Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Data

Schedule of quarterly financial data

		Three months ended
		December 31,		September 30,		June 30,		March 31,
		(in thousands, except per share data)
2017
Operating results:
Total revenues	$	53,765	$	56,656	$	53,617	$	46,901
Cost of product revenues		35,153		33,558		33,709		33,088
Cost of licensing and other revenues		1,572		1,054		850		612
Gross profit		17,040		22,044		19,058		13,201
Operating expenses		61,956		47,087		46,095		50,232
Interest expense and other income (expense), net		(405)		(1,914)		(631)		1,117
Income tax expense		(181)		(162)		(64)		(47)
Net loss	$	(45,502)	$	(27,119)	$	(27,732)	$	(35,961)
Per share data:
Net loss - basic	$	(0.84)	$	(0.51)	$	(0.52)	$	(0.68)
Net loss - diluted	$	(0.87)	$	(0.51)	$	(0.52)	$	(0.70)
2016
Operating results:
Total revenues	$	49,299	$	53,889	$	51,984	$	61,902
Cost of product revenues		37,420		33,761		30,973		32,340
Cost of licensing and other revenues		580		500		—		—
Gross profit		11,299		19,628		21,011		29,562
Operating expenses		49,012		46,283		43,526		39,167
Interest expense and other income (expense), net		(155)		741		(641)		920
Income tax expense		(39)		(103)		—		—
Net loss	$	(37,907)	$	(26,017)	$	(23,156)	$	(8,685)
Per share data:
Net loss - basic	$	(0.72)	$	(0.50)	$	(0.46)	$	(0.17)
Net loss - diluted	$	(0.72)	$	(0.50)	$	(0.46)	$	(0.17)