DESCRIPTION OF BUSINESS AND BASIS FOR PRESENTATION	9 Months Ended
Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis for Presentation	DESCRIPTION OF BUSINESS AND BASIS FOR PRESENTATION Yelp Inc. was incorporated in Delaware on September 3, 2004. Except where specifically noted or the context otherwise requires, the use of terms such as the “Company” and “Yelp” in these Notes to Condensed Consolidated Financial Statements refers to Yelp Inc. and its subsidiaries. Yelp connects people with great local businesses by bringing “word of mouth” online and providing a platform for businesses and consumers to engage and transact. Yelp’s platform is transforming the way people discover local businesses; every day, millions of consumers visit its website or use its mobile app to find great local businesses to meet their everyday needs. Businesses of all sizes use the Yelp platform to engage with consumers at the critical moment when they are deciding where to spend their money. Basis of Presentation The accompanying interim condensed consolidated financial statements are unaudited. These unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and the applicable rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016, filed with the SEC on March 1, 2017 (the “Annual Report”). The unaudited condensed consolidated balance sheet as of December 31, 2016 included herein was derived from the audited consolidated financial statements as of that date, but does not include all disclosures required by GAAP, including certain notes to the financial statements. The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements. In the opinion of management, the accompanying unaudited condensed consolidated financial statements include all adjustments of a normally recurring nature necessary for the fair presentation of the interim periods presented. Significant Accounting Policies Except as set forth below, there have been no material changes to the Company’s significant accounting policies from those described in the Annual Report. Stock Repurchases—The Company accounts for repurchases of its common stock by recording the cost to repurchase those shares to treasury stock, a separate component of stockholders' equity. Upon retirement, the carrying amount of treasury shares is removed with a corresponding reduction to par value of common stock, with any excess of the cost incurred to repurchase shares over their par value recorded as an adjustment to accumulated deficit on the date of retirement. Assets and Liabilities Held for Sale—The Company considers an asset to be held for sale when: management approves and commits to a formal plan to actively market the asset for sale at a reasonable price in relation to its fair value; the asset is available for immediate sale in its present condition; an active program to locate a buyer and other actions required to complete the sale have been initiated; the sale of the asset is expected to be completed within one year; and it is unlikely that significant changes will be made to the plan. Upon designation as held for sale, the Company records the carrying value of the assets at the lower of its carrying value or its estimated fair value, less costs to sell. The Company ceases to record depreciation and amortization expense associated with assets upon their designation as held for sale. Recent Accounting Pronouncements Not Yet Effective In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2014-09 “Revenue from Contracts with Customers” (“ASU 2014-09”). ASU 2014-09 supersedes the revenue recognition requirements in “Revenue Recognition (Topic 605),” and requires entities to recognize revenue when they transfer promised goods or services to customers, in an amount that reflects the consideration that the entity expects to be entitled to in exchange for such goods or services. As currently issued and amended, ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. The Company will adopt this standard effective January 1, 2018. The new standard permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of the initial application of the guidance recognized at the date of adoption (modified retrospective method). The Company currently anticipates adopting the standard using the full retrospective method and does not anticipate a significant change in revenue recognition from the previous standard. The Company currently expenses contract acquisition costs as incurred and expects that the requirement to defer incremental contract acquisition costs and recognize them over the contract period or expected customer life will result in the recognition of deferred costs on its balance sheets. The Company is still in the process of completing its analysis on the impact this guidance will have on its consolidated financial statements, related disclosures and its internal controls over financial reporting. The Company does not expect that this guidance will have a material impact on its consolidated financial statements, with the exception of contract acquisition costs, which will be deferred and amortized over the expected life of the contract, rather than recognized in the period in which they are incurred. In February 2016, FASB issued Accounting Standards Update No. 2016-02, “Leases” (“ASU 2016-02”). The new guidance generally requires an entity to recognize on its balance sheet operating and financing lease liabilities and corresponding right-of-use assets, as well as to recognize the expenses on its statements of operations in a manner similar to that required under current accounting rules. The standard will be effective for the first interim period within annual reporting periods beginning after December 15, 2018 and early adoption is permitted. The new standard requires a modified retrospective transition for existing leases to each prior reporting period presented. The Company is currently evaluating the impact of the adoption of ASU 2016-02 on its consolidated financial statements. In August 2016, FASB issued Accounting Standards Update No. 2016-15, “Statement of Cash Flows (Subtopic 230)” (“ASU 2016-15”). The new guidance provides clarity around the cash flow classification for specific issues in an effort to reduce the current and potential future diversity in practice. The standard will be effective for the first interim period within annual reporting periods beginning after December 15, 2017 and early adoption is permitted. The Company is currently evaluating the impact of the adoption of ASU 2016-15 on its consolidated financial statements and anticipates adopting this standard for the first interim period within the annual reporting period beginning after December 15, 2017. In November 2016, FASB issued Accounting Standards Update No. 2016-18, “Statement of Cash Flows (Subtopic 230)” (“ASU 2016-18”). The new guidance requires that the statement of cash flows explain the change during the period in the total of cash, cash equivalents and amounts generally described as restricted cash or restricted cash equivalents. The standard will be effective for the first interim period within annual reporting periods beginning after December 15, 2017 and early adoption is permitted. The Company is currently evaluating the impact of the adoption of ASU 2016-18 on its consolidated financial statements and anticipates adopting this standard for the first interim period within the annual reporting period beginning after December 15, 2017. In January 2017, FASB issued Accounting Standards Update No. 2017-04, “Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment” (“ASU 2017-04”). This new guidance simplifies the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test. Entities will now perform goodwill impairment tests by comparing fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. The standard will be effective for the first interim period within annual reporting periods beginning after December 15, 2019 and early adoption is permitted. The Company is currently evaluating the impact and timing of the adoption of ASU 2017-04, but expects that it will not have a material impact on its consolidated financial statements. In March 2017, FASB issued Accounting Standards Update No. 2017-08, “Receivables—Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities” (“ASU 2017-08”). This new guidance requires entities to amortize purchased callable debt securities held at a premium to the earliest call date. The standard will be effective for the first interim period within annual reporting periods beginning after December 15, 2018 and early adoption is permitted. The Company does not expect the adoption of ASU 2017-08 to have a material impact on its consolidated financial statements. Principles of Consolidation These unaudited interim condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated upon consolidation. Use of Estimates The preparation of the Company’s unaudited interim 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.

DESCRIPTION OF BUSINESS AND BASIS FOR PRESENTATION

Yelp Inc. was incorporated in Delaware on September 3, 2004. Except where specifically noted or the context otherwise requires, the use of terms such as the “Company” and “Yelp” in these Notes to Condensed Consolidated Financial Statements refers to Yelp Inc. and its subsidiaries.

Yelp connects people with great local businesses by bringing “word of mouth” online and providing a platform for businesses and consumers to engage and transact. Yelp’s platform is transforming the way people discover local businesses; every day, millions of consumers visit its website or use its mobile app to find great local businesses to meet their everyday needs. Businesses of all sizes use the Yelp platform to engage with consumers at the critical moment when they are deciding where to spend their money.

Basis of Presentation

The accompanying interim condensed consolidated financial statements are unaudited. These unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and the applicable rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016, filed with the SEC on March 1, 2017 (the “Annual Report”). The unaudited condensed consolidated balance sheet as of December 31, 2016 included herein was derived from the audited consolidated financial statements as of that date, but does not include all disclosures required by GAAP, including certain notes to the financial statements.

The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements include all adjustments of a normally recurring nature necessary for the fair presentation of the interim periods presented.

Significant Accounting Policies

Except as set forth below, there have been no material changes to the Company’s significant accounting policies from those described in the Annual Report.

Stock Repurchases—The Company accounts for repurchases of its common stock by recording the cost to repurchase those shares to treasury stock, a separate component of stockholders' equity. Upon retirement, the carrying amount of treasury shares is removed with a corresponding reduction to par value of common stock, with any excess of the cost incurred to repurchase shares over their par value recorded as an adjustment to accumulated deficit on the date of retirement.

Assets and Liabilities Held for Sale—The Company considers an asset to be held for sale when: management approves and commits to a formal plan to actively market the asset for sale at a reasonable price in relation to its fair value; the asset is available for immediate sale in its present condition; an active program to locate a buyer and other actions required to complete the sale have been initiated; the sale of the asset is expected to be completed within one year; and it is unlikely that significant changes will be made to the plan. Upon designation as held for sale, the Company records the carrying value of the assets at the lower of its carrying value or its estimated fair value, less costs to sell. The Company ceases to record depreciation and amortization expense associated with assets upon their designation as held for sale.

Recent Accounting Pronouncements Not Yet Effective

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2014-09 “Revenue from Contracts with Customers” (“ASU 2014-09”). ASU 2014-09 supersedes the revenue recognition requirements in “Revenue Recognition (Topic 605),” and requires entities to recognize revenue when they transfer promised goods or services to customers, in an amount that reflects the consideration that the entity expects to be entitled to in exchange for such goods or services. As currently issued and amended, ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. The Company will adopt this standard effective January 1, 2018.

The new standard permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of the initial application of the guidance recognized at the date of adoption (modified retrospective method). The Company currently anticipates adopting the standard using the full retrospective method and does not anticipate a significant change in revenue recognition from the previous standard. The Company currently expenses contract acquisition costs as incurred and expects that the requirement to defer incremental contract acquisition costs and recognize them over the contract period or expected customer life will result in the recognition of deferred costs on its balance sheets. The Company is still in the process of completing its analysis on the impact this guidance will have on its consolidated financial statements, related disclosures and its internal controls over financial reporting. The Company does not expect that this guidance will have a material impact on its consolidated financial statements, with the exception of contract acquisition costs, which will be deferred and amortized over the expected life of the contract, rather than recognized in the period in which they are incurred.

In February 2016, FASB issued Accounting Standards Update No. 2016-02, “Leases” (“ASU 2016-02”). The new guidance generally requires an entity to recognize on its balance sheet operating and financing lease liabilities and corresponding right-of-use assets, as well as to recognize the expenses on its statements of operations in a manner similar to that required under current accounting rules. The standard will be effective for the first interim period within annual reporting periods beginning after December 15, 2018 and early adoption is permitted. The new standard requires a modified retrospective transition for existing leases to each prior reporting period presented. The Company is currently evaluating the impact of the adoption of ASU 2016-02 on its consolidated financial statements.

In August 2016, FASB issued Accounting Standards Update No. 2016-15, “Statement of Cash Flows (Subtopic 230)” (“ASU 2016-15”). The new guidance provides clarity around the cash flow classification for specific issues in an effort to reduce the current and potential future diversity in practice. The standard will be effective for the first interim period within annual reporting periods beginning after December 15, 2017 and early adoption is permitted. The Company is currently evaluating the impact of the adoption of ASU 2016-15 on its consolidated financial statements and anticipates adopting this standard for the first interim period within the annual reporting period beginning after December 15, 2017.

In November 2016, FASB issued Accounting Standards Update No. 2016-18, “Statement of Cash Flows (Subtopic 230)” (“ASU 2016-18”). The new guidance requires that the statement of cash flows explain the change during the period in the total of cash, cash equivalents and amounts generally described as restricted cash or restricted cash equivalents. The standard will be effective for the first interim period within annual reporting periods beginning after December 15, 2017 and early adoption is permitted. The Company is currently evaluating the impact of the adoption of ASU 2016-18 on its consolidated financial statements and anticipates adopting this standard for the first interim period within the annual reporting period beginning after December 15, 2017.

In January 2017, FASB issued Accounting Standards Update No. 2017-04, “Intangibles—Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment” (“ASU 2017-04”). This new guidance simplifies the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test. Entities will now perform goodwill impairment tests by comparing fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. The standard will be effective for the first interim period within annual reporting periods beginning after December 15, 2019 and early adoption is permitted. The Company is currently evaluating the impact and timing of the adoption of ASU 2017-04, but expects that it will not have a material impact on its consolidated financial statements.

In March 2017, FASB issued Accounting Standards Update No. 2017-08, “Receivables—Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities” (“ASU 2017-08”). This new guidance requires entities to amortize purchased callable debt securities held at a premium to the earliest call date. The standard will be effective for the first interim period within annual reporting periods beginning after December 15, 2018 and early adoption is permitted. The Company does not expect the adoption of ASU 2017-08 to have a material impact on its consolidated financial statements.

Principles of Consolidation

These unaudited interim condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated upon consolidation.

Use of Estimates

The preparation of the Company’s unaudited interim 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.