CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)	3 Months Ended
	Mar. 29, 2025	Mar. 30, 2024
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)
Net sales	$ 63,312,774	$ 64,624,238
Cost of products sold	(49,125,302)	(49,170,711)
Gross margin	14,187,472	15,453,527
Product development expense	(1,109,186)	(1,359,797)
Selling and administrative expenses	(9,847,121)	(10,683,652)
Operating profit	3,231,165	3,410,078
Interest expense	(617,470)	(676,028)
Other (expense) income	(199,705)	9,996
Income before income taxes from continuing operations	2,413,990	2,744,046
Income tax expense	(507,179)	(608,629)
Net income from continuing operations	1,906,811	2,135,417
Discontinued Operations (see note B)
Income (Loss) from operations of discontinued unit	46,687	(241,382)
Income tax benefit (expense)	(9,809)	53,537
Income (Loss) on discontinued operations	36,878	(187,845)
Net Income	$ 1,943,689	$ 1,947,572
Earnings per share from continuing operations:
Earnings per share from continuing operations: Basic	$ 0.31	$ 0.34
Earnings per share from continuing operations: Diluted	0.31	0.34
Earnings (Loss) per share from discontinued operations:
Loss per share from discontinued operations: Basic	0.01	(0.03)
Loss per share from discontinued operations: Diluted	0.01	(0.03)
Total earnings per share:
Total (loss) earnings per share: Basic	0.32	0.31
Total (loss) earnings per share: Diluted	0.32	0.31
Cash dividends per share:	$ 0.11	$ 0.11