Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Net sales	$ 243,007	$ 255,927	$ 202,643
Cost of products sold	215,369	218,111	179,609
Gross margin	27,638	37,816	23,034
Selling, general and administrative expenses	20,347	21,746	18,797
Operating income	7,291	16,070	4,237
Interest expense and other financing costs	3,992	4,302	4,277
Other (income), net	(474)	(829)	(49)
Income before income taxes	3,773	12,597	9
(Benefit) provision for income taxes	(502)	1,935	(7,601)
Net income	$ 4,275	$ 10,662	$ 7,610
Basic earnings per share	$ 0.49	$ 1.31	$ 1.05
Diluted earnings per share	$ 0.48	$ 1.28	$ 1.03
Weighted average shares of common stock outstanding
Basic	8,778,753	8,132,632	7,225,697
Diluted	8,873,719	8,347,692	7,374,805