Segment Information - Financial Data by Segment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Net Sales	$ 194,489,991	$ 191,500,947
Less: Segment cost of sales	118,139,167	119,290,712
Less: Segment selling, general, and administrative expenses	62,210,882	59,021,618
Operating income	14,139,942	13,188,617
Interest expense	(2,083,323)	(3,096,481)
Interest income	140,680	119,317
Gain on sale of business		12,564,153
Other (expense), net	95,110	(41,002)
Income before income tax expense	12,292,409	22,734,604
Assets	162,170,586	149,241,316
Additions to property, plant and equipment	7,148,000	4,673,000
Depreciation and amortization	6,069,000	5,011,000
United States Segment
Net Sales	166,152,000	163,205,000
Less: Segment cost of sales	100,092,000	101,531,000
Less: Segment selling, general, and administrative expenses	52,815,000	50,198,000
Operating income	13,245,000	11,477,000
Assets	143,538,000	131,382,000
Additions to property, plant and equipment	6,866,000	4,626,000
Depreciation and amortization	5,663,000	4,833,000
Canada Segment
Net Sales	13,261,000	13,891,000
Less: Segment cost of sales	8,294,000	8,407,000
Less: Segment selling, general, and administrative expenses	4,269,000	4,618,000
Operating income	698,000	866,000
Assets	9,677,000	8,557,000
Additions to property, plant and equipment	197,000
Depreciation and amortization	350,000	102,000
Europe Segment
Net Sales	15,077,000	14,405,000
Less: Segment cost of sales	9,753,000	9,353,000
Less: Segment selling, general, and administrative expenses	5,127,000	4,206,000
Operating income	197,000	845,000
Assets	8,956,000	9,302,000
Additions to property, plant and equipment	85,000	47,000
Depreciation and amortization	$ 56,000	$ 76,000