Annual report pursuant to Section 13 and 15(d)

Net (Loss) Income Per Share - Calculation of Basic and Diluted Net Income (Loss) Per Share (Detail)

v2.4.1.9
Net (Loss) Income Per Share - Calculation of Basic and Diluted Net Income (Loss) Per Share (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Numerator:                      
Net (loss) income $ 110us-gaap_NetIncomeLoss $ (3,257)us-gaap_NetIncomeLoss $ (6,291)us-gaap_NetIncomeLoss $ (836)us-gaap_NetIncomeLoss $ 2,178us-gaap_NetIncomeLoss $ 12,886us-gaap_NetIncomeLoss $ 4,610us-gaap_NetIncomeLoss $ 1,018us-gaap_NetIncomeLoss $ (10,274)us-gaap_NetIncomeLoss $ 20,692us-gaap_NetIncomeLoss $ 5,183us-gaap_NetIncomeLoss
Basic:                      
Weighted average common shares used in computing basic net (loss) income per share                 76,991us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 74,962us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 71,838us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted:                      
Weighted average common shares used in computing basic net (loss) income per share                 76,991us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 74,962us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 71,838us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Add weighted average effect of dilutive securities:                      
Stock options and restricted stock                 0us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 1,225us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 2,164us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Weighted average common shares used in computing diluted net (loss) income per share                 76,991us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 76,187us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 74,002us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Net (loss) income per common share:                      
Basic (in dollars per share)                 $ (0.13)us-gaap_EarningsPerShareBasic $ 0.28us-gaap_EarningsPerShareBasic $ 0.07us-gaap_EarningsPerShareBasic
Diluted (in dollars per share)                 $ (0.13)us-gaap_EarningsPerShareDiluted $ 0.27us-gaap_EarningsPerShareDiluted $ 0.07us-gaap_EarningsPerShareDiluted