Net Income (Loss) Per Share

12 Months Ended

Dec. 31, 2015

Earnings Per Share [Abstract]

Net Income (Loss) Per Share

12. Net Income (Loss) Per Share

Basic EPS are computed using the weighted average number of shares outstanding. Diluted EPS are computed using the weighted average number of shares outstanding adjusted for the incremental shares attributed to outstanding securities with a right to purchase or convert into common stock.

The following table sets forth the computation of basic and diluted net income (loss) per share (in thousands, except per share data).

	Year Ended December 31,
	2015			2014		2013
Net income (loss)	$	(1,930	)	$	28,068	$	9,180
Weighted average common basic shares		41,030			40,985		40,930
Effect of dilutive securities		—			298		162
Weighted average common dilutive shares		41,030			41,283		41,092
Basic and diluted net income (loss) per share	$	(0.05	)	$	0.68	$	0.22

For the year ended December 31, 2015, the computation of diluted net income per share did not include options to purchase approximately 825 thousand shares, a dilutive effect of 319 thousand shares, and restricted stock units convertible into 141 thousand shares, a dilutive effect of 26 thousand shares, since their inclusion would have been anti-dilutive. Options to purchase 260 thousand shares for the year ended December 31, 2015 were not included in the computation of diluted net income (loss) per share as their exercise prices were in excess of the average stock prices for the year.

For the year ended December 31, 2014 the computation of diluted net income per share included exercisable options to purchase approximately 0.8 million shares that had a dilutive effect of 298 thousand shares. Options to purchase 295 thousand shares for the year ended December 31, 2014 were not included in the computation of diluted net income (loss) per share as their exercise prices were in excess of the average stock prices for the year.

For the year ended December 31, 2013, the computation of diluted net income per share included 17 thousand shares of unvested restricted common stock and exercisable options to purchase approximately 0.9 million shares that had a dilutive effect of 145 thousand shares. Options to purchase 412 thousand shares for the year ended December 31, 2013 were not included in the computation of diluted net income (loss) per share as their exercise prices were in excess of the average stock prices for the year.