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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net sales	$ 95,962	$ 99,676
Cost of sales	57,581	57,974
Gross profit	38,381	41,702
Operating expenses	36,545	34,800
Operating income	1,836	6,902
Interest expense, net	1,508	1,612
Income before provision for income taxes (benefit) and loss on equity method investment	328	5,290
Income tax (benefit) expense	(205)	1,360
Income before loss on equity method investment	533	3,930
Loss from equity method investment	13	24
Net income	$ 520	$ 3,906
Earnings per common share—basic	$ 0.02	$ 0.13
Earnings per common share—assuming dilution	$ 0.02	$ 0.13
Weighted average shares outstanding—basic	29,288	28,977
Weighted average shares outstanding—assuming dilution	29,948	29,579

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