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Consolidated Condensed Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net sales	$ 181,201	$ 177,940
Cost of sales	83,461	85,658
Gross profit	97,740	92,282
Selling and administrative expense	85,943	74,786
Research and development expense	8,258	6,542
Total operating expenses	94,201	81,328
Income from operations	3,539	10,954
Other expense	2,942	0
Interest expense	3,830	1,460
Income (loss) before income taxes	(3,233)	9,494
Provision (benefit) for income taxes	(968)	3,182
Net income (loss)	(2,265)	6,312
Comprehensive income (loss)	$ 787	$ (3,715)
Per share data:
Basic (in dollars per share)	$ (0.08)	$ 0.23
Diluted (in dollars per share)	(0.08)	0.23
Dividends per share of common stock (in dollars per share)	$ 0.20	$ 0.20
Weighted average common shares:
Basic (shares)	27,721	27,573
Diluted (shares)	27,721	27,820

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