CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues:
Product sales	$ 86,925	$ 83,066	$ 170,432	$ 168,231
Royalties, fees and other	4,349	4,113	8,774	8,062
Total revenues	91,274	87,179	179,206	176,293
Cost of product sales	25,897	28,358	50,641	54,937
Gross profit	65,377	58,821	128,565	121,356
Operating expenses:
Research and development	6,613	8,414	13,423	17,029
Sales and marketing	27,274	26,887	55,372	53,742
General and administrative	10,426	9,107	19,614	18,362
Amortization of intangible assets	1,323	1,302	2,634	2,617
Exit costs	2,490		2,490
Investigation and restatement related costs	2,257	528	3,461	1,571
Total operating expenses	50,383	46,238	96,994	93,321
Income from operations	14,994	12,583	31,571	28,035
Foreign exchange gain (loss)	78	(1,075)	742	(4,035)
Interest and other expense, net	(201)	(89)	(375)	(190)
Other income and expense	(123)	(1,164)	367	(4,225)
Income from continuing operations before income taxes	14,871	11,419	31,938	23,810
Income tax provision	4,171	3,134	8,779	6,448
Net income from continuing operations	10,700	8,285	23,159	17,362
Income (loss) from discontinued operations	1,600	(203)	1,911	(453)
Net income	12,300	8,082	25,070	16,909
Accrued dividend and accretion charges on Series A 3% Redeemable Convertible Preferred Stock	(849)	(812)	(1,689)	(1,614)
Net income available to common stockholders	$ 11,451	$ 7,270	$ 23,381	$ 15,295
Weighted average shares outstanding:
Basic (in shares)	27,338	26,976	27,267	26,958
Diluted (in shares)	27,789	27,352	27,702	27,295
Earnings per share from continuing operations applicable to common stockholders:
Basic (in dollars per share)	$ 0.30	$ 0.23	$ 0.65	$ 0.48
Diluted (in dollars per share)	$ 0.29	$ 0.22	$ 0.64	$ 0.47
Earnings per share applicable to common stockholders:
Basic (in dollars per share)	$ 0.35	$ 0.22	$ 0.71	$ 0.47
Diluted (in dollars per share)	$ 0.34	$ 0.22	$ 0.70	$ 0.46