CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Net sales	$ 30,002	$ 27,107	$ 59,950	$ 54,182
Cost of goods sold	20,494	18,621	40,756	37,491
Gross profit	9,508	8,486	19,194	16,691
Selling, general and administrative expense	4,907	4,769	10,068	9,621
Operating income	4,601	3,717	9,126	7,070
Interest income	482	41	817	73
Income before taxes	5,083	3,758	9,943	7,143
Provision for income taxes	1,780	1,320	3,489	2,505
Net income	$ 3,303	$ 2,438	$ 6,454	$ 4,638
Basic and diluted net income per common share	$ 0.27	$ 0.20	$ 0.52	$ 0.37
Cash dividends per share	$ 0.05	$ 0.05	$ 0.10	$ 0.10
Basic and diluted weighted average shares outstanding	12,422	12,415	12,421	12,413

Aggregate dividends paid during the period for each share of common stock outstanding.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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