Net (Loss) Income per Share (Details) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Reconciliations of basic to diluted weighted-average common shares outstanding
Weighted-average shares used in basic computation	34,621		34,404
Dilutive effect of stock-based awards	0	[1]	384	[1]
Weighted-average shares used in diluted computation	34,621		34,788
Exclude NSUs
Options excluded in the computation of diluted income per share
Options excluded in the computation of diluted income per share (in shares)	331	[1]	108	[1]
Exclude RSUs
Options excluded in the computation of diluted income per share
Options excluded in the computation of diluted income per share (in shares)	729	[1]	671	[1]
Exclude RSAs
Options excluded in the computation of diluted income per share
Options excluded in the computation of diluted income per share (in shares)	6	[1]	0	[1]
Excluded SARs
Options excluded in the computation of diluted income per share
Options excluded in the computation of diluted income per share (in shares)	730	[1]	525	[1]

[1] For the three months ended March 31, 2014, the Company excluded all NSUs, RSUs, RSAs and SARs from the diluted net loss per share computation because they were antidilutive due to the net loss during the period. For the three months ended March 31, 2013, the share-based awards that were excluded from the dilutive effect were excluded because necessary conditions had not been satisfied for the shares to be issuable based on the Company’s performance. The excluded awards include the maximum amounts achievable for these awards.