Net income (loss) per share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Schedule of Net Income per Share, Basic and Diluted

The following table presents the calculations of basic and diluted net income (loss) per share:

	Year ended December 31,
(in thousands, except per share data)	2016			2015		2014
Numerator:
Allocation of net income (loss)	$	(419,003	)	$	36,131	$	128,088
Less: net income allocable to participating securities	—			—		16,512
Net income (loss) attributable to common stockholders—basic	(419,003		)	36,131		111,576
Add: net income allocable to dilutive participating securities	—			—		2,277
Net income (loss) attributable to common stockholders—diluted	$	(419,003	)	$	36,131	$	113,853
Denominator:
Weighted-average common shares—basic for Class A and Class B common stock	139,425			134,595		104,453
Stock options, RSU's and ESPP shares	—			11,891		19,177
Weighted-average common shares—diluted for Class A and Class B common stock	139,425			146,486		123,630
Net income (loss) per share attributable to common stockholders:
Basic	$	(3.01	)	$	0.27	$	1.07
Diluted	$	(3.01	)	$	0.25	$	0.92

Schedule of Antidilutive Securities Excluded from Computation of Net Income per Share

The following potentially dilutive shares were not included in the calculation of diluted shares outstanding as the effect would have been anti-dilutive:

	Year ended December 31,
(in thousands)	2016	2015	2014
Stock options, RSUs and ESPP shares	21,000	2,681	15,921