Net Income (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Loss Per Share

The following table sets forth the computation of basic and diluted shares (in thousands):

	Years Ended December 31,
	2017		2016		2015
Weighted average common shares outstanding	49,253		49,203		51,841
Unvested common shares subject to repurchase	(2	)	(16	)	(39	)
Total common shares-basic	49,251		49,187		51,802
Effect of dilutive securities:
Options	—		357		343
Restricted stock awards and units	—		646		441
Total common shares-diluted	49,251		50,190		52,586