CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($)	3 Months Ended	9 Months Ended
Oct. 03, 2020	Sep. 28, 2019	Oct. 03, 2020	Sep. 28, 2019
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)
Net income (loss)	$ 2,984,675	$ 4,193,082	$ 3,991,709	$ 8,293,815
Change in foreign currency translation	277,618	537,751	248,786	346,657
Change in marketable securities, net of tax benefit (cost) of: 2020 - $679 and $(2,063) respectively, 2019 - $3,008 and $(463) respectively	489	538	5,836	882
Change in fair value of interest rate swap, net of tax benefit (cost) of: 2020 - $48,169 and $582,673 respectively, 2019 - $69,817 and $45,197 respectively	112,691	49,780	1,734,606	270,866
Change in pension and postretirement benefit costs, net of taxes of: 2020 - $81,142 and $162,285 respectively, 2019 - $141,876 and $70,938 respectively	260,295	235,859	780,886	681,221
Total other comprehensive income (loss)	651,093	351,134	1,208,342	62,816
Comprehensive income (loss)	$ 3,635,768	$ 3,841,948	$ 2,783,367	$ 8,356,631

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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