Consolidated Statements of Operations and Comprehensive Income (Loss) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Statement [Abstract]
Product sales									$ 401,039	$ 405,147	$ 432,845
Marketing service fees									46,542	36,824	29,726
Net sales	117,365	107,857	113,423	108,936	118,639	111,510	108,216	103,606	447,581	441,971	462,571
Cost of sales	24,944	24,384	27,547	21,378	27,300	23,126	22,755	22,346	98,253	95,527	97,093
Gross profit	92,421	83,473	85,876	87,558	91,339	88,384	85,461	81,260	349,328	346,444	365,478
Operating expenses
Sales and marketing									187,131	193,511	196,113
General and administrative									53,391	64,481	73,010
Research and development									28,577	22,861	27,958
Amortization of intangible assets									2,298	2,550	2,413
Charges related to U.S. Government resolutions (Note 17)									1,295	57,141
Total operating expenses	66,808	64,668	71,578	69,638	83,165	67,417	73,102	116,860	272,692	340,544	299,494
Operating income	25,613	18,805	14,298	17,920	8,174	20,967	12,359	(35,600)	76,636	5,900	65,984
Other income and (expense)
Interest expense, net									(4,743)	(5,541)	(11,287)
Other income (expense)									(1,705)	(2,412)	331
Total other income (expense)									(6,448)	(7,953)	(10,956)
Income (loss) before income taxes									70,188	(2,053)	55,028
Income tax expense									(25,138)	(14,165)	(24,031)
Net income (loss) from continuing operations, net of tax	16,009	10,574	9,870	8,597	7,652	11,300	6,579	(41,749)	45,050	(16,218)	30,997
Discontinued operations (Note 16)
Gain on sale of Breg, Inc., net of tax									1,345
Gain on sale of vascular operations, net of tax (Note 22)											8,521
Income (loss) from discontinued operations									(2,994)	(2,705)	5,089
Income tax benefit (expense)									(563)	813	(311)
Net income (loss) from discontinued operations, net of tax	5,152	(5,558)	(2,616)	810	235	(1,225)	(1,184)	282	(2,212)	(1,892)	13,299
Net income (loss)									42,838	(18,110)	44,296
Net income (loss) per common share-basic:
Net income (loss) from continuing operations, net of tax	$ 0.83	$ 0.55	$ 0.52	$ 0.46	$ 0.42	$ 0.61	$ 0.36	$ (2.33)	$ 2.37	$ (0.89)	$ 1.76
Net income (loss) from discontinued operations, net of tax	$ 0.27	$ (0.29)	$ (0.14)	$ 0.04	$ 0.01	$ (0.07)	$ (0.07)	$ 0.02	$ (0.12)	$ (0.10)	$ 0.76
Net income (loss) per common share-basic	$ 1.10	$ 0.26	$ 0.38	$ 0.50	$ 0.43	$ 0.54	$ 0.29	$ (2.31)	$ 2.25	$ (0.99)	$ 2.52
Net income (loss) per common share-diluted:
Net income (loss) from continuing operations, net of tax	$ 0.81	$ 0.54	$ 0.51	$ 0.45	$ 0.41	$ 0.60	$ 0.35	$ (2.33)	$ 2.32	$ (0.89)	$ 1.73
Net income (loss) from discontinued operations, net of tax	$ 0.26	$ (0.29)	$ (0.14)	$ 0.04	$ 0.01	$ (0.06)	$ (0.06)	$ 0.02	$ (0.11)	$ (0.10)	$ 0.74
Net income (loss) per common share-diluted:	$ 1.07	$ 0.25	$ 0.37	$ 0.49	$ 0.42	$ 0.54	$ 0.29	$ (2.31)	$ 2.21	$ (0.99)	$ 2.47
Weighted average number of common shares:
Basic									18,977,263	18,219,343	17,601,956
Diluted									19,390,413	18,219,343	17,913,545
Other comprehensive income (loss), before tax:
Translation adjustment									768	(2,279)	(1,317)
Unrealized gain (loss) on derivative instrument									416	(693)	(126)
Other comprehensive income (loss), before tax									1,184	(2,972)	(1,443)
Income tax (expense) benefit related to components of other comprehensive income	(153)				256				(153)	256	36
Other comprehensive income (loss), net of tax									1,031	(2,716)	(1,407)
Comprehensive income (loss)									$ 43,869	$ (20,826)	$ 42,889