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CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net sales	$ 28,413	$ 29,948
Cost of goods sold	18,910	20,262
Gross profit	9,503	9,686
Selling, general and administrative expense	5,130	5,162
Operating income	4,373	4,524
Interest income	572	335
Income before taxes	4,945	4,859
Provision for income taxes	1,219	1,708
Net income	$ 3,726	$ 3,151
Basic and diluted net income per common share	$ 0.30	$ 0.25
Cash dividends per share	$ 0.05	$ 0.05
Basic and diluted weighted average shares outstanding	12,426	12,419

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

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