Segment Information (Details) - USD ($)	3 Months Ended
Apr. 03, 2021	Mar. 28, 2020
Sales	$ 73,097,875	$ 65,325,616
Income before income taxes	7,658,091	3,778,400
Operating profit	5,934,209	3,861,271
Interest expense	(702,859)	(827,664)
Other income	2,426,741	744,793
Operating Segment [Member] \| Engineered Solutions [Member]
Sales	61,773,432	51,846,102
Income before income taxes	6,118,508	3,789,504
Operating Segment [Member] \| Diversified Products [Member]
Sales	11,324,443	13,479,514
Income before income taxes	(98,199)	71,767
Revenue [Member]
Sales	73,097,875	65,325,616
Income before income taxes	7,658,091	3,778,400
Operating profit	6,020,309	3,861,271
Interest expense	(702,859)	(827,664)
Other income	$ 2,340,641	$ 744,793

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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