Commitments and Contingencies	3 Months Ended
Mar. 31, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	7. Commitments and Contingencies Legal In August 2011, Ameranth, Inc. (“Ameranth”) filed a patent infringement action against a number of defendants, including Grubhub Holdings Inc., in the U.S. District Court for the Southern District of California, Case No. 3:11-cv-1810. Ameranth subsequently initiated additional actions for infringement of a related patent, including separate actions against Grubhub Holdings Inc., Case No. 3:12-cv-739, and Seamless North America, LLC, Case No. 3:12-cv-737, which were consolidated along with approximately 40 other cases Ameranth filed in the same district. In September 2018, the district court granted summary judgment (on another defendant’s motion) of unpatentability on the sole remaining patent and vacated the December 3, 2018 jury trial date for the claims against Grubhub Holdings Inc. and Seamless North America, LLC. In October 2018, the district court entered final judgment on all claims in the case in which summary judgment was granted, and then stayed the remaining cases (including the cases against Grubhub and Seamless). Ameranth then appealed this decision to the U.S. Court of Appeals for the Federal Circuit. In November 2019, the Federal Circuit affirmed the district court’s findings of unpatentability in all material respects, and remanded certain dependent claims to the district court. In June 2020, Ameranth filed a petition for a Writ of Certiorari with the Supreme Court of the United States, which the Court subsequently denied in October 2020. The Company believes this case lacks merit and that it has strong defenses to all of the infringement claims. The Company intends to defend the suit vigorously. The Company has not recorded an accrual related to this lawsuit as of March 31, 2021, as it does not believe a material loss is probable. On November 20, 2019, a purported stockholder of the Company filed a putative class action complaint against the Company, Chief Executive Officer Matthew Maloney, and President and Chief Financial Officer Adam DeWitt in the United States District Court for the Northern District of Illinois, Case No. 19 Civ. 7665. The complaint, which was amended on July 24, 2020, asserts violations of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder, based on its allegation that the defendants made false and misleading statements about the Company’s growth, competitive landscape, and strategy. The complaint seeks unspecified compensatory damages and attorneys’ fees, among other relief. Grubhub filed a motion to dismiss the complaint, which is now fully briefed before the court. The defendants believe that the complaint is without merit and that a material loss is not probable. However, given the early stage of the proceedings, a reasonable estimate of the amount of any possible loss or range of loss cannot be made at this time. In addition to the matters described above, from time to time, the Company is involved in various other legal proceedings arising from the normal course of business activities, including labor and employment claims, some of which relate to the alleged misclassification of independent contractors. The Company currently has a number of pending putative class actions, Private Attorney General Act lawsuits and arbitrations alleging the misclassification of independent contractors. Legislation in this area continues to evolve, and therefore, the Company expects to continue to receive an increased number of misclassification claims. Nonetheless, the Company believes that its approach to classification is supported by the law and intends to continue to defend itself vigorously in these matters. The Company does not believe any of the foregoing claims will have a material impact on its consolidated financial statements. However, there is no assurance that any claim will not be combined into a collective or class action. During the year ended December 31, 2020, the Company made payments of $12.5 million related to the settlement of certain of these matters.

Commitments and Contingencies

3 Months Ended

Mar. 31, 2021

Commitments And Contingencies Disclosure [Abstract]

7. Commitments and Contingencies

Legal

In August 2011, Ameranth, Inc. (“Ameranth”) filed a patent infringement action against a number of defendants, including Grubhub Holdings Inc., in the U.S. District Court for the Southern District of California, Case No. 3:11-cv-1810. Ameranth subsequently initiated additional actions for infringement of a related patent, including separate actions against Grubhub Holdings Inc., Case No. 3:12-cv-739, and Seamless North America, LLC, Case No. 3:12-cv-737, which were consolidated along with approximately 40 other cases Ameranth filed in the same district.

In September 2018, the district court granted summary judgment (on another defendant’s motion) of unpatentability on the sole remaining patent and vacated the December 3, 2018 jury trial date for the claims against Grubhub Holdings Inc. and Seamless North America, LLC. In October 2018, the district court entered final judgment on all claims in the case in which summary judgment was granted, and then stayed the remaining cases (including the cases against Grubhub and Seamless). Ameranth then appealed this decision to the U.S. Court of Appeals for the Federal Circuit. In November 2019, the Federal Circuit affirmed the district court’s findings of unpatentability in all material respects, and remanded certain dependent claims to the district court. In June 2020, Ameranth filed a petition for a Writ of Certiorari with the Supreme Court of the United States, which the Court subsequently denied in October 2020. The Company believes this case lacks merit and that it has strong defenses to all of the infringement claims. The Company intends to defend the suit vigorously. The Company has not recorded an accrual related to this lawsuit as of March 31, 2021, as it does not believe a material loss is probable.

On November 20, 2019, a purported stockholder of the Company filed a putative class action complaint against the Company, Chief Executive Officer Matthew Maloney, and President and Chief Financial Officer Adam DeWitt in the United States District Court for the Northern District of Illinois, Case No. 19 Civ. 7665. The complaint, which was amended on July 24, 2020, asserts violations of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder, based on its allegation that the defendants made false and misleading statements about the Company’s growth, competitive landscape, and strategy. The complaint seeks unspecified compensatory damages and attorneys’ fees, among other relief. Grubhub filed a motion to dismiss the complaint, which is now fully briefed before the court. The defendants believe that the complaint is without merit and that a material loss is not probable. However, given the early stage of the proceedings, a reasonable estimate of the amount of any possible loss or range of loss cannot be made at this time.

In addition to the matters described above, from time to time, the Company is involved in various other legal proceedings arising from the normal course of business activities, including labor and employment claims, some of which relate to the alleged misclassification of independent contractors. The Company currently has a number of pending putative class actions, Private Attorney General Act lawsuits and arbitrations alleging the misclassification of independent contractors. Legislation in this area continues to evolve, and therefore, the Company expects to continue to receive an increased number of misclassification claims. Nonetheless, the Company believes that its approach to classification is supported by the law and intends to continue to defend itself vigorously in these matters. The Company does not believe any of the foregoing claims will have a material impact on its consolidated financial statements. However, there is no assurance that any claim will not be combined into a collective or class action. During the year ended December 31, 2020, the Company made payments of $12.5 million related to the settlement of certain of these matters.