Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Consolidated Statements of Operations Information for Each of Previous Eight Quarters

	December 31, 2016			September 30, 2016			June 30, 2016			March 31, 2016			December 31, 2015			September 30, 2015			June 30, 2015			March 31, 2015
	(in thousands, except per share amounts)
Revenue:
Product revenue	$	25,500		$	24,677		$	29,170		$	25,094		$	21,449		$	19,814		$	21,457		$	20,816
Royalty and other revenue		100			—			—			—			—			—			—			—
Total revenue		25,600			24,677			29,170			25,094			21,449			19,814			21,457			20,816
Operating expenses:
Cost of product revenue		12,162			11,242			12,644			11,069			10,148			8,444			8,586			8,073
Cost of royalty and other revenue		—			—			—			—			—			—			—			—
Research and development		2,040			1,886			1,890			1,539			1,431			1,490			1,252			1,568
Selling, general and administrative		8,568			7,127			8,140			7,018			6,473			5,959			6,242			6,024
Contingent consideration – fair value adjustments		(75	)		675			637			2,005			1,969			233			768			1,112
Total operating expenses		22,695			20,930			23,311			21,631			20,021			16,126			16,848			16,777
Income from operations		2,905			3,747			5,859			3,463			1,428			3,688			4,609			4,039
Investment income		112			97			76			61			44			37			19			36
Interest expense		(1,570	)		(1,555	)		(638	)		(5	)		(8	)		(8	)		(8	)		(9	)
Other income (expense)		119			(75	)		75			(979	)		(270	)		(38	)		(269	)		132
Income before income taxes		1,566			2,214			5,372			2,540			1,194			3,679			4,351			4,198
Income tax provision (benefit)		3,463			1,059			1,500			915			929			1,141			738			1,269
Net income (loss)	$	5,029		$	1,155		$	3,872		$	1,625		$	265		$	2,538		$	3,613		$	2,929
Earnings per share:
Basic	$	0.15		$	0.03		$	0.12		$	0.05		$	0.01		$	0.08		$	0.11		$	0.09
Diluted	$	0.15		$	0.03		$	0.11		$	0.05		$	0.01		$	0.08		$	0.11		$	0.09
Weighted average shares outstanding:
Basic		33,833			33,779			33,649			33,025			32,946			32,925			32,870			32,755
Diluted		34,369			34,313			34,175			33,494			33,577			33,690			33,671			33,451