15. Net Income Per Share (Tables)

6 Months Ended

Jun. 30, 2014

Schedule of Earnings Per Share, Basic and Diluted

The calculation of basic and diluted net income per share for the three and six months ended June 30, 2014 and 2013 was as follows (in thousands, except per share amounts):



	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Basic net income per share
Numerator:
Net income	$	4,528	$	33,598	$	116,535	$	92,740
Denominator:
Weighted-average common stock outstanding	100,148		89,201		99,871		88,209
Diluted net income per share
Denominator:
Weighted-average common stock outstanding	100,148		89,201		99,871		88,209
Effect of stock options, restricted and performance stock units, and stock purchase plan shares	1,666		1,941		1,949		2,056
Weighted-average shares used in computing diluted net income per share	101,814		91,142		101,820		90,265



	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Per share information — basic:
Net income per share	$	0.05	$	0.38	$	1.17	$	1.05

Per share information — diluted:
Net income per share	$	0.04	$	0.37	$	1.14	$	1.03

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following number of outstanding employee stock options, restricted and performance stock units and stock purchase plan shares were excluded from the computation of diluted net income per share for the three and six months ended June 30, 2014 and 2013 as they would have had an anti-dilutive effect (in thousands):



	Three Months Ended June 30,		Six Months Ended June 30,
	2014	2013	2014	2013
Anti-dilutive shares	50	91	107	107