QUARTERLY FINANCIAL INFORMATION (unaudited)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

QUARTERLY FINANCIAL INFORMATION (unaudited)

The following tables present certain unaudited condensed consolidated quarterly financial information for each quarter in the years ended December 31, 2013 and 2012. In the Company's opinion, this unaudited quarterly information has been prepared on the same basis as the consolidated financial statements and includes all adjustments necessary to state fairly the information for the periods presented (in thousands, except per share data).

	Year Ended December 31, 2013
	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Revenues:
Product sales	$	87,478		$	87,470		$	87,060		$	96,556
Royalties, fees and other	4,870			4,600			4,803			5,152
Total revenues	92,348			92,070			91,863			101,708
Cost of product sales	28,328			28,724			28,876			30,336
Gross profit	64,020			63,346			62,987			71,372
Operating expenses:
Research and development	8,445			8,659			8,433			8,428
Sales and marketing	30,332			30,218			29,322			32,723
General and administrative	7,458			8,683			8,785			8,537
Amortization of intangible assets	423			505			534			534
Exit costs	—			—			—			695
Investigation and restatement-related costs	3,893			26,335			3,164			3,654
Total operating expenses	50,551			74,400			50,238			54,571
Income (loss) from operations	13,469			(11,054		)	12,749			16,801
Interest and other income (expense), net	522			(392		)	(28		)	(952		)
Income (loss) from operations before income taxes	13,991			(11,446		)	12,721			15,849
Income tax provision (benefit)	2,806			(4,667		)	2,449			4,471
Net income (loss) from operations	11,185			(6,779		)	10,272			11,378
Accrued dividend and accretion charges on Series A 3% Redeemable Convertible Preferred Stock	(919		)	(929		)	(940		)	(947		)
Net income (loss) attributable to common stockholders	10,266			(7,708		)	9,332			10,431
Other comprehensive income
Foreign currency translation adjustments	(1,099		)	(344		)	1,131			133
Total comprehensive income (loss)	$	10,086		$	(7,123	)	$	11,403		$	11,511
Weighted-average shares outstanding:
Basic	28,055			28,081			28,374			28,480
Diluted	28,785			28,722			28,968			29,160
Earnings (loss) per share applicable to common stockholders:
Basic	$	0.31		$	(0.27	)	$	0.27		$	0.30
Diluted	$	0.30		$	(0.27	)	$	0.27		$	0.30

	Year Ended December 31, 2012
	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Revenues:
Product sales	$	88,375		$	87,471		$	82,602		$	92,223
Royalties, fees and other	4,497			4,235			4,338			4,713
Total revenues	92,872			91,706			86,940			96,936
Cost of product sales	26,651			27,355			26,204			27,741
Gross profit	66,221			64,351			60,736			69,195
Operating expenses:
Research and development	7,594			7,899			8,184			8,469
Sales and marketing	30,200			28,842			27,175			29,910
General and administrative	8,488			8,154			8,191			8,379
Amortization of intangible assets	1,321			1,316			1,363			857
Exit costs	160			(938		)	—			—
Investigation and restatement-related costs	1,093			1,131			2,139			6,442
Total operating expenses	48,856			46,404			47,052			54,057
Income from operations	17,365			17,947			13,684			15,138
Interest and other income (expense), net	386			(1,147		)	183			151
Income from operations before income taxes	17,751			16,800			13,867			15,289
Income tax provision	4,793			4,536			3,882			4,118
Net income from operations	12,958			12,264			9,985			11,171
Accrued dividend and accretion charges on Series A 3% Redeemable Convertible Preferred Stock	(879		)	(887		)	(900		)	(909		)
Net income attributable to common stockholders	$	12,079		$	11,377		$	9,085		$	10,262
Other comprehensive income
Foreign currency translation adjustments	392			(778		)	951			120
Total comprehensive income	$	13,350		$	11,486		$	10,936		$	11,291
Weighted-average shares outstanding:
Basic	27,614			27,639			27,714			27,912
Diluted	27,987			27,934			28,087			28,341
Earnings per share applicable to common stockholders:
Basic	$	0.36		$	0.34		$	0.27		$	0.30
Diluted	$	0.36		$	0.34		$	0.27		$	0.30