CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)
Net income	$ 1,399,207	$ 4,036,615	$ 2,006,521	$ 7,067,053
Other comprehensive (loss) income:
Change in foreign currency translation	(431,042)	(1,173,177)	(94,457)	(970,896)
Change in fair value of interest rate swap, net of tax (benefit) cost of: 2023 - $(274,957) and $(362,648) respectively; 2022 - $93,659 and $427,294 respectively	(1,172,067)	296,588	(1,449,754)	1,353,099
Change in pension and postretirement benefit costs, net of taxes of: 2023 - $74,359 and $148,719 respectively; 2022 - $92,235 and $184,470 respectively	252,670	313,409	505,338	626,817
Total other comprehensive (loss) income	(1,350,439)	(563,180)	(1,038,873)	1,009,020
Comprehensive income	$ 48,768	$ 3,473,435	$ 967,648	$ 8,076,073