Income (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares Outstanding Used to Compute Income Per Share

The weighted average numbers of shares outstanding used to compute income per share amounts were as follows (in thousands):

	Year Ended December 31,
	2014	2013	2012
Shares used for basic per share calculations	31,253	31,072	30,851
Dilutive effect of outstanding options, PSUs and RSUs	435	385	123
Shares used for diluted per share calculations	31,688	31,457	30,974

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

	As of December 31,
	2014	2013	2012
Stock options	225	304	1,072
PSUs	—	12	26