COMMITMENTS AND CONTINGENCIES	3 Months Ended
Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES Office Facility Leases—The Company leases its office facilities under operating lease agreements that expire from 2018 to 2029. Certain lease agreements provide for rental payments on a graduated basis. The Company recognizes rent expense on a straight-line basis over the lease period. Rental expense was $12.0 million and $9.8 million for the three months ended March 31, 2018 and 2017, respectively. The Company has subleased certain office facilities under operating lease agreements that expire in 2021. The Company recognizes sublease rentals as a reduction in rental expense on a straight-line basis over the lease period. Sublease rental income was $0.7 million and $0.5 million for the three months ended March 31, 2018 and 2017, respectively. Legal Proceedings—The Company is subject to legal proceedings arising in the ordinary course of business. Although the results of litigation and claims cannot be predicted with certainty, the Company currently does not believe that the final outcome of any of these matters will have a material adverse effect on the Company’s business, financial position, results of operations or cash flows. On January 18, 2018, a putative class action lawsuit alleging violations of the federal securities laws was filed in the U.S. District Court for the Northern District of California, naming as defendants the Company and certain of its officers. The lawsuit alleges violations of the Exchange Act by the Company and its officers for allegedly making materially false and misleading statements regarding its business and operations on February 9, 2017. The plaintiff seeks unspecified monetary damages and other relief. Indemnification Agreements—In the ordinary course of business, the Company may provide indemnifications of varying scope and terms to customers, vendors, lessors, business partners and other parties with respect to certain matters, including, but not limited to, losses arising out of breach of such agreements, services to be provided by the Company or from intellectual property infringement claims made by third parties. Under the Purchase Agreement, the Company agreed to indemnify the Purchaser and certain related parties against certain losses arising out of Purchaser's acquisition of Eat24, including, but not limited to, any breach or inaccuracy of any representation or warranty made by the Company or Eat24 in the Purchase Agreement. The Company's indemnification obligations are subject to the terms and conditions set forth in the Purchase Agreement, and are capped at the purchase price received by the Company in the Disposal. In addition, the Company has entered into indemnification agreements with directors and certain officers and employees that will require the Company to, among other things, indemnify them against certain liabilities that may arise by reason of their status or service as directors, officers or employees. While the outcome of claims cannot be predicted with certainty, the Company does not believe that the outcome of any claims under the indemnification arrangements will have a material effect on the Company’s financial position, results of operations or cash flows.

COMMITMENTS AND CONTINGENCIES

Office Facility Leases—The Company leases its office facilities under operating lease agreements that expire from 2018 to 2029. Certain lease agreements provide for rental payments on a graduated basis. The Company recognizes rent expense on a straight-line basis over the lease period. Rental expense was $12.0 million and $9.8 million for the three months ended March 31, 2018 and 2017, respectively.

The Company has subleased certain office facilities under operating lease agreements that expire in 2021. The Company recognizes sublease rentals as a reduction in rental expense on a straight-line basis over the lease period. Sublease rental income was $0.7 million and $0.5 million for the three months ended March 31, 2018 and 2017, respectively.

Legal Proceedings—The Company is subject to legal proceedings arising in the ordinary course of business. Although the results of litigation and claims cannot be predicted with certainty, the Company currently does not believe that the final outcome of any of these matters will have a material adverse effect on the Company’s business, financial position, results of operations or cash flows.

On January 18, 2018, a putative class action lawsuit alleging violations of the federal securities laws was filed in the U.S. District Court for the Northern District of California, naming as defendants the Company and certain of its officers. The lawsuit alleges violations of the Exchange Act by the Company and its officers for allegedly making materially false and misleading statements regarding its business and operations on February 9, 2017. The plaintiff seeks unspecified monetary damages and other relief.

Indemnification Agreements—In the ordinary course of business, the Company may provide indemnifications of varying scope and terms to customers, vendors, lessors, business partners and other parties with respect to certain matters, including, but not limited to, losses arising out of breach of such agreements, services to be provided by the Company or from intellectual property infringement claims made by third parties.

Under the Purchase Agreement, the Company agreed to indemnify the Purchaser and certain related parties against certain losses arising out of Purchaser's acquisition of Eat24, including, but not limited to, any breach or inaccuracy of any representation or warranty made by the Company or Eat24 in the Purchase Agreement. The Company's indemnification obligations are subject to the terms and conditions set forth in the Purchase Agreement, and are capped at the purchase price received by the Company in the Disposal.

In addition, the Company has entered into indemnification agreements with directors and certain officers and employees that will require the Company to, among other things, indemnify them against certain liabilities that may arise by reason of their status or service as directors, officers or employees.

While the outcome of claims cannot be predicted with certainty, the Company does not believe that the outcome of any claims under the indemnification arrangements will have a material effect on the Company’s financial position, results of operations or cash flows.