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Consolidated Condensed Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net sales	$ 157,785	$ 238,263	$ 371,796	$ 456,641
Cost of sales	85,856	107,073	180,707	204,013
Gross profit	71,929	131,190	191,089	252,628
Selling and administrative expense	84,475	100,726	180,343	199,952
Research and development expense	8,700	11,806	18,820	22,381
Operating expenses	93,175	112,532	199,163	222,333
Income (loss) from operations	(21,246)	18,658	(8,074)	30,295
Interest expense	11,401	11,839	20,993	21,208
Other expense	89	321	178	4,546
Income (loss) before income taxes	(32,736)	6,498	(29,245)	4,541
Provision (benefit) for income taxes	(5,336)	803	(7,772)	(2,175)
Net income (loss)	(27,400)	5,695	(21,473)	6,716
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ (24,713)	$ 5,751	$ (25,834)	$ 6,847
Per share data:
Basic (in dollars per share)	$ (0.96)	$ 0.20	$ (0.75)	$ 0.24
Diluted (in dollars per share)	$ (0.96)	$ 0.19	$ (0.75)	$ 0.23
Weighted average common shares:
Basic (shares)	28,542	28,276	28,506	28,228
Diluted (shares)	28,542	29,337	28,506	29,197

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-URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1448-109256

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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