CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Oct. 02, 2021	Oct. 03, 2020
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)
Net sales	$ 63,876,906	$ 55,705,597	$ 186,897,930	$ 147,059,497
Cost of products sold	(48,661,374)	(42,315,555)	(142,196,527)	(110,427,295)
Gross margin	15,215,532	13,390,042	44,701,403	36,632,202
Product development expense	(962,924)	(556,469)	(3,068,866)	(2,395,932)
Selling and administrative expenses	(9,440,583)	(8,536,752)	(27,760,514)	(23,289,068)
Operating profit	4,812,025	4,296,821	13,872,023	10,947,202
Interest expense	(427,222)	(485,300)	(1,388,512)	(1,560,962)
Other income	407,192	365,701	3,359,065	969,023
Income from continuing operations before income taxes	4,791,995	4,177,222	15,842,576	10,355,263
Income taxes	(971,884)	(1,021,607)	(3,573,308)	(2,476,640)
Net income from continuing operations	3,820,111	3,155,615	12,269,268	7,878,623
Discontinued Operations (see note B )
Gain (loss) from operations of discontinued units	1,492,063	(222,773)	2,831,530	(5,054,259)
Gain (loss) on classification as held for sale	1,308,639	0	(9,274,439)	0
Income tax (expense) benefit	(659,285)	51,833	1,516,661	1,167,345
Gain (loss) on discontinued operations	2,141,417	(170,940)	(4,926,248)	(3,886,914)
Net income	$ 5,961,528	$ 2,984,675	$ 7,343,020	$ 3,991,709
Earnings per share from continuing operations:
Basic	$ 0.61	$ 0.51	$ 1.96	$ 1.26
Diluted	0.61	0.51	1.96	1.26
Earnings (loss) per share from discontinued operations:
Basic	0.34	(0.03)	(0.79)	(0.62)
Diluted	0.34	(0.03)	(0.79)	(0.62)
Total earnings per share:
Basic	0.95	0.48	1.17	0.64
Diluted	0.95	0.48	1.17	0.64
Cash dividends per share:	$ 0.11	$ 0.11	$ 0.33	$ 0.33