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Consolidated Condensed Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net sales	$ 186,567	$ 181,201
Cost of sales	86,682	83,461
Gross profit	99,885	97,740
Selling and administrative expense	94,761	85,943
Research and development expense	7,618	8,258
Operating expenses	102,379	94,201
Income (loss) from operations	(2,494)	3,539
Other expense	0	2,942
Interest expense	4,119	3,830
Loss before income taxes	(6,613)	(3,233)
Benefit from income taxes	(2,068)	(968)
Net loss	(4,545)	(2,265)
Comprehensive income (loss)	$ (924)	$ 787
Per share data:
Basic (in dollars per share)	$ (0.16)	$ (0.08)
Diluted (in dollars per share)	(0.16)	(0.08)
Dividends per share of common stock (in dollars per share)	$ 0.20	$ 0.20
Weighted average common shares:
Basic (shares)	27,867	27,721
Diluted (shares)	27,867	27,721

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