Income Taxes	3 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company computed the year-to-date income tax provision by applying the estimated annual effective tax rate to the year-to-date pre-tax loss and adjusted for discrete tax items in the period. The Company's income tax was a benefit of $5.7 million for the three months ended March 31, 2019, and an expense of $1.8 million for the three months ended March 31, 2018. Income tax benefit for the three months ended March 31, 2019 was primarily attributable to the tax benefit from the acquisition of HelloSign. During the three months ended March 31, 2019, the Company recorded a deferred tax liability of $6.9 million to reflect the tax effect of the assets and liabilities recorded in the acquisition of HelloSign. As a result of the acquisition of HelloSign, the Company recorded a one-time benefit of $6.9 million to recognize previously unrecognized deferred tax assets, which are now more-likely-than-not to be realized as a result of the net deferred tax liability recorded in the transaction. For further discussion of the HelloSign acquisition, see Note 5 "Business Combinations". For the periods presented, the difference between the U.S. statutory rate and the Company's effective tax rate is primarily due to the full valuation allowance on its U.S. and Irish deferred tax assets. The effective tax rate is also impacted by earnings realized in foreign jurisdictions with statutory tax rates lower than the federal statutory tax rate. The Company periodically evaluates the realizability of its net deferred tax assets based on all available evidence, both positive and negative. The realization of net deferred tax assets is dependent on the Company's ability to generate sufficient future taxable income during periods prior to the expiration of tax attributes to fully utilize these assets. As of March 31, 2019, the Company continues to maintain a full valuation allowance on its deferred tax assets in the U.S. and Ireland. However, the Company has partially benefited from its deferred tax assets due to the recognition of forecasted future income which is more likely than not to be earned in one of its foreign jurisdictions. The Company is subject to income tax audits in the U.S. and foreign jurisdictions. The Company records liabilities related to uncertain tax positions and believes that it has provided adequate reserves for income tax uncertainties in all open tax years. Unrecognized tax benefits increased by approximately $3.6 million for the three months ended March 31, 2019, of which $0.6 million, if recognized, would affect the Company's effective tax rate.

Income Taxes

The Company computed the year-to-date income tax provision by applying the estimated annual effective tax rate to the year-to-date pre-tax loss and adjusted for discrete tax items in the period. The Company's income tax was a benefit of $5.7 million for the three months ended March 31, 2019, and an expense of $1.8 million for the three months ended March 31, 2018.

Income tax benefit for the three months ended March 31, 2019 was primarily attributable to the tax benefit from the acquisition of HelloSign.

During the three months ended March 31, 2019, the Company recorded a deferred tax liability of $6.9 million to reflect the tax effect of the assets and liabilities recorded in the acquisition of HelloSign. As a result of the acquisition of HelloSign, the Company recorded a one-time benefit of $6.9 million to recognize previously unrecognized deferred tax assets, which are now more-likely-than-not to be realized as a result of the net deferred tax liability recorded in the transaction. For further discussion of the HelloSign acquisition, see Note 5 "Business Combinations".

For the periods presented, the difference between the U.S. statutory rate and the Company's effective tax rate is primarily due to the full valuation allowance on its U.S. and Irish deferred tax assets. The effective tax rate is also impacted by earnings realized in foreign jurisdictions with statutory tax rates lower than the federal statutory tax rate.

The Company periodically evaluates the realizability of its net deferred tax assets based on all available evidence, both positive and negative. The realization of net deferred tax assets is dependent on the Company's ability to generate sufficient future taxable income during periods prior to the expiration of tax attributes to fully utilize these assets. As of March 31, 2019, the Company continues to maintain a full valuation allowance on its deferred tax assets in the U.S. and Ireland. However, the Company has partially benefited from its deferred tax assets due to the recognition of forecasted future income which is more likely than not to be earned in one of its foreign jurisdictions.

The Company is subject to income tax audits in the U.S. and foreign jurisdictions. The Company records liabilities related to uncertain tax positions and believes that it has provided adequate reserves for income tax uncertainties in all open tax years. Unrecognized tax benefits increased by approximately $3.6 million for the three months ended March 31, 2019, of which $0.6 million, if recognized, would affect the Company's effective tax rate.