CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (UNAUDITED) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Total revenue, net	$ 213,246	$ 210,084	$ 615,445	$ 616,439
Costs and Expenses:
Cost of goods sold	84,101	79,548	247,437	232,497
Research and development	13,052	13,105	37,577	38,148
Selling, general and administrative	95,933	93,077	295,713	276,585
Intangible asset amortization	3,036	4,618	9,660	13,985
Goodwill, Impairment Loss		0	46,738	0
Total costs and expenses	242,860	190,348	637,125	561,215
Operating income	(29,614)	19,736	(21,680)	55,224
Interest income	38	100	390	893
Interest expense	(5,316)	(5,549)	(15,081)	(20,581)
Other income (expense), net	(263)	(31)	(1,544)	(118)
Income (loss) before income taxes	(35,155)	14,256	(37,915)	35,418
Income tax (benefit) expense	(6,605)	1,045	(8,755)	7,000
Net income (loss)	(28,550)	13,211	(29,160)	28,418
Basic net income per common share (in dollars per share)	$ (1.02)	$ 0.46	$ (1.05)	$ 1.00
Diluted net income per common share (in dollars per share)	$ (1.02)	$ 0.46	$ (1.05)	$ 0.99
Weighted average common shares outstanding (See Note 11):
Basic (in shares)	27,896	28,446	27,855	28,403
Diluted (in shares)	27,896	28,777	27,855	28,629
Comprehensive income (loss) (See Note 12)	$ (19,860)	$ 17,106	$ (25,076)	$ 28,016