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Net Loss Per Share | 3 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Net Loss Per Share | 10. Net Loss Per Share Basic net loss per share is calculated by dividing the net loss by the weighted-average number of common shares outstanding during the period. Diluted net loss per share is computed by dividing the net loss by the weighted-average number of common shares outstanding during the period and giving effect to all potentially dilutive common shares using the treasury-stock method. For purposes of this calculation, outstanding options and stock awards are considered to be potentially dilutive common shares and are only included in the calculation of diluted net loss per share when their effect is dilutive. Stock options and stock awards totaling approximately 8,946,000 and 8,394,000 shares of common stock as of March 31, 2019 and 2018, respectively, were excluded from the calculation of diluted net loss per share for the three months ended March 31, 2019 and 2018, because the effect of their inclusion would have been anti-dilutive. For periods in which we have a net loss and no instruments are determined to be dilutive, such as the three months ended March 31, 2019 and 2018, basic and diluted net loss per share are the same.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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