)	1,448,783
Comprehensive income/(loss)	$ 6,863,143	$ 5,664,034	$ 7,175,826