Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020		Sep. 30, 2021	Sep. 30, 2020
Net sales	$ 50,723	$ 43,299	[1]	$ 149,977	$ 134,220	[1]
Cost of sales	38,707	32,771		111,938	100,919
Gross profit	12,016	10,528		38,039	33,301
Selling, general & administrative expenses	6,806	6,791		21,343	21,208
Acquisition Costs	154	0		154	0
(Gain) loss on sale of property, plant & equipment	(21)	12		(42)	298
Operating income	5,077	3,725		16,584	11,795
Interest (income) expense, net	16	17		11	66
Other expenses (income)	4	0		(2)	362
Income before income tax expense	5,057	3,708		16,575	11,367
Income tax expense	1,268	720		3,908	2,170
Net income	$ 3,789	$ 2,988		$ 12,667	$ 9,197
Net income per share:
Basic (in dollars per share)	$ 0.50	$ 0.40		$ 1.68	$ 1.23
Diluted (in dollars per share)	$ 0.50	$ 0.40		$ 1.67	$ 1.22
Weighted average common shares outstanding:
Basic (in shares)	7,531	7,495		7,522	7,480
Diluted (in shares)	7,597	7,555		7,585	7,547

[1] Certain amounts for the three and nine months ended September 30, 2021 were reclassified between markets to conform to the current period presentation.