Description of Business and Basis of Presentation	9 Months Ended
Sep. 30, 2013
Accounting Policies [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation LivePerson, Inc. (the “Company” or “LivePerson”) was incorporated in the State of Delaware in November 1995 and the LivePerson service was introduced in November 1998. In April 2000, the Company completed an initial public offering and is currently traded on the Nasdaq Global Select Market and the Tel Aviv Stock Exchange. LivePerson is headquartered in New York City with offices in Amsterdam, Atlanta, London, Melbourne, San Francisco, Santa Monica and Tel Aviv. LivePerson provides online engagement solutions offering a cloud-based platform which enables businesses to proactively connect with consumers through chat, voice and content delivery, across multiple channels and screens, including websites, social media, and mobile devices. The Company’s engagements are driven by insights derived from a broad set of consumer and business data, including historical, behavioral, operational, and third party data. Each engagement is based on proprietary analytics and a real-time understanding of consumer needs and business objectives. The Company’s products, coupled with its domain knowledge and industry expertise, have been proven to maximize the effectiveness of the online channel — by increasing sales, as well as consumer satisfaction and loyalty ratings for their customers, while also enabling their customers to reduce consumer service costs. LivePerson monitors and analyzes valuable online consumer behavioral data on behalf of its customers. Spanning the breadth of an online visitor session starting from an initial keyword search, through actions on their customer’s website, and even into a shopping cart and an executed sale, this data enables the Company to develop unique insights into consumer behavior during specific transactions within a customer’s user base. The Company’s primary revenue source is from the sale of LivePerson services to businesses of all sizes. The Company also offers an online marketplace that connects independent service providers (“Experts”) who provide information and knowledge for a fee via real-time chat with individual consumers (“Users”). Basis of Presentation The accompanying condensed consolidated financial statements as of September 30, 2013 and for the three and nine months ended September 30, 2013 and 2012 are unaudited. In the opinion of management, the unaudited condensed consolidated financial statements have been prepared on the same basis as the annual financial statements and reflect all adjustments, which include only normal recurring adjustments, necessary to present fairly the consolidated financial position of LivePerson as of September 30, 2013, and the consolidated results of operations, comprehensive (loss) income and cash flows for the interim periods ended September 30, 2013 and 2012. The financial data and other information disclosed in these notes to the condensed consolidated financial statements related to these periods are unaudited. The results of operations for any interim period are not necessarily indicative of the results of operations for any other future interim period or for a full fiscal year. The condensed consolidated balance sheet at December 31, 2012 has been derived from audited consolidated financial statements at that date. Certain information and note disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States ("GAAP") have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). These unaudited interim condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto for the year ended December 31, 2012, included in the Company’s Annual Report on Form 10-K filed with the SEC on March 1, 2013. Reclassification For comparability, certain 2012 amounts have been reclassified where appropriate, to conform to the financial presentation in 2013. Principles of Consolidation The condensed consolidated financial statements include the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated. Use of Estimates The preparation of the Company’s condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of income and expenses during the reporting period. These estimates are based on information available as of the date of the condensed consolidated financial statements; therefore, actual results could differ from management’s estimates. Recently Issued Accounting Standards Comprehensive Income In February 2013, the FASB issued ASU No. 2013-2, Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income. This ASU requires disclosures regarding reclassifications out of accumulated other comprehensive income in a single location in the financial statements by component. This ASU is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2012. The adoption of this ASU, effective January 1, 2013, did not have an impact on the Company’s condensed consolidated financial statements.

Description of Business and Basis of Presentation

LivePerson, Inc. (the “Company” or “LivePerson”) was incorporated in the State of Delaware in November 1995 and the LivePerson service was introduced in November 1998. In April 2000, the Company completed an initial public offering and is currently traded on the Nasdaq Global Select Market and the Tel Aviv Stock Exchange. LivePerson is headquartered in New York City with offices in Amsterdam, Atlanta, London, Melbourne, San Francisco, Santa Monica and Tel Aviv.

LivePerson provides online engagement solutions offering a cloud-based platform which enables businesses to proactively connect with consumers through chat, voice and content delivery, across multiple channels and screens, including websites, social media, and mobile devices. The Company’s engagements are driven by insights derived from a broad set of consumer and business data, including historical, behavioral, operational, and third party data. Each engagement is based on proprietary analytics and a real-time understanding of consumer needs and business objectives. The Company’s products, coupled with its domain knowledge and industry expertise, have been proven to maximize the effectiveness of the online channel — by increasing sales, as well as consumer satisfaction and loyalty ratings for their customers, while also enabling their customers to reduce consumer service costs.

LivePerson monitors and analyzes valuable online consumer behavioral data on behalf of its customers. Spanning the breadth of an online visitor session starting from an initial keyword search, through actions on their customer’s website, and even into a shopping cart and an executed sale, this data enables the Company to develop unique insights into consumer behavior during specific transactions within a customer’s user base.

The Company’s primary revenue source is from the sale of LivePerson services to businesses of all sizes. The Company also offers an online marketplace that connects independent service providers (“Experts”) who provide information and knowledge for a fee via real-time chat with individual consumers (“Users”).

Basis of Presentation

The accompanying condensed consolidated financial statements as of September 30, 2013 and for the three and nine months ended September 30, 2013 and 2012 are unaudited. In the opinion of management, the unaudited condensed consolidated financial statements have been prepared on the same basis as the annual financial statements and reflect all adjustments, which include only normal recurring adjustments, necessary to present fairly the consolidated financial position of LivePerson as of September 30, 2013, and the consolidated results of operations, comprehensive (loss) income and cash flows for the interim periods ended September 30, 2013 and 2012. The financial data and other information disclosed in these notes to the condensed consolidated financial statements related to these periods are unaudited. The results of operations for any interim period are not necessarily indicative of the results of operations for any other future interim period or for a full fiscal year. The condensed consolidated balance sheet at December 31, 2012 has been derived from audited consolidated financial statements at that date.

Certain information and note disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States ("GAAP") have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). These unaudited interim condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto for the year ended December 31, 2012, included in the Company’s Annual Report on Form 10-K filed with the SEC on March 1, 2013.

Reclassification

For comparability, certain 2012 amounts have been reclassified where appropriate, to conform to the financial presentation in 2013.

Principles of Consolidation

The condensed consolidated financial statements include the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated.

Use of Estimates

The preparation of the Company’s condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of income and expenses during the reporting period. These estimates are based on information available as of the date of the condensed consolidated financial statements; therefore, actual results could differ from management’s estimates.

Recently Issued Accounting Standards

Comprehensive Income

In February 2013, the FASB issued ASU No. 2013-2, Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income. This ASU requires disclosures regarding reclassifications out of accumulated other comprehensive income in a single location in the financial statements by component. This ASU is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2012. The adoption of this ASU, effective January 1, 2013, did not have an impact on the Company’s condensed consolidated financial statements.