v2.4.1.9

Net Income Per Share Attributable to Common Stockholders (Details) (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 income | $ 25,913 us-gaap_NetIncomeLoss | $ 3,105 us-gaap_NetIncomeLoss | $ 1,657 us-gaap_NetIncomeLoss | $ (431)us-gaap_NetIncomeLoss | $ 35 us-gaap_NetIncomeLoss | $ 1,297 us-gaap_NetIncomeLoss | $ 822 us-gaap_NetIncomeLoss | $ (613)us-gaap_NetIncomeLoss | $ 30,244 us-gaap_NetIncomeLoss | $ 1,541 us-gaap_NetIncomeLoss | $ 2,221 us-gaap_NetIncomeLoss
Net income attributable to participating securities |  |  |  |  |  |  |  |  | 0 us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings | (2)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings | (1,172)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
Net income attributable to common stockholders - basic | 25,913 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 3,105 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 1,657 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (431)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 35 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 1,295 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 821 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (613)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 30,244 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 1,539 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 1,049 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Undistributed earnings reallocated to participating securities |  |  |  |  |  |  |  |  | 0 us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities | 0 us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities | 1,201 us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
Net income attributable to common stockholders - diluted |  |  |  |  |  |  |  |  | $ 30,244 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted | $ 1,539 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted | $ 2,250 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted
Denominator: |  |  |  |  |  |  |  |  |  |  |
Weighted-average shares used in computing net income per share attributable to common stockholders - basic |  |  |  |  |  |  |  |  | 32,979 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 31,914 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 11,891 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Effect of potentially dilutive securities: |  |  |  |  |  |  |  |  |  |  |
Convertible preferred stock (in shares) |  |  |  |  |  |  |  |  | 0 us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock | 0 us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock | 13,270 us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock
Common stock options (in shares) |  |  |  |  |  |  |  |  | 4,191 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements | 4,059 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements | 3,187 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Contingently issuable shares related to an acquisition (in shares) |  |  |  |  |  |  |  |  | 0 us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares | 0 us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares | 4 us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares
Weighted - average shares used in computing net income (loss) per share attributable to common stockholders - diluted (in shares) |  |  |  |  |  |  |  |  | 37,170 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 35,973 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 28,352 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Basic (usd per share) | $ 0.77 us-gaap_EarningsPerShareBasic | $ 0.09 us-gaap_EarningsPerShareBasic | $ 0.05 us-gaap_EarningsPerShareBasic | $ (0.01)us-gaap_EarningsPerShareBasic | $ 0.00 us-gaap_EarningsPerShareBasic | $ 0.04 us-gaap_EarningsPerShareBasic | $ 0.03 us-gaap_EarningsPerShareBasic | $ (0.02)us-gaap_EarningsPerShareBasic | $ 0.92 us-gaap_EarningsPerShareBasic | $ 0.05 us-gaap_EarningsPerShareBasic | $ 0.09 us-gaap_EarningsPerShareBasic
Diluted (usd per share) | $ 0.69 us-gaap_EarningsPerShareDiluted | $ 0.08 us-gaap_EarningsPerShareDiluted | $ 0.04 us-gaap_EarningsPerShareDiluted | $ (0.01)us-gaap_EarningsPerShareDiluted | $ 0.00 us-gaap_EarningsPerShareDiluted | $ 0.04 us-gaap_EarningsPerShareDiluted | $ 0.02 us-gaap_EarningsPerShareDiluted | $ (0.02)us-gaap_EarningsPerShareDiluted | $ 0.81 us-gaap_EarningsPerShareDiluted | $ 0.04 us-gaap_EarningsPerShareDiluted | $ 0.08 us-gaap_EarningsPerShareDiluted
Stock Options |  |  |  |  |  |  |  |  |  |  |
Antidilutive Securities |  |  |  |  |  |  |  |  |  |  |
Common stock options (in shares) |  |  |  |  |  |  |  |  | 1,689 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_EmployeeStockOptionMember | 952 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_EmployeeStockOptionMember | 772 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis = us-gaap_EmployeeStockOptionMember

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