GrubHub 10-K 26 Feb 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Feb. 19, 2016	Jun. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Trading Symbol	GRUB
Entity Registrant Name	GRUBHUB INC.
Entity Central Index Key	1,594,109
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		84,576,652
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Entity Public Float			$ 2,186,085,162

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Revenues	$ 361,825	$ 253,873	$ 137,143
Costs and expenses:
Sales and marketing	91,150	66,201	37,347
Operations and support	107,424	62,509	34,173
Technology (exclusive of amortization)	32,782	25,185	15,357
General and administrative	40,506	32,307	21,907
Depreciation and amortization	28,034	22,687	13,470
Total costs and expenses	299,896	208,889	122,254
Income before provision for income taxes	61,929	44,984	14,889
Provision for income taxes	23,852	20,721	8,142
Net income	38,077	24,263	6,747
Preferred stock tax distributions		(320)	(1,073)
Net income attributable to common stockholders	$ 38,077	$ 23,943	$ 5,674
Net income per share attributable to common stockholders:
Basic	$ 0.45	$ 0.33	$ 0.14
Diluted	$ 0.44	$ 0.30	$ 0.12
Weighted-average shares used to compute net income per share attributable to common stockholders:
Basic	84,076	73,571	40,681
Diluted	85,706	81,698	56,645

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 38,077	$ 24,263	$ 6,747
OTHER COMPREHENSIVE INCOME (LOSS)
Foreign currency translation adjustments	(342)	(394)	159
COMPREHENSIVE INCOME	$ 37,735	$ 23,869	$ 6,906

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
CURRENT ASSETS:
Cash and cash equivalents	$ 169,293	$ 201,796
Short term investments	141,448	111,341
Accounts receivable, less allowances for doubtful accounts	42,051	36,127
Prepaid expenses	3,482	2,940
Total current assets	356,274	352,204
PROPERTY AND EQUIPMENT:
Property and equipment, net of depreciation and amortization	19,082	16,003
OTHER ASSETS:
Other assets	3,105	3,543
Goodwill	396,220	352,788
Acquired intangible assets, net of amortization	285,567	254,339
Total other assets	684,892	610,670
TOTAL ASSETS	1,060,248	978,877
CURRENT LIABILITIES:
Restaurant food liability	64,326	91,575
Accounts payable	8,189	3,371
Accrued payroll	4,841	5,958
Taxes payable	426	1,660
Other accruals	11,830	8,441
Total current liabilities	89,612	111,005
LONG TERM LIABILITIES:
Deferred taxes, non-current	87,584	91,419
Other accruals	5,456	5,931
Total long term liabilities	$ 93,040	$ 97,350
Commitments and contingencies
STOCKHOLDERS’ EQUITY:
Series A Convertible Preferred Stock, $0.0001 par value. Authorized: 25,000,000 shares as of December 31, 2015 and December 31, 2014; issued and outstanding: no shares as of December 31, 2015 and December 31, 2014.
Common stock, $0.0001 par value. Authorized: 500,000,000 shares at December 31, 2015 and December 31, 2014; issued and outstanding: 84,979,869 and 81,905,325 shares as of December 31, 2015 and December 31, 2014, respectively	$ 8	$ 8
Accumulated other comprehensive loss	(604)	(262)
Additional paid-in capital	759,292	689,953
Retained earnings	118,900	80,823
Total Stockholders’ Equity	877,596	770,522
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 1,060,248	$ 978,877

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Statement Of Financial Position [Abstract]
Series A Convertible Preferred Stock, par value	$ 0.0001	$ 0.0001
Series A Convertible Preferred Stock, shares authorized	25,000,000	25,000,000
Series A Convertible Preferred Stock, shares issued	0	0
Series A Convertible Preferred Stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	84,979,869	81,905,325
Common stock, shares outstanding	84,979,869	81,905,325

Statements of Cash Flows

Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 38,077	$ 24,263	$ 6,747
Adjustments to reconcile net income to net cash from operating activities:
Depreciation	5,085	5,032	3,992
Provision for doubtful accounts	850	426	473
Loss on disposal of fixed assets		11
Deferred taxes	(3,835)	4,612	1,706
Amortization of intangible assets	22,949	17,655	9,477
Tenant allowance amortization	(159)	(159)	(159)
Stock-based compensation	13,450	9,393	4,933
Deferred rent	32	(17)	(135)
Investment premium amortization	688	315
Change in assets and liabilities, net of the effects of business acquisitions:
Accounts receivable	(4,343)	(7,394)	(8,298)
Prepaid expenses and other assets	242	(1,669)	(2,388)
Restaurant food liability	(29,409)	13,414	26,549
Accounts payable	3,312	(259)	2,065
Accrued payroll	(2,104)	4,243	(1,707)
Other accruals	(80)	3,038	(2,192)
Due to related party			(244)
Net cash provided by operating activities	44,755	72,904	40,819
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of investments	(220,667)	(113,156)
Proceeds from maturity of investments	189,872	1,500
Capitalized website and development costs	(7,137)	(3,431)	(2,592)
Purchases of property and equipment	(4,150)	(3,653)	(4,429)
Acquisitions of businesses, net of cash acquired	(73,907)
Cash acquired in merger of Grubhub Holdings Inc.			13,266
Other cash flows from investing activities	(408)
Net cash provided by (used in) investing activities	(116,397)	(118,740)	6,245
CASH FLOWS FROM FINANCING ACTIVITIES
Net proceeds from the issuance of common stock		142,541
Repurchases of common stock		(116)	(1,367)
Proceeds from exercise of stock options	11,919	8,322	1,418
Excess tax benefits related to stock-based compensation	27,830	12,975
Taxes paid related to net settlement of stock-based compensation awards	(345)	(2,070)
Preferred stock tax distributions		(320)	(1,893)
Net cash provided by (used in) financing activities	39,404	161,332	(1,842)
Net change in cash and cash equivalents	(32,238)	115,496	45,222
Effect of exchange rates on cash	(265)	(242)	159
Cash and cash equivalents at beginning of year	201,796	86,542	41,161
Cash and cash equivalents at end of the period	169,293	201,796	86,542
SUPPLEMENTAL DISCLOSURE OF NON CASH ITEMS
Fair value of common stock issued for acquisitions	15,980		421,485
Cash paid for income taxes		1,326	$ 7,706
Capitalized property, equipment and website and development costs in accounts payable at period end	927
Cashless exercise of stock options		1,054
Settlement of receivable through cashless acquisition of treasury shares in connection with the net settlement of stock-based awards	$ (345)	$ (3,123)

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity and Redeemable Common Stock - USD ($) $ in Thousands	Total	Common stock	Preferred Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Redeemable Common Stock
Balance, beginning (in shares) at Dec. 31, 2012		31,218,164	11,185,683	131,607
Balance, beginning at Dec. 31, 2012	$ 137,888	$ 3	$ 1	$ (858)	$ 86,743	$ (27)	$ 52,026
Net income	6,747						6,747
Common stock repurchase	(1,367)			$ (1,367)
Common stock repurchase (Shares)		(176,082)		176,082
Treasury share reissuance				$ 2,225	(2,225)
Treasury share reissuance (shares)		307,689		(307,689)
Currency translation	159					159
Stock-based compensation	4,933				4,933
Issuance of common stock, acquisitions	421,485	$ 2	$ 1		421,482
Issuance of common stock, acquisitions (shares)		23,318,580	8,098,430
Preferred stock tax distributions	(1,893)						(1,893)
Redeemable common stock	(18,415)				(18,415)			$ 18,415
Redeemable common stock (shares)		(1,344,236)						1,344,236
Deferred tax effects attributable to merger of partnership interest	6,420				6,420
Stock option exercises, net of withholdings and other	1,418				1,418
Stock option exercises, net of withholdings and other (in shares)		433,322
Balance, ending (in shares) at Dec. 31, 2013		53,757,437	19,284,113
Balance, ending at Dec. 31, 2013	557,375	$ 5	$ 2		500,356	132	56,880
Balance, ending, redeemable stock at Dec. 31, 2013								$ 18,415
Balance, ending, redeemable stock (in shares) at Dec. 31, 2013								1,344,236
Net income	24,263						24,263
Currency translation	(394)					(394)
Termination of put rights of redeemable common stock, in connection with the IPO	34,950				34,950			$ (34,950)
Termination of put rights of redeemable common stock in connection with the IPO (in shares)		1,344,236						(1,344,236)
Conversion of preferred stock upon IPO		$ 2	$ (2)
Conversion of preferred stock upon IPO (in shares)		19,284,113	(19,284,113)
Issuance of common stock, net of issuance costs	142,541	$ 1			142,540
Issuance of common stock, net of issuance costs (in shares)		5,250,000
Change in fair value of redeemable common stock	(16,535)				(16,535)			$ 16,535
Stock-based compensation	9,530				9,530
Preferred stock tax distributions	(320)						(320)
Tax benefit related to stock-based compensation	12,975				12,975
Stock option exercises, net of withholdings and other	9,376				9,376
Stock option exercises, net of withholdings and other (in shares)		2,416,651
Common stock repurchases and retirements	(3,239)				(3,239)
Common stock repurchases and retirements (in shares)		(147,112)
Balance, ending (in shares) at Dec. 31, 2014		81,905,325
Balance, ending at Dec. 31, 2014	770,522	$ 8			689,953	(262)	80,823
Net income	38,077						38,077
Currency translation	(342)					(342)
Stock-based compensation	13,955				13,955
Issuance of common stock, acquisitions	15,980				15,980
Issuance of common stock, acquisitions (shares)		407,812
Tax benefit related to stock-based compensation	27,830				27,830
Stock option exercises, net of withholdings and other	$ 11,919				11,919
Stock option exercises, net of withholdings and other (in shares)	2,578,398	2,578,398
Issuance of restricted stock awards (shares)		101,616
Shares repurchased and retired to satisfy tax withholding upon vesting	$ (345)				(345)
Shares repurchased and retired to satisfy tax withholding upon vesting (in share)		(13,282)
Balance, ending (in shares) at Dec. 31, 2015		84,979,869
Balance, ending at Dec. 31, 2015	$ 877,596	$ 8			$ 759,292	$ (604)	$ 118,900

Organization and Reorganization

Organization and Reorganization	12 Months Ended
	Dec. 31, 2015
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Reorganization	1. Organization and Reorganization Organization Grubhub Inc., a Delaware corporation, and its wholly-owned subsidiaries (collectively referred to as the “Company”) provide an online and mobile platform for restaurant pick-up and delivery orders. Diners enter their delivery address or use geo-location within the mobile applications and the Company displays the menus and other relevant information for restaurants in its network. Orders may be placed directly online, via mobile applications or over the phone at no cost to the diner. The Company charges the restaurant a per order commission that is largely fee based. Reorganization and History On August 8, 2013, Grubhub Inc. acquired, through a series of transactions, all of the equity interests of each of Seamless North America, LLC, Seamless Holdings Corporation (“Seamless Holdings”) and Grubhub Holdings Inc. pursuant to that certain Reorganization and Contribution Agreement, dated as of May 19, 2013, by and among Grubhub Inc., Seamless North America, LLC, Seamless Holdings, Grubhub Holdings Inc. and the other parties thereto (the “Reorganization Agreement”). Following this transaction, the Company concluded that Seamless Holdings was deemed the acquirer for financial reporting purposes. See Note 3, “ Acquisitions” The financial position and results of operations of Seamless Holdings and Seamless North America, LLC have been included in the consolidated financial statements for all periods presented.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies Basis of Presentation and Principles of Consolidation The Company’s consolidated financial statements were prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The accompanying consolidated financial statements include all wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. The consolidated statements of operations include the results of entities acquired from the dates of the acquisitions for accounting purposes. Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and the related disclosures at the date of the financial statements, as well as the reported amounts of revenue and expenses during the periods presented. Estimates include revenue recognition, the allowance for doubtful accounts, website and internal-use software development costs, goodwill, depreciable lives of property and equipment, recoverability of intangible assets with finite lives and other long-lived assets and stock-based compensation. To the extent there are material differences between these estimates, judgments or assumptions and actual results, the Company’s consolidated financial statements will be affected. In many cases, the accounting treatment of a particular transaction is specifically dictated by GAAP and does not require management’s judgment in its application. Cash and Cash Equivalents Cash includes demand deposits with banks or financial institutions. Cash equivalents include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and that are so near their maturity that they present minimal risk of changes in value because of changes in interest rates. The Company’s cash equivalents include only investments with original maturities of three months or less. The Company regularly maintains cash in excess of federally insured limits at financial institutions. Marketable Securities Marketable securities consist primarily of commercial paper and investment grade U.S. and non-U.S.-issued corporate and U.S. government agency debt securities. The Company invests in a diversified portfolio of marketable securities and limits the concentration of its investment in any particular security. Marketable securities with original maturities of three months or less are included in cash and cash equivalents and marketable securities with original maturities greater than three months, but less than one year, are included in short term investments on the consolidated balance sheets. The Company determines the classification of its marketable securities as available-for-sale or held-to-maturity at the time of purchase and reassesses these determinations at each balance sheet date. Debt securities are classified as held-to-maturity when the Company has the intent to hold the securities to maturity. Held-to-maturity securities are stated at amortized cost and are periodically assessed for other-than-temporary impairment. The amortized cost of debt securities is adjusted for the amortization of premiums and accretion of discounts to maturity, which is recognized as interest income within general and administrative expense in the consolidated statements of operations. Interest income is recognized when earned. Accumulated Other Comprehensive Loss Accumulated other comprehensive loss consists of foreign currency translation adjustments. The financial statements of the Company’s U.K. subsidiary are translated from their functional currency into U.S. dollars. Assets and liabilities are translated at period end rates of exchange, and revenue and expenses are translated using average rates of exchange. The resulting gain or loss is included in accumulated other comprehensive loss on the consolidated balance sheets. Property and Equipment, Net Property and equipment is recorded at cost and depreciated using the straight-line method over the estimated useful lives of the related assets. The useful lives are as follows: Computer equipment 2-3 years Delivery equipment 1.5 years Furniture and fixtures 5 years Developed software 1-3 years Purchased software 3-5 years Leasehold improvements Shorter of expected useful life or lease term The Company reduced the estimated useful life on certain developed and purchased software and computer equipment assets to coincide with the migration of nearly all of the Seamless consumer diner traffic to a new web and mobile platform during the second quarter of 2015 (see Note 7, “ Property and Equipment” Maintenance and repair costs are charged to expense as incurred. Major improvements, which extend the useful life of the related asset, are capitalized. Upon disposal of a fixed asset, the Company records a gain or loss based on the difference between the proceeds received and the net book value of the disposed asset. Accounts Receivable, Net Accounts receivable primarily represent the net cash due from the Company’s payment processor for cleared transactions and amounts owed from corporate customers. The carrying amount of the Company’s receivables is reduced by an allowance for doubtful accounts that reflects management’s best estimate of amounts that will not be collected. These uncollected amounts are generally not recovered from the restaurants. The allowance is recorded through a charge to bad debt expense which is recorded within general and administrative expense in the consolidated statements of operations. The allowance is based on historical loss experience and any specific risks identified in collection matters. Management provides for probable uncollectible amounts through a charge against bad debt expense and a credit to an allowance based on its assessment of the current status of individual accounts. Balances still outstanding after management has used reasonable collection efforts are written off against the allowance. The Company does not charge interest on trade receivables. The Company incurs expenses for uncollected credit card receivables (or “chargebacks”), including fraudulent orders, when a diner’s card is authorized but fails to process, and for other unpaid credit card receivables, as well as uncollected accounts receivable from the Company’s corporate customers. The majority of the Company’s chargeback expense is recorded directly to general and administrative expense in the consolidated statements of operations as the charges are incurred; however, a portion of the allowance for doubtful accounts includes a reserve for chargebacks on the net cash due from the Company’s payment processors as of the end of the period. Changes in the Company’s allowance for doubtful accounts for the periods presented were as follows: Year Ended December 31, 2015 2014 Balance at beginning of period $ 723 $ 510 Additions to expense 850 426 Writeoffs, net of recoveries and other adjustments (614 ) (213 ) Balance at end of period $ 959 $ 723 Advertising Costs Advertising costs are generally expensed as incurred in connection with the requisite service period. Certain advertising production costs are capitalized and expensed when the advertisement first takes place. For the years ended December 31, 2015, 2014 and 2013, expenses attributable to advertising totaled approximately $64.4 million, $45.9 million and $25.0 million, respectively. Advertising costs are recorded in sales and marketing expense on the Company’s consolidated statements of operations. Stock-Based Compensation The Company measures compensation expense for all stock-based awards, including stock options, restricted stock units and restricted stock awards, at fair value on the date of grant and recognizes compensation expense over the service period on a straight-line basis for awards expected to vest. The Company uses the Black-Scholes option-pricing model to determine the fair value for stock options. In valuing the Company’s options, the Company makes assumptions about risk-free interest rates, dividend yields, volatility and weighted-average expected lives, including estimated forfeiture rates. Risk-free interest rates are derived from U.S. Treasury securities as of the option grant date. Expected dividend yield is based on the Company’s historical dividend payments, which have been zero to date. As the Company did not have public trading history for its common shares until April of 2014, the expected volatility for the Company’s common stock is estimated using a combination of the published historical and implied volatilities of industry peers representing the verticals in which the Company operates and the historical volatility of the Company’s own common stock. The Company estimates the weighted-average expected life of the options as the average of the vesting option schedule and the term of the award, since the Company does not have sufficient historical exercise data to provide a reasonable basis upon which to estimate expected term due to the limited period of time stock-based awards have been exercisable. The term of the award is estimated using the simplified method. Forfeiture rates are estimated using historical actual forfeiture trends as well as the Company’s judgment of future forfeitures. These rates are evaluated quarterly and any change in compensation expense is recognized in the period of the change. The estimation of stock awards that will ultimately vest requires judgment, and to the extent actual results or updated estimates differ from the Company’s current estimates, such amounts will be recorded as a cumulative adjustment in the period the estimates are revised. The Company considers many factors when estimating expected forfeitures, including the types of awards and employee class. Actual results, and future changes in estimates, may differ substantially from management’s current estimates. The Company has elected to use the with-and-without method in determining the order in which tax attributes are utilized. As a result, the Company will only recognize a tax benefit for stock-based awards in additional paid-in capital if an incremental tax benefit is realized after all other tax attributes available to the Company have been utilized. See Note 9, “Stock-Based Compensation” for further discussion. Provision for Income Taxes The provision for income taxes is determined using the asset and liability method. Under this method, deferred tax assets and liabilities are calculated based upon the temporary differences between the financial statement and income tax bases of assets and liabilities using the enacted tax rates that are applicable in a given year. The Company utilizes a two-step approach to recognizing and measuring uncertain tax positions (“tax contingencies”). The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes. The second step is to measure the tax benefit as the largest amount which is more than 50% likely to be realized upon ultimate settlement. The Company considers many factors when evaluating and estimating its tax positions and tax benefits, which may require periodic adjustments and which may not accurately forecast actual outcomes. The Company includes interest and penalties related to tax contingencies in the provision for income taxes in the consolidated statements of operations. See Note 10, “ Income Taxes Seamless North America, LLC became a partnership for tax purposes in June of 2011. The income tax consequences of a partnership are borne by its partners. The tax consequences of this partnership were borne by Aramark Holdings Corporation (“Aramark”) and SLW Investors, LLC from June of 2011 through October 29, 2012. Starting October 30, 2012, 74% of the partnership’s taxable income was reflected as taxable income at Seamless Holdings, a subsidiary of Grubhub Inc. Starting on August 9, 2013, 100% of the partnership’s taxable income was recognized as taxable income by the Company. If Seamless North America, LLC had been taxed as a C corporation for all of its earnings throughout 2013, the tax expense recorded in these consolidated statements of operations would have increased by $0.9 million. Intangible Assets Intangible assets with finite useful lives are amortized using the straight-line method over their useful lives and are reviewed for impairment. The Company evaluates intangible assets and other long-lived assets for impairment whenever events or circumstances indicate that they may not be recoverable, or at least annually. Recoverability is measured by comparing the carrying amount of an asset group to the future undiscounted net cash flows expected to be generated by that asset group. If this comparison indicates impairment, the amount of impairment to be recognized is calculated as the difference between the carrying value and the fair value of the asset group, generally measured by discounting estimated future cash flows. There were no impairment indicators present during the years ended December 31, 2015, 2014 or 2013. Website and Software Development Costs The costs incurred in the preliminary stages of website and software development are expensed as incurred. Once an application has reached the development stage, internal and external costs, if direct and incremental and deemed by management to be significant, are capitalized and amortized on a straight-line basis over the estimated useful life of the application. Maintenance and enhancement costs, including those costs in the post-implementation stages, are typically expensed as incurred, unless such costs relate to substantial upgrades and enhancements to the website or software that result in added functionality, in which case the costs are capitalized and amortized on a straight-line basis over the estimated useful lives. Amortization expense related to capitalized website and software development costs is included in depreciation and amortization in the consolidated statements of operations. The Company capitalized $8.0 million, $3.6 million and $2.6 million of website development costs during the years ended December 31, 2015, 2014 and 2013, respectively. Goodwill Goodwill represents the excess of the cost of an acquired business over the fair value of the assets acquired at the date of acquisition. Absent any special circumstances that could require an interim test, the Company has elected to test for goodwill impairment at September 30 of each year. The Company tests for impairment using a two-step process. The first step of the goodwill impairment test identifies if there is potential goodwill impairment. If step one indicates that an impairment may exist, a second step is performed to measure the amount of the goodwill impairment, if any, by comparing the implied fair value of goodwill with the carrying amount. If the implied fair value of goodwill is less than the carrying amount, a write-down is recorded. The Company determined there was no goodwill impairment during the years ended December 31, 2015, 2014 or 2013. Fair Value Accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. The standards also establish a fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. See Note 14, “Fair Value Measurement,” Concentration of Credit Risk Financial instruments which potentially subject the Company to concentrations of credit risk consist principally of accounts receivable. For the years ended December 31, 2015, 2014 and 2013, the Company had no customers which accounted for more than 1% of revenue or 10% of accounts receivable. Revenue Recognition In general, the Company recognizes revenue when (i) persuasive evidence of an arrangement exists, (ii) delivery has occurred or services have been rendered to the customer, (iii) the fee is fixed or determinable and (iv) collectability is reasonably assured. The Company considers a signed agreement, a binding contract with the restaurant or other similar documentation reflecting the terms and conditions under which products or services will be provided to be persuasive evidence of an arrangement. The Company generates revenues primarily when diners place an order on the platform through its mobile applications, its websites, third-party websites that incorporate API or one of the Company’s listed phone numbers. Restaurants pay a commission, typically a percentage of the transaction, on orders that are processed through the platform. Most of the restaurants on the platform can choose their level of commission rate, at or above a base rate, to affect their relative priority in the sorting algorithms, with restaurants paying higher commission rates generally appearing higher in the search order than restaurants paying lower commission rates. Additionally, restaurants that use the Company’s delivery services pay an additional commission for the use of those services. As an agent of the merchant in the transaction, the Company recognizes as revenues only the commissions from the transaction, which are a percentage of the total Gross Food Sales for such transaction. The Company periodically provides incentive offers to restaurants and diners to use the platform. These promotions are generally cash credits to be applied against purchases. These incentive offers are recorded as reductions in revenues, generally on the date the corresponding revenue is recorded. Revenues from online and phone delivery orders are recognized when these orders are placed at the restaurants. The amount of revenue recorded by the Company is based on the contractual arrangement with the related restaurant, and is adjusted for any cash credits, including incentive offers provided to restaurants and diners, related to the transaction. The Company also recognizes as revenue any fees charged to the diner for delivery services provided by the Company. Although the Company will process the entire amount of the transaction with the diner, it will record revenue on a net basis because the Company is acting as an agent of the merchant in the transaction. The Company will record an amount representing the restaurant food liability for the net balance due the restaurant. Costs incurred for processing the transactions and providing delivery services are included in operations and support in the consolidated statements of operations. Deferred Rent For the Company’s operating leases, the Company recognizes rent expenses on a straight-line basis over the terms of the leases. Accordingly, the Company records the difference between cash rent payments and the recognition of rent expenses as a deferred rent liability in the consolidated balance sheets. The Company has landlord-funded leasehold improvements that are recorded as tenant allowances which are being amortized as a reduction of rent expense over the noncancelable terms of the operating leases. Segments The Company has one reportable segment, which has been identified based on how the chief operating decision maker manages the business, makes operating decisions and evaluates operating performance. Recently Issued Accounting Pronouncements In November 2015, Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2015-17, “Income Taxes – Balance Sheet Classification of Deferred Taxes” (“ASU 2015-17”). The purpose of the standard is to simplify the presentation of deferred taxes on a classified balance sheet. Under current GAAP, deferred income tax assets and liabilities are separated into current and noncurrent amounts in the balance sheet. The amendments in ASU 2015-17 require that all deferred tax assets and liabilities be classified as noncurrent in the balance sheet. The ASU is effective beginning in the first quarter of 2017, but with early adoption permitted and may be applied either prospectively or retrospectively. The Company has elected to early adopt ASU 2015-17 on a retrospective basis effective in the fourth quarter of 2015. The adoption of ASU 2015-17 impacted the presentation of the Company’s deferred tax assets and liabilities in the consolidated balance sheets and certain disclosures, but did not have an impact on results of operations or cash flows. See Note 10, “Income Taxes” for further details. In September 2015, the FASB issued Accounting Standards Update No. 2015-16, “Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments” (“ASU 2015-16”), which eliminates the requirement to account for adjustments identified during the measurement-period in a business combination retrospectively. Instead, the acquirer must recognize measurement-period adjustments during the period in which they are identified, including the effect on earnings of any amounts that would have been recorded in previous periods had the purchase accounting been completed at the acquisition date. ASU 2015-16 will be effective for the Company in the first quarter of 2016 with early adoption permitted. The adoption of ASU 2015-16 is expected to eliminate costs related to retrospective application of any measurement-period adjustments that may be identified, but otherwise is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows. In April 2015, the FASB issued Accounting Standards Update 2015-05, “Intangibles -Goodwill and Other – Internal Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement” (“ASU 2015-05”), which provides guidance on accounting for fees paid in a cloud computing arrangement. Under ASU 2015-05, if a cloud computing arrangement includes a software license, the software license element should be accounted for consistent with the purchase of other software licenses. If the cloud computing arrangement does not include a software license, it should be accounted for as a service contract. ASU 2015-05 will be effective for the Company in the first quarter of 2016 and may be applied either prospectively or retrospectively. The Company has elected to apply ASU 2015-05 prospectively; however, its adoption is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows. In May 2014, the FASB issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”) , which supersedes the revenue recognition requirements in Topic 605, Revenue Recognition, including most industry-specific requirements. ASU 2014-09 establishes a five-step revenue recognition process in which an entity will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. ASU 2014-09 also requires enhanced disclosures regarding the nature, amount, timing and uncertainty of revenues and cash flows from contracts with customers. In August 2015, the FASB issued Accounting Standards Update 2015-14, “Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date”, which defers the effective date of ASU 2014-09 by one year. ASU 2014-09 will be effective for the Company in the first quarter of 2018. Management is currently evaluating the impact the adoption of ASU 2014-09 will have on the .

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Acquisitions	3. Acquisitions 2015 Acquisitions On February 4, 2015, the Company acquired assets of DiningIn.com, Inc. and certain of its affiliates (collectively, “DiningIn”), on February 27, 2015, the Company acquired the membership units of Restaurants on the Run, LLC (“Restaurants on the Run”) and on December 4, 2015, the Company acquired the membership units of Mealport USA, LLC (“Delivered Dish”). Aggregate consideration The excess of the consideration transferred in the acquisitions over the net amounts assigned to the fair value of the assets acquired was recorded as goodwill, which represents the opportunity to expand restaurant delivery services and enhance the breadth and depth of the Company’s restaurant networks. D uring the year ended December 31, 2015, the Company incurred certain expenses directly and indirectly related to acquisitions of million, which were recognized in general and administrative expenses within the consolidated statements of operations. The assets acquired and liabilities assumed of DiningIn, Restaurants on the Run and Delivered Dish were recorded at their estimated fair values as of the closing dates of February 4, 2015, February 27, 2015 and December 4, 2015, respectively. The following table summarizes the final purchase price allocation acquisition-date fair values of the assets and liabilities acquired in connection with the DiningIn, Restaurants on the Run and Delivered Dish acquisitions: (in thousands) Cash and cash equivalents $ 698 Accounts receivable 2,331 Prepaid expenses and other assets 325 Customer and vendor relationships 44,259 Property and equipment 161 Developed technology 4,676 Goodwill 43,432 Trademarks 529 Accounts payable and accrued expenses (5,826 ) Total purchase price plus cash acquired 90,585 Cash acquired (698 ) Fair value of common stock issued (15,980 ) Net cash paid $ 73,907 The estimated fair values of the intangible assets acquired were determined based on a combination of the income, cost, and market approaches to measure the fair value of the customer (restaurant) relationships, developed technology and trademarks. The fair value of the trademarks was measured based on the relief from royalty method. The cost approach, specifically the cost to recreate method, was used to value the developed technology. The income approach, specifically the multi-period excess earnings method, was used to value the customer (restaurant) relationships. These fair value measurements were based on significant inputs not observable in the market and thus represent Level 3 measurements within the fair value hierarchy. The results of operations of DiningIn, Restaurants on the Run and Delivered Dish have been included in the Company’s financial statements since February 4, 2015, February 27, 2015 and December 4, 2015, respectively. The total amount of revenues and net loss from the acquisitions included in the Company’s operating results since the respective acquisition dates through December 31, 2015 were $23.0 million and $1.5 million, respectively. The following unaudited pro forma information presents a summary of the operating results of the Company for the years ended December, 2015 and 2014 as if the acquisitions had occurred on January 1, 2014: Year Ended December 31, 2015 2014 (in thousands) Revenues $ 371,021 $ 283,522 Net income 39,431 23,103 The pro forma adjustments reflect the amortization that would have been recognized for intangible assets, elimination of transaction costs incurred and pro forma tax adjustments for the years ended December 31, 2015 and 2014 as follows: Year Ended December 31, 2015 2014 (in thousands) Depreciation and amortization $ 3 $ 5,483 Transaction costs (1,055 ) (646 ) Income tax benefit (109 ) (1,066 ) The unaudited pro forma revenues and net income are not intended to represent or be indicative of the Company’s consolidated results of operations or financial condition that would have been reported had the acquisitions been completed as of the beginning of the 2014 Acquisitions There were no acquisitions during the year ended December 31, 2014. 2013 Acquisitions On August 8, 2013 (the “Merger Date”), the Company acquired all of the equity interests of each of Seamless North America, LLC, Seamless Holdings and Grubhub Holdings Inc. pursuant to the Reorganization Agreement. In February 2014, Grubhub, Inc. changed its name to Grubhub Holdings Inc. The Company issued 23,318,580 shares of common stock and 8,098,430 shares of preferred stock to Grubhub Holdings Inc. in exchange for all of Grubhub Holdings Inc.’s equity interests (the “Merger”). The Company concluded that Seamless Holdings was deemed the acquirer for financial reporting purposes based on key deciding factors such as a majority ownership and majority of the board of director seats. Accordingly, the acquisition of Grubhub Holdings Inc. has been accounted for as a business combination. The results of operations of Grubhub Holdings Inc. have been included in the Company’s financial statements since August 9, 2013. Grubhub Holdings Inc. provides online food ordering through its website grubhub.com, and also operates allmenus.com, a website that stored and displayed approximately 275,000 menus at the time of acquisition. The Merger has expanded the Company’s existing markets and access to new customers and created revenue and cost synergies which management believes will contribute to future profits. The fair value of the equity issued to Grubhub Holdings Inc. in connection with the Merger was approximately $421.5 million. The value of the equity was determined using the estimated fair value of the stock of Grubhub Holdings Inc. at the Merger Date based on a valuation of Grubhub Holdings Inc. performed by management. The assets acquired and liabilities assumed were recorded at their estimated fair values as of August 8, 2013. The fair value of the equity of $421.5 million included approximately $11.0 million related to the fair value of the replacement awards that were attributed to the pre-combination service period for Grubhub Holdings Inc. option holders. The fair value of the replacement awards was determined using the Black-Scholes option pricing model. Post combination expense of $12.5 million is recognized post-Merger for the unrecognized compensation expense related to Grubhub Holdings Inc. stock options. See Note 9, “ Stock-Based Compensation”, The excess of the consideration transferred in the acquisition over the net amounts assigned to the fair value of the assets acquired was recorded as goodwill, which represents the opportunity to expand existing markets and access new customers and to create revenue and cost synergies that management believes will contribute to future profits. The goodwill is not deductible for income tax purposes. The Company incurred certain expenses directly and indirectly related to the Merger of $4.7 million during the year ended December 31, 2013, which were recognized in general and administrative expense within the consolidated statements of operations. The following table summarizes the August 8, 2013 acquisition-date fair value of the assets and liabilities acquired in connection with the Grubhub Holdings Inc. business combination: (in thousands) Cash and cash equivalents $ 13,266 Accounts receivable 2,108 Other identifiable assets 4,422 Customer and vendor relationships 167,450 Deferred tax asset 4,013 Deferred tax liability (88,937 ) Developed technology 5,143 Goodwill 239,346 Liabilities assumed (10,602 ) Trademarks 85,276 Total net assets acquired $ 421,485 The estimated fair values of the intangible assets acquired were determined based on a combination of the income, cost, and market approaches to measure the fair value of the customer (restaurant) and vendor relationships, developed technology and trademarks. The fair value of the trademarks was measured based on the relief from royalty method. The cost approach, specifically the cost to recreate method, was used to value the developed technology. The income approach, specifically the multi-period excess earnings method, was used to value the customer (restaurant) and vendor relationships. These fair value measurements were based on significant inputs not observable in the market and thus represent Level 3 measurements within the fair value hierarchy.

Marketable Securities

Marketable Securities	12 Months Ended
	Dec. 31, 2015
Investments Debt And Equity Securities [Abstract]
Marketable Securities	4. Marketable Securities The amortized cost, unrealized gains and losses and estimated fair value of the Company’s held-to-maturity marketable securities as of December 31, 2015 and 2014 were as follows: December 31, 2015 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value (in thousands) Cash and cash equivalents Commercial paper $ 22,744 $ — $ (5 ) $ 22,739 Short term investments Commercial paper 90,949 — (102 ) 90,847 Corporate bonds 41,503 9 (39 ) 41,473 U.S. government agency bonds 8,996 8 — 9,004 Total $ 164,192 $ 17 $ (146 ) $ 164,063 December 31, 2014 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value (in thousands) Cash and cash equivalents Corporate bonds $ 1,882 $ 1 $ (1 ) $ 1,882 Short term investments Commercial paper 38,081 — (26 ) 38,055 Corporate bonds 73,260 2 (64 ) 73,198 Total $ 113,223 $ 3 $ (91 ) $ 113,135 All of the Company’s marketable securities were classified as held-to-maturity investments and have maturities within one year of December 31, 2015. The gross unrealized losses, estimated fair value and length of time the individual marketable securities were in a continuous loss position for those marketable securities in an unrealized loss position as of December 31, 2015 and 2014 were as follows: December 31, 2015 Less Than 12 Months 12 Months or Greater Total Estimated Fair Value Unrealized Loss Estimated Fair Value Unrealized Estimated Fair Value Unrealized Loss (in thousands) Commercial paper $ 113,586 $ (107 ) $ — $ — $ 113,586 $ (107 ) Corporate bonds 31,952 (39 ) — — 31,952 (39 ) Total $ 145,538 $ (146 ) $ — $ — $ 145,538 $ (146 ) December 31, 2014 Less Than 12 Months 12 Months or Greater Total Estimated Fair Value Unrealized Loss Estimated Fair Value Unrealized Estimated Fair Value Unrealized Loss (in thousands) Commercial paper $ 38,055 $ (26 ) $ — $ — $ 38,055 $ (26 ) Corporate bonds 64,557 (65 ) — — 64,557 (65 ) Total $ 102,612 $ (91 ) $ — $ — $ 102,612 $ (91 ) During the years ended December 31, 2015 and 2014, the Company did not recognize any other-than-temporary impairment losses related to its marketable securities. The Company did not have any marketable securities prior to July 1, 2014. The Company’s marketable securities are classified within Level 2 of the fair value hierarchy (see Note 14, “ Fair Value Measurement”,

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	5. Related Party Transactions Due to Related Party During the year ended December 31, 2013, the Company had a cash management program with Aramark whereby all payroll and related costs were funded by Aramark and all cumulative excess cash balances were deposited with Aramark. The program was terminated in 2013 and no balance was due as of December 31, 2013. Corporate Services Agreement The Company had an arrangement with Aramark pursuant to which Aramark would provide support to the Company for certain corporate, accounting, information technology and other administrative services. Total expenses incurred under this arrangement were $0.1 million during the years ended December 31, 2013. The arrangement was terminated in 2013.

Goodwill and Acquired Intangibl

Goodwill and Acquired Intangible Assets	12 Months Ended
	Dec. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Acquired Intangible Assets	6. Goodwill and Acquired Intangible Assets The components of acquired intangible assets as of December 31, 2015 and 2014 were as follows: December 31, 2015 December 31, 2014 Gross Carrying Amount Accumulated Amortization Net Value Gross Amount Accumulated Amortization Net Value (in thousands) Developed technology $ 9,819 $ (6,288 ) $ 3,531 $ 5,143 $ (2,392 ) $ 2,751 Customer and vendor relationships, databases 236,238 (44,192 ) 192,046 191,979 (30,067 ) 161,912 Trademarks 529 (215 ) 314 — — — Total amortizable intangible assets 246,586 (50,695 ) 195,891 197,122 (32,459 ) 164,663 Indefinite-lived trademarks 89,676 — 89,676 89,676 — 89,676 Total acquired intangible assets $ 336,262 $ (50,695 ) $ 285,567 $ 286,798 $ (32,459 ) $ 254,339 Amortization expense for acquired intangible assets was $18.2 million, $14.1 million and $6.9 million for the years ended December 31, 2015, 2014 and 2013, respectively. The changes in the carrying amount of goodwill for the years ended December 31, 2015 and 2014 were as follows. Goodwill Accumulated Impairment Losses Net Book Value (in thousands) Balance as of December 31, 2013 $ 352,788 $ — $ 352,788 Balance as of December 31, 2014 352,788 — 352,788 Acquisitions 43,432 — 43,432 Balance as of December 31, 2015 $ 396,220 $ — $ 396,220 During the year ended December 31, 2015, the Company recorded additions to acquired intangible assets of $49.5 million as a result of the acquisitions of DiningIn, Restaurants on the Run and Delivered Dish. The components of the acquired intangibles assets added during the year ended December 31, 2015 were as follows: Year Ended December 31, 2015 Weighted-Average Amortization Period (in thousands) (years) Customer and vendor relationships $ 44,259 18.7 Developed technology 4,676 1.7 Trademarks 529 1.8 Total $ 49,464 Estimated future amortization expense of acquired intangible assets as of December 31, 2015 was as follows: (in thousands) 2016 $ 17,664 2017 15,331 2018 14,455 2019 14,455 2020 11,249 Thereafter 122,737 Total $ 195,891 As of December 31, 2015, the estimated remaining weighted-average useful life of the Company’s acquired intangibles was 14.3 years. The Company recognizes amortization expense for acquired intangibles on a straight-line basis.

Property and Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2015
Property Plant And Equipment [Abstract]
Property and Equipment	7. Property and Equipment The components of the Company’s property and equipment as of December 31, 2015 and 2014 were as follows: December 31, 2015 December 31, 2014 (in thousands) Computer equipment $ 10,080 $ 12,114 Delivery equipment 555 — Furniture and fixtures 2,092 1,876 Developed software 11,129 12,378 Purchased software 361 2,149 Leasehold improvements 6,050 5,900 Property and equipment 30,267 34,417 Accumulated amortization and depreciation (11,185 ) (18,414 ) Property and equipment, net $ 19,082 $ 16,003 The gross carrying amount and accumulated amortization and depreciation of the Company’s property and equipment as of December 31, 2015 have been adjusted for certain fully depreciated developed and purchased software and computer equipment assets that were disposed of with the migration of nearly all of the Seamless consumer diner traffic to a new web and mobile platform during the second quarter of 2015 and certain other computer equipment that were fully depreciated and disposed of during the fourth quarter of 2015. During the year ended December 31, 2015, the Company recorded approximately $1.9 million of accelerated depreciation and amortization expense related to these retired assets. The Company recorded depreciation and amortization expense for property and equipment other than developed software for the years ended December 31, 2015, 2014 and 2013 of $5.7 million, $5.7 million and $4.0 million, respectively. The Company capitalized developed software costs of $8.0 million, $3.6 million and $2.6 million for the years ended December 31, 2015, 2014 and 2013, respectively. Amortization expense for developed software costs, recognized in depreciation and amortization in the consolidated statements of operations, for the years ended December 31, 2015, 2014 and 2013 was $4.1 million, $2.9 million and $2.6 million, respectively.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	8. Commitments and Contingencies Office Facility Leases The Company has various operating lease agreements for its office facilities which expire at various dates through March 2026. The terms of the lease agreements provide for rental payments on a graduated basis. The Company can, after the initial lease term, renew its leases under right of first offer terms at fair value at the time of renewal for a period of five years. The Company recognizes rent expense on a straight-line basis over the lease term. Rental expense, primarily for leased office space under the operating lease commitments, was $4.1 million, $3.6 million and $2.5 million for the years ended December 31, 2015, 2014 and 2013, respectively. Future minimum lease payments under the Company’s operating lease agreements that have initial or remaining non-cancelable lease terms in excess of one year as of December 31, 2015 were as follows: (in thousands) 2016 $ 3,618 2017 3,938 2018 4,499 2019 4,698 2020 4,762 Thereafter 19,567 Total $ 41,082 The table above does not reflect the Company’s option to exercise early termination rights or the payment of related early termination fees. 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 (the “Court”), Case No. 3:11-cv-1810 (“’1810 action”). In September 2011, Ameranth amended its complaint in the ’1810 action to also allege patent infringement against Seamless North America, LLC. Ameranth alleged that the Grubhub Holdings Inc. and Seamless North America, LLC ordering systems, products and services infringe claims 12 through 15 of U.S. Patent No. 6,384,850 (“’850 patent”) and claims 11 and 15 of U.S. Patent No. 6,871,325 (“’325 patent”). In March 2012, Ameranth initiated eight additional actions for infringement of a third, related patent, U.S. Patent No. 8,146,077 (“’077 patent”), in the same forum, including separate actions against Grubhub Holdings Inc., Case No. 3:12-cv-739 (“’739 action”), and Seamless North America, LLC, Case No. 3:12-cv-737 (“’737 action”). In August 2012, the Court severed the claims against Grubhub Holdings Inc. and Seamless North America, LLC in the ’1810 action and consolidated them with the ’739 action and the ’737 action, respectively. Later, the Court consolidated these separate cases against Grubhub Holdings Inc. and Seamless North America, LLC, along with the approximately 40 other cases Ameranth filed in the same district, with the original ’1810 action. In their answers, Grubhub Holdings Inc. and Seamless North America, LLC denied infringement and interposed various defenses, including non-infringement, invalidity, unenforceability and inequitable conduct. No trial date has been set for this case and the consolidated district court case remains stayed. 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. However, the Company is unable to predict the likelihood of success of Ameranth’s infringement claims and is unable to predict the likelihood of success of its counterclaims. The Company has not recorded an accrual related to this lawsuit as of December 31, 2015, as it does not believe a material loss is probable. It is a reasonable possibility that a loss may be incurred; however, the possible range of loss is not estimable given the early stage of the dispute and the uncertainty as to whether the claims at issue are with or without merit, will be settled out of court, or will be determined in the Company’s favor, whether the Company may be required to expend significant management time and financial resources on the defense of such claims, and whether the Company will be able to recover any losses under its insurance policies. 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. Indemnification In connection with the Merger in August 2013 Restructuring On November 20, 2013, the Company announced plans to close its Sandy, Utah office location in 2014. The Company recorded a restructuring accrual in the consolidated balance sheets for severance and payroll related benefits and other facility closure costs as a result of the restructuring announcement. The amounts recorded represented the service vesting requirements for identified employees who worked for various periods beyond the communication date and related lease termination costs. The facility was closed on November 30, 2014; however, certain employees worked until January 2, 2015. During the year ended December 31, 2014, total restructuring costs incurred were approximately $1.3 million, including expense of $0.5 million related to the termination of the Sandy, Utah office lease agreement. During the year ended December 31, 2013, total restructuring costs incurred were $0.2 million. Restructuring expense was recognized in general and administrative expense in the consolidated statements of operations. The Company did not incur any restructuring expense related to the Sandy, Utah facility closure during the year ended December 31, 2015. The following table summarizes the Company’s restructuring activity during the years ended December 31, 2015 and 2014: (in thousands) Restructuring accrual balance at December 31, 2013 $ 176 Restructuring expense 1,313 Cash payments (741 ) Restructuring accrual balance at December 31, 2014 748 Restructuring expense — Cash payments (748 ) Restructuring accrual balance at December 31, 2015 $ —

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	9. Stock-Based Compensation In May 2015, the Company’s stockholders approved the Grubhub Inc. 2015 Long-Term Incentive Plan (the “2015 Plan”), pursuant to which the Compensation Committee of the Board of Directors may grant stock options, stock appreciation rights, restricted stock awards, restricted stock units, performance awards and other stock-based and cash-based awards. On May 20, 2015, the Company filed a registration statement on Form S-8 to register up to 14,256,901 shares of common stock reserved for issuance pursuant to awards granted under the 2015 Plan. Effective May 20, 2015, no further grants will be made under the Company’s 2013 Omnibus Incentive Plan (the “2013 Plan”). As of December 31, 2015, there were 8,637,093 shares of common stock authorized and available . The Company has granted stock options, restricted stock units and restricted stock awards under its incentive plans. The Company recognizes compensation expense based on estimated grant date fair values for all stock-based awards issued to employees and directors, including stock options, restricted stock units and restricted stock awards. For all stock options outstanding as of December 31, 2015, the exercise price of the stock options equals the fair value of the stock option on the grant date. The stock options and restricted stock units vest over different lengths of time, but generally over 4 years, and are subject to forfeiture upon termination of employment prior to vesting. The maximum term for stock options issued to employees under the 2015 Plan and the 2013 Plan is 10 years, and they expire 10 years from the date of grant. Compensation expense for stock options, restricted stock units and restricted stock awards is recognized ratably over the vesting period. The rights granted to the recipient of a restricted stock unit generally accrue over the vesting period. Participants holding restricted stock units are not entitled to any ordinary cash dividends paid by the Company with respect to such shares unless otherwise provided by the terms of the award. The Company does not expect to pay any dividends in the foreseeable future. The recipient of a restricted stock award shall have all of the rights of a holder of shares of the Company’s common stock, including the right to receive dividends, the right to vote such shares and, upon the full vesting of the restricted stock awards, the right to tender such shares. The payment of any dividends will be deferred until the restricted stock awards have fully vested. The restricted stock awards outstanding as of December 31, 2015, generally vest over 2 years and are subject to forfeiture upon termination of employment prior to vesting unless otherwise provided in the terms of the award agreement. As part of the Reorganization Agreement, the Company was required to replace Grubhub Holdings Inc.’s share-based payment awards. The fair value of the replacement awards attributable to pre-combination services at the time of the Merger was approximately $11.0 million, which was included as additional consideration transferred in the business combination in the total purchase price of $421.5 million. The fair value of the replacement options attributable to post combination services was approximately $12.5 million and is recognized as compensation cost in the Company’s post-Merger consolidated financial statements over the remaining vesting period. Stock Options The Company granted 2,542,523, 2,019,413 and 3,698,708 stock options during the years ended December 31, 2015, 2014 and 2013, respectively. The fair value of each stock option award was estimated based on the assumptions below as of the grant date using the Black-Scholes-Merton option pricing model. Expected volatilities are based on a combination of the historical and implied volatilities of comparable publicly-traded companies and the historical volatility of the Company’s own common stock due to its limited trading history. in April 2014 2015 2014 2013 Weighted-average fair value options granted $ 14.66 $ 13.87 $ 3.97 Average risk-free interest rate 1.65 % 1.97 % 1.41 % Expected stock price volatilities (a) 48.4 % 50.3 % 50.7 % Dividend yield None None None Expected stock option life (years) 6.07 6.26 5.20 (a) There was no active external or internal market for the Company’s common stock prior to the IPO. Due to the Company’s limited trading history, the Company estimated expected volatility for the years ended December 31, 2015 and 2014 based on a combination of the historical and implied volatilities of comparable publicly-traded companies and the historical volatility of the Company’s own common stock. During the year ended December 31, 2013, the expected volatility was based on the historical and implied volatilities of comparable publicly-traded companies as there was no trading history for the Company’s own common stock. Stock option awards as of December 31, 2015 and 2014, and changes during the year ended December 31, 2015, were as follows: Options Weighted-Average Exercise Price Aggregate Intrinsic Value (thousands) Weighted-Average Exercise (years) Outstanding at December 31, 2014 6,180,795 $ 8.49 $ 172,661 7.87 Granted 2,542,523 30.99 Forfeited (1,066,623 ) 18.31 Exercised (2,578,398 ) 4.63 Outstanding at December 31, 2015 5,078,297 19.66 41,107 8.21 Vested and expected to vest at December 31, 2015 3,522,623 17.77 32,195 8.08 Exercisable at December 31, 2015 1,349,375 $ 8.23 $ 23,208 6.62 The aggregate intrinsic value in the table above represents the total pre-tax intrinsic value (the difference between the fair value of the common stock and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their in-the-money options on each date. This amount will change in future periods based on the fair value of the Company’s stock and the number of options outstanding. The aggregate intrinsic value of awards exercised during the years ended December 31, 2015, 2014 and 2013 was $87.6 million, $74.0 million and $3.4 million, respectively. The Company recorded compensation expense for stock options of $9.9 million, $9.4 million and $4.9 million for the years ended December 31, 2015, 2014 and 2013, respectively. During the years ended December 31, 2015 and 2014, the Company capitalized $0.5 million and $0.1 million of stock-based compensation expense as website and software development costs, respectively. As of December, 2015, total unrecognized compensation cost, adjusted for estimated forfeitures, related to non-vested stock options was $25.7 million and is expected to be recognized over a weighted-average period of 3.2 years. During the years ended December 31, 2015 and 2014, the Company reported excess tax benefits as a decrease in cash flows from operations and an increase in cash flows from financing activities of $27.8 million and $13.0 million, respectively. Excess tax benefits were suspended during the year ended December 31, 2013 due to net operating losses. Excess tax benefits reflect the total of the individual stock option exercise transactions in which the reduction to the Company’s income tax liability is greater than the deferred tax assets that were previously recorded. Restricted Stock Units and Restricted Stock Awards Non-vested restricted stock unit awards as of December 31, 2015 and 2014, and changes during the year ended December 31, 2015 were as follows: Restricted Stock Units Restricted Stock Awards Shares Weighted-Average Grant Date Fair Value Shares Weighted-Average Grant Value Outstanding at December 31, 2014 2,899 $ 31.90 — $ — Granted 896,906 27.85 101,616 42.01 Forfeited (11,322 ) 28.98 — — Vested — — (33,872 ) 42.01 Outstanding at December 31, 2015 888,483 $ 27.85 67,744 $ 42.01 During the year ended December 31, 2015, compensation expense recognized related to restricted stock awards and restricted stock units was $1.9 million and $1.7 million, respectively. During the year ended December 31, 2014, compensation expense recognized related to restricted stock units was nominal. There were no non-vested restricted stock units or related expense during the years ended December 31, 2013. There were no non-vested restricted stock awards or related expense during the years ended December 31, 2014 and 2013. The aggregate fair value of restricted stock awards that vested during the year ended December 31, 2015 was $1.4 million. As of December, 2015, $13.8 million of total unrecognized compensation cost, adjusted for estimated forfeitures, related to 888,483 non-vested restricted stock units with a weighted-average grant date fair value of $27.85 is expected to be recognized over a weighted-average period of 3.7 years. As of December 31, 2015, $1.7 million of total unrecognized compensation cost related to 67,744 non-vested restricted stock awards with weighted-average grant date fair values of $42.01 is expected to be recognized over a weighted-average period of 1.2 years. The fair value of these awards was determined based on the Company’s stock price at the grant date and assumes no expected dividend payments through the vesting period. There were no excess tax benefits related to restricted stock units or restricted stock awards during the years ended December 31, 2015, 2014 and 2013.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	10. Income Taxes The Company files income tax returns in the U.S. federal, the United Kingdom and various state jurisdictions. For the years ended December 31, 2015, 2014 and 2013, the income tax provision was comprised of the following: Year Ended December 31, 2015 2014 2013 (in thousands) Current: Federal $ 20,947 $ 8,073 $ 2,912 State 6,260 7,610 3,056 Foreign 480 426 468 Total current 27,687 16,109 6,436 Deferred: Federal (1,534 ) 1,056 1,300 State (2,301 ) 3,556 406 Total deferred (3,835 ) 4,612 1,706 Total income tax expense $ 23,852 $ 20,721 $ 8,142 Income before provision for income taxes for the years ended December 31, 2015, 2014 and 2013, was as follows: Year Ended December 31, 2015 2014 2013 (in thousands) Domestic source $ 59,705 $ 43,069 $ 12,986 Foreign source 2,224 1,915 1,903 Income before provision for income taxes $ 61,929 $ 44,984 $ 14,889 The following is a reconciliation of income taxes computed at the U.S. federal statutory rate to the income taxes reported in the consolidated statements of operations for the years ended December 31, 2015, 2014 and 2013: Year Ended December 31, 2015 2014 2013 (in thousands) Income tax expense at statutory rate $ 21,675 $ 15,747 $ 5,211 State income taxes 2,577 8,038 2,522 Deferred tax impact of reorganization — (2,382 ) — Nondeductible transaction costs — — 1,148 Tax benefit of partnership status — — (726 ) Valuation allowance reversal — — (502 ) Research and development tax credit (345 ) — — Foreign rate differential (328 ) (253 ) (220 ) Deferred tax true-up 69 — — All other 204 (429 ) 709 Total income tax expense $ 23,852 $ 20,721 $ 8,142 On December 31, 2014, the Company undertook a series of transactions intended to simplify its legal and tax structure in the U.S. The result of the reorganization was a combination of Grubhub Holdings Inc. and Seamless North America, LLC, which resulted in the deemed liquidation of the Seamless North America, LLC partnership status for tax purposes. The reorganization resulted in a net income tax benefit of $0.4 million for the year ended December 31, 2014. The income tax benefit consisted of a deferred tax benefit of $2.2 million as a result of converting the Seamless North America, LLC partnership into a division of Grubhub Holdings Inc., partially offset by an increase in deferred tax expense of $1.8 million as a result of the adjusted deferred state tax rate applicable to the Company’s U.S. operations. The Company recorded a $2.0 million increase in deferred tax expense in 2014 as a result of a change in state tax law. The tax effects of temporary differences giving rise to deferred income tax assets and liabilities as of December 31, 2015 and 2014 were as follows: As of December 31, 2015 2014 (in thousands) Deferred tax assets: Loss and credit carryforwards $ 5,134 $ 7,212 Accrued expenses 1,934 2,221 Stock-based compensation 8,330 7,752 Total deferred tax assets 15,398 17,185 Valuation allowance (910 ) (910 ) Net deferred tax assets 14,488 16,275 Deferred tax liabilities: Fixed assets (2,269 ) (2,721 ) Intangible assets (99,803 ) (104,973 ) Total deferred tax liabilities (102,072 ) (107,694 ) Net deferred tax liability $ (87,584 ) $ (91,419 ) A partial valuation reserve of $0.9 million was recorded as of both December 31, 2015 and 2014, against certain state-only credits as those credits have a short carryover period and the Company believes that this portion of the credit carryovers will more likely than not expire before they are utilized. Classification of net deferred tax assets (liabilities) on the consolidated balance sheets as of December 31, 2015 and 2014 was as follows: As of December 31, 2015 2014 (in thousands) Non-current liabilities $ (87,584 ) $ (91,419 ) Total deferred tax liability $ (87,584 ) $ (91,419 ) The Company has early adopted ASU 2015-17, relating to the presentation of deferred tax assets and deferred tax liabilities as non-current in the consolidated balance sheets, in the fourth quarter of 2015. The consolidated balance sheet as of the year ended December, 31, 2014, has been retrospectively adjusted to reflect the change in presentation of $0.8 million of current deferred tax assets. The Company has not provided U.S. income tax on the accumulated earnings of its U.K. subsidiary, Seamless Europe, Ltd. of approximately $7.7 million as of December 31, 2015, as it intends to permanently reinvest those undistributed earnings into future operations in that country. The Company estimates the potential additional U.S. tax liabilities that would result from the complete repatriation of those accumulated earnings to be approximately $1.9 million as of December 31, 2015. The Company had the following tax loss and credit carryforwards as of December 31, 2015 and 2014: 2015 2014 Beginning Year of Expiration (in thousands) U.S. federal loss carryforwards $ 3,284 $ 7,706 2027 U.S. state and local loss carryforwards 5,753 9,856 2027 U.S. contribution carryforwards — 166 2015 Illinois Edge Credits (a) 3,829 2,938 2017 New York unincorporated business tax credits (a) — 875 2021 (a) Amounts are before the federal benefit of state tax In addition to the federal and state NOL carryforwards shown above, as of December 31, 2015 the Company has $47.5 million in additional loss carryovers attributable to excess tax benefits on stock option exercises that will be recorded to additional paid-in capital when those losses are deemed utilized applying the “with and without” method of accounting for excess tax benefits. During the year ended December 31, 2015, the Internal Revenue Service completed an audit of Grubhub Inc.’s and its subsidiaries’ tax return for the year ended December 31, 2013 and proposed no changes. The Company is currently under examination in Illinois for corporate income tax returns for the tax years ended December 31, 2013 and 2012. The Company cannot predict with certainty whether there will be any additional tax liabilities, penalties and/or interest as a result of the audit. The Company’s tax returns are subject to the normal statute of limitations, three years from the filing date for federal income tax purposes. The federal and state statute of limitations generally remain open for years in which tax losses are generated until three years from the year those losses are utilized. Under these rules, the 2007 and later year NOLs of Slick City Media, Inc. are still subject to audit by the IRS and state and local jurisdictions. Also, the 2007 and later year NOLs of Grubhub Holdings Inc. and its acquired businesses are still subject to audit by the IRS and state and local jurisdictions. The September 30, 2012 and later period U.K. returns of Seamless Europe Ltd. are subject to exam by the U.K. tax authorities. The Company is subject to taxation in the U.S. federal and various state jurisdictions. Significant judgment is required in determining the provision for income taxes and recording the related income tax assets and liabilities. The Company’s practice for accounting for uncertainty in income taxes is to recognize the financial statement benefit of a tax position only after determining that the relevant tax authority would more likely than not sustain the position following an audit. For tax positions meeting the more-likely-than-not criteria, the amount recognized in the financial statements is the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement with the relevant tax authority. The following table summarizes the Company’s unrecognized tax benefit activity during the years ended December 31, 2015 and 2014, excluding the related accrual for interest: As of December 31, 2015 2014 (in thousands) Balance at beginning of period $ 3,188 $ 1,097 Reductions for tax positions of prior years (296 ) (491 ) Additions for tax positions of prior years 40 50 Additions for tax positions of the current year — 2,532 Balance at end of period $ 2,932 $ 3,188 The Company records interest and penalties, if any, as a component of its income tax expense in the consolidated statements of operations. No interest expense or penalties were recognized during the years ended December 31, 2015 or 2014. The non-current income tax liabilities are recorded in long-term liabilities in the consolidated balance sheets. At December 31, 2015, the Company did not anticipate any significant adjustments to its unrecognized tax benefits caused by the settlement of tax examinations or other factors, within the next twelve months. Included in the consolidated balance sheets at December 31, 2015 and 2014 were deferred tax assets that relate to the potential settlement of these unrecognized tax benefits. After consideration of these amounts, $1.0 million of the amount accrued at each of December 31, 2015 and 2014, would impact the effective tax rate if reversed.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2015
Equity [Abstract]
Stockholders' Equity	11. Stockholders’ Equity As of December 31, 2015 and 2014, the Company was authorized to issue two classes of stock: common stock and Series A Preferred Stock. On April 4, 2014, the Company completed the IPO in which it issued and sold 4,000,000 shares of common stock at a public offering price of $26.00 per share. The Company received net proceeds of $94.9 million after deducting underwriting discounts and commissions of $6.5 million and other offering expenses of approximately $2.6 million. Upon the closing of the IPO, the stockholder’s agreement ceased to be in effect. On September 3, 2014, the Company completed a follow-on offering in which it issued and sold 1,250,000 shares of common stock at a public offering price of $40.25 per share. The Company received net proceeds of $47.6 million after deducting underwriting discounts and commissions of $1.9 million and other offering expenses of approximately $0.8 million. These expenses were recorded against the proceeds received from the follow-on offering. Common Stock Each holder of common stock has one vote per share of common stock held on all matters that are submitted for stockholder vote. At December 31, 2015 and 2014, there were 500,000,000 shares of common stock authorized. At December 31, 2015 and 2014, there were 84,979,869 and 81,905,325 shares of common stock issued and outstanding, respectively. The Company did not hold any shares as treasury shares as of December 31, 2015 and 2014. Series A Preferred Stock The Company was authorized to issue 25,000,000 shares of preferred stock as of December 31, 2015 and 2014. Upon the closing of the IPO on April 4, 2014, all shares of the Company’s then-outstanding convertible Series A Preferred Stock automatically converted on a one-for-one basis into an aggregate of 19,284,113 shares of common stock. There were no issued or outstanding shares of preferred stock as of December 31, 2015 and 2014. Redeemable Common Stock The put rights that would have required the Company to repurchase the Company’s then outstanding redeemable common stock at fair value (as defined in the stockholders agreement) determined at the redemption date were terminated and the shares converted on a one-for-one basis into an aggregate of 1,344,236 shares of common stock upon the closing of the IPO on April 4, 2014.

Retirement Plan

Retirement Plan	12 Months Ended
	Dec. 31, 2015
Compensation And Retirement Disclosure [Abstract]
Retirement Plan	12. Retirement Plan Beginning February 1, 2012, the Company has maintained a defined contribution plan for employees. The plan is qualified under section 401(k) of the Internal Revenue Code. For the years ended December 31, 2015, 2014 and 2013, the Company matched 100% of the first 3% of employees’ contributions and 50% of the next 2% of employees’ contributions that were made. The Company may also make discretionary profit sharing contributions as determined by the Company’s Board of Directors. The Company’s matching contributions to the plan were $1.3 million, $1.0 million and $0.7 million during the years ended December 31, 2015, 2014 and 2013, respectively.

Earnings Per Share Attributable

Earnings Per Share Attributable to Common Stockholders	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share Attributable to Common Stockholders	13. Earnings Per Share Attributable to Common Stockholders Basic earnings per share is computed by dividing net income attributable to common stockholders by the weighted-average number of common shares outstanding during the period without consideration for common stock equivalents. Diluted net income per share attributable to common stockholders is computed by dividing net income by the weighted-average number of common shares outstanding during the period and potentially dilutive common stock equivalents, including stock options, restricted stock awards and restricted stock units, except in cases where the effect of the common stock equivalent would be antidilutive. Potential common stock equivalents consist of common stock issuable upon exercise of stock options and vesting of restricted stock units and restricted stock awards using the treasury stock method and common stock issuable upon conversion of the Series A Preferred Stock. Upon the closing of the IPO, all shares of the Company’s then-outstanding convertible Series A Preferred Stock automatically converted into an aggregate of 19,284,113 shares of common stock. The following table presents the calculation of basic and diluted net income per share attributable to common stockholders for the years ended December 31, 2015, 2014 and 2013: Year Ended December 31, 2015 Income (Numerator) Shares (Denominator) Per Share Amount (in thousands, except per share data) Basic EPS Net income attributable to common stockholders $ 38,077 84,076 $ 0.45 Effect of Dilutive Securities Preferred stock — — Stock options — 1,594 Restricted stock units and restricted stock awards — 36 Diluted EPS Net income attributable to common stockholders $ 38,077 85,706 $ 0.44 Year Ended December 31, 2014 Income (Numerator) Shares (Denominator) Per Share Amount (in thousands, except per share data) Net income $ 24,263 Preferred stock tax distributions (320 ) Basic EPS Net income attributable to common stockholders 23,943 73,571 $ 0.33 Effect of Dilutive Securities Preferred stock 320 4,980 Stock options — 3,147 Restricted stock units and restricted stock awards — — Diluted EPS Net income attributable to common stockholders $ 24,263 81,698 $ 0.30 Year Ended December 31, 2013 Income (Numerator) Shares (Denominator) Per Share Amount (in thousands, except per share data) Net income $ 6,747 Preferred stock tax distributions (1,073 ) Basic EPS Net income attributable to common stockholders 5,674 40,681 $ 0.14 Effect of Dilutive Securities Preferred stock 1,073 14,390 Stock options — 1,574 Diluted EPS Net income attributable to common stockholders $ 6,747 56,645 $ 0.12 The number of shares of common stock underlying stock-based awards excluded from the calculation of diluted net income per share attributable to common stockholders because their effect would have been antidilutive for the years ended December 31, 2015, 2014 and 2013 were as follows: Year Ended December 31, 2015 2014 2013 Anti-dilutive shares underlying stock-based awards: Stock options 2,380,813 407,328 477,452 Restricted stock awards — — — Restricted stock units 464,930 657 — There were no

Fair Value Measurement

Fair Value Measurement	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurement	14. Fair Value Measurement Certain assets and liabilities are required to be recorded at fair value on a recurring basis. Accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. The standards also establish a fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The accounting guidance for fair value measurements prioritizes valuation methodologies based on the reliability of the inputs in the following three-tier value hierarchy: Level 1 Quoted prices in active markets for identical assets or liabilities. Level 2 Assets and liabilities valued based on observable market data for similar instruments, such as quoted prices for similar assets or liabilities. Level 3 Unobservable inputs that are supported by little or no market activity; instruments valued based on the best available data, some of which is internally developed, and considers risk premiums that a market participant would require. The Company applied the following methods and assumptions in estimating its fair value measurements: the Company’s commercial paper, investments in corporate and U.S. government agency bonds and certain money market funds are classified as Level 2 within the fair value hierarchy because they are valued using inputs other than quoted prices in active markets that are observable directly or indirectly. Accounts receivable and accounts payable approximate fair value due to their generally short-term maturities. The following table presents the balances of assets measured at fair value on a recurring basis as of December 31, 2015 and 2014: December 31, 2015 December 31, 2014 Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 (in thousands) Money market funds $ — $ 1,083 $ — $ — $ 1,386 $ — Commercial paper — 113,586 — — 38,055 — Corporate bonds — 41,473 — — 75,080 — U.S. government agency bonds — 9,004 — — — — Total $ — $ 165,146 $ — $ — $ 114,521 $ — In addition to assets and liabilities that are recorded at fair value on a recurring basis, the Company is required to record certain assets and liabilities at fair value on a nonrecurring basis, generally as a result of acquisitions. See Note 3, “ Acquisitions,”

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	15. Subsequent Events On January 22, 2016, the Board of Directors of the Company approved a program that authorizes the repurchase of up to $100 million of the Company’s common stock exclusive of any fees, commissions or other expenses relating to such repurchases through open market purchases or privately negotiated transactions at the prevailing market price at the time of purchase. The repurchased stock may be retired or held as authorized but unissued treasury shares. The repurchase authorizations do no obligate the Company to acquire any particular amount of common stock or adopt any particular method of repurchase and may be modified, suspended or terminated at any time at the Company’s discretion. Repurchased and retired shares will result in an immediate reduction of the outstanding shares used to calculate the weighted-average common shares outstanding for basic and diluted net income per share at the time of the transaction. From January 1, 2016 through February 19, 2016, the Company repurchased and retired $9.8 million of its common stock as follows: Period Total Number of Shares Purchased Average Price Paid per Share Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs Dollar Value of Shares that May Yet be Purchased Under the Plans or (in thousands) January 1, 2016 - January 31, 2016 148,073 $ 18.67 148,073 $ 97,235 February 1, 2016 - February 19, 2016 358,600 19.51 358,600 90,239 Total 506,673 $ 19.26 506,673

Summary of Significant Accoun23

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation	Basis of Presentation and Principles of Consolidation The Company’s consolidated financial statements were prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The accompanying consolidated financial statements include all wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. The consolidated statements of operations include the results of entities acquired from the dates of the acquisitions for accounting purposes.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and the related disclosures at the date of the financial statements, as well as the reported amounts of revenue and expenses during the periods presented. Estimates include revenue recognition, the allowance for doubtful accounts, website and internal-use software development costs, goodwill, depreciable lives of property and equipment, recoverability of intangible assets with finite lives and other long-lived assets and stock-based compensation. To the extent there are material differences between these estimates, judgments or assumptions and actual results, the Company’s consolidated financial statements will be affected. In many cases, the accounting treatment of a particular transaction is specifically dictated by GAAP and does not require management’s judgment in its application.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash includes demand deposits with banks or financial institutions. Cash equivalents include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and that are so near their maturity that they present minimal risk of changes in value because of changes in interest rates. The Company’s cash equivalents include only investments with original maturities of three months or less. The Company regularly maintains cash in excess of federally insured limits at financial institutions.
Marketable Securities	Marketable Securities Marketable securities consist primarily of commercial paper and investment grade U.S. and non-U.S.-issued corporate and U.S. government agency debt securities. The Company invests in a diversified portfolio of marketable securities and limits the concentration of its investment in any particular security. Marketable securities with original maturities of three months or less are included in cash and cash equivalents and marketable securities with original maturities greater than three months, but less than one year, are included in short term investments on the consolidated balance sheets. The Company determines the classification of its marketable securities as available-for-sale or held-to-maturity at the time of purchase and reassesses these determinations at each balance sheet date. Debt securities are classified as held-to-maturity when the Company has the intent to hold the securities to maturity. Held-to-maturity securities are stated at amortized cost and are periodically assessed for other-than-temporary impairment. The amortized cost of debt securities is adjusted for the amortization of premiums and accretion of discounts to maturity, which is recognized as interest income within general and administrative expense in the consolidated statements of operations. Interest income is recognized when earned.
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Accumulated other comprehensive loss consists of foreign currency translation adjustments. The financial statements of the Company’s U.K. subsidiary are translated from their functional currency into U.S. dollars. Assets and liabilities are translated at period end rates of exchange, and revenue and expenses are translated using average rates of exchange. The resulting gain or loss is included in accumulated other comprehensive loss on the consolidated balance sheets.
Property and Equipment, Net	Property and Equipment, Net Property and equipment is recorded at cost and depreciated using the straight-line method over the estimated useful lives of the related assets. The useful lives are as follows: Computer equipment 2-3 years Delivery equipment 1.5 years Furniture and fixtures 5 years Developed software 1-3 years Purchased software 3-5 years Leasehold improvements Shorter of expected useful life or lease term The Company reduced the estimated useful life on certain developed and purchased software and computer equipment assets to coincide with the migration of nearly all of the Seamless consumer diner traffic to a new web and mobile platform during the second quarter of 2015 (see Note 7, “ Property and Equipment” Maintenance and repair costs are charged to expense as incurred. Major improvements, which extend the useful life of the related asset, are capitalized. Upon disposal of a fixed asset, the Company records a gain or loss based on the difference between the proceeds received and the net book value of the disposed asset.
Accounts Receivable, Net	Accounts Receivable, Net Accounts receivable primarily represent the net cash due from the Company’s payment processor for cleared transactions and amounts owed from corporate customers. The carrying amount of the Company’s receivables is reduced by an allowance for doubtful accounts that reflects management’s best estimate of amounts that will not be collected. These uncollected amounts are generally not recovered from the restaurants. The allowance is recorded through a charge to bad debt expense which is recorded within general and administrative expense in the consolidated statements of operations. The allowance is based on historical loss experience and any specific risks identified in collection matters. Management provides for probable uncollectible amounts through a charge against bad debt expense and a credit to an allowance based on its assessment of the current status of individual accounts. Balances still outstanding after management has used reasonable collection efforts are written off against the allowance. The Company does not charge interest on trade receivables. The Company incurs expenses for uncollected credit card receivables (or “chargebacks”), including fraudulent orders, when a diner’s card is authorized but fails to process, and for other unpaid credit card receivables, as well as uncollected accounts receivable from the Company’s corporate customers. The majority of the Company’s chargeback expense is recorded directly to general and administrative expense in the consolidated statements of operations as the charges are incurred; however, a portion of the allowance for doubtful accounts includes a reserve for chargebacks on the net cash due from the Company’s payment processors as of the end of the period. Changes in the Company’s allowance for doubtful accounts for the periods presented were as follows: Year Ended December 31, 2015 2014 Balance at beginning of period $ 723 $ 510 Additions to expense 850 426 Writeoffs, net of recoveries and other adjustments (614 ) (213 ) Balance at end of period $ 959 $ 723
Advertising Costs	Advertising Costs Advertising costs are generally expensed as incurred in connection with the requisite service period. Certain advertising production costs are capitalized and expensed when the advertisement first takes place. For the years ended December 31, 2015, 2014 and 2013, expenses attributable to advertising totaled approximately $64.4 million, $45.9 million and $25.0 million, respectively. Advertising costs are recorded in sales and marketing expense on the Company’s consolidated statements of operations.
Stock-Based Compensation	Stock-Based Compensation The Company measures compensation expense for all stock-based awards, including stock options, restricted stock units and restricted stock awards, at fair value on the date of grant and recognizes compensation expense over the service period on a straight-line basis for awards expected to vest. The Company uses the Black-Scholes option-pricing model to determine the fair value for stock options. In valuing the Company’s options, the Company makes assumptions about risk-free interest rates, dividend yields, volatility and weighted-average expected lives, including estimated forfeiture rates. Risk-free interest rates are derived from U.S. Treasury securities as of the option grant date. Expected dividend yield is based on the Company’s historical dividend payments, which have been zero to date. As the Company did not have public trading history for its common shares until April of 2014, the expected volatility for the Company’s common stock is estimated using a combination of the published historical and implied volatilities of industry peers representing the verticals in which the Company operates and the historical volatility of the Company’s own common stock. The Company estimates the weighted-average expected life of the options as the average of the vesting option schedule and the term of the award, since the Company does not have sufficient historical exercise data to provide a reasonable basis upon which to estimate expected term due to the limited period of time stock-based awards have been exercisable. The term of the award is estimated using the simplified method. Forfeiture rates are estimated using historical actual forfeiture trends as well as the Company’s judgment of future forfeitures. These rates are evaluated quarterly and any change in compensation expense is recognized in the period of the change. The estimation of stock awards that will ultimately vest requires judgment, and to the extent actual results or updated estimates differ from the Company’s current estimates, such amounts will be recorded as a cumulative adjustment in the period the estimates are revised. The Company considers many factors when estimating expected forfeitures, including the types of awards and employee class. Actual results, and future changes in estimates, may differ substantially from management’s current estimates. The Company has elected to use the with-and-without method in determining the order in which tax attributes are utilized. As a result, the Company will only recognize a tax benefit for stock-based awards in additional paid-in capital if an incremental tax benefit is realized after all other tax attributes available to the Company have been utilized. See Note 9, “Stock-Based Compensation” for further discussion.
Provision for Income Taxes	Provision for Income Taxes The provision for income taxes is determined using the asset and liability method. Under this method, deferred tax assets and liabilities are calculated based upon the temporary differences between the financial statement and income tax bases of assets and liabilities using the enacted tax rates that are applicable in a given year. The Company utilizes a two-step approach to recognizing and measuring uncertain tax positions (“tax contingencies”). The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes. The second step is to measure the tax benefit as the largest amount which is more than 50% likely to be realized upon ultimate settlement. The Company considers many factors when evaluating and estimating its tax positions and tax benefits, which may require periodic adjustments and which may not accurately forecast actual outcomes. The Company includes interest and penalties related to tax contingencies in the provision for income taxes in the consolidated statements of operations. See Note 10, “ Income Taxes Seamless North America, LLC became a partnership for tax purposes in June of 2011. The income tax consequences of a partnership are borne by its partners. The tax consequences of this partnership were borne by Aramark Holdings Corporation (“Aramark”) and SLW Investors, LLC from June of 2011 through October 29, 2012. Starting October 30, 2012, 74% of the partnership’s taxable income was reflected as taxable income at Seamless Holdings, a subsidiary of Grubhub Inc. Starting on August 9, 2013, 100% of the partnership’s taxable income was recognized as taxable income by the Company. If Seamless North America, LLC had been taxed as a C corporation for all of its earnings throughout 2013, the tax expense recorded in these consolidated statements of operations would have increased by $0.9 million.
Intangible Assets	Intangible Assets Intangible assets with finite useful lives are amortized using the straight-line method over their useful lives and are reviewed for impairment. The Company evaluates intangible assets and other long-lived assets for impairment whenever events or circumstances indicate that they may not be recoverable, or at least annually. Recoverability is measured by comparing the carrying amount of an asset group to the future undiscounted net cash flows expected to be generated by that asset group. If this comparison indicates impairment, the amount of impairment to be recognized is calculated as the difference between the carrying value and the fair value of the asset group, generally measured by discounting estimated future cash flows. There were no impairment indicators present during the years ended December 31, 2015, 2014 or 2013.
Website and Software Development Costs	Website and Software Development Costs The costs incurred in the preliminary stages of website and software development are expensed as incurred. Once an application has reached the development stage, internal and external costs, if direct and incremental and deemed by management to be significant, are capitalized and amortized on a straight-line basis over the estimated useful life of the application. Maintenance and enhancement costs, including those costs in the post-implementation stages, are typically expensed as incurred, unless such costs relate to substantial upgrades and enhancements to the website or software that result in added functionality, in which case the costs are capitalized and amortized on a straight-line basis over the estimated useful lives. Amortization expense related to capitalized website and software development costs is included in depreciation and amortization in the consolidated statements of operations. The Company capitalized $8.0 million, $3.6 million and $2.6 million of website development costs during the years ended December 31, 2015, 2014 and 2013, respectively.
Goodwill	Goodwill Goodwill represents the excess of the cost of an acquired business over the fair value of the assets acquired at the date of acquisition. Absent any special circumstances that could require an interim test, the Company has elected to test for goodwill impairment at September 30 of each year. The Company tests for impairment using a two-step process. The first step of the goodwill impairment test identifies if there is potential goodwill impairment. If step one indicates that an impairment may exist, a second step is performed to measure the amount of the goodwill impairment, if any, by comparing the implied fair value of goodwill with the carrying amount. If the implied fair value of goodwill is less than the carrying amount, a write-down is recorded. The Company determined there was no goodwill impairment during the years ended December 31, 2015, 2014 or 2013.
Fair Value	Fair Value Accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. The standards also establish a fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. See Note 14, “Fair Value Measurement,”
Concentration of Credit Risk	Concentration of Credit Risk Financial instruments which potentially subject the Company to concentrations of credit risk consist principally of accounts receivable. For the years ended December 31, 2015, 2014 and 2013, the Company had no customers which accounted for more than 1% of revenue or 10% of accounts receivable.
Revenue Recognition	Revenue Recognition In general, the Company recognizes revenue when (i) persuasive evidence of an arrangement exists, (ii) delivery has occurred or services have been rendered to the customer, (iii) the fee is fixed or determinable and (iv) collectability is reasonably assured. The Company considers a signed agreement, a binding contract with the restaurant or other similar documentation reflecting the terms and conditions under which products or services will be provided to be persuasive evidence of an arrangement. The Company generates revenues primarily when diners place an order on the platform through its mobile applications, its websites, third-party websites that incorporate API or one of the Company’s listed phone numbers. Restaurants pay a commission, typically a percentage of the transaction, on orders that are processed through the platform. Most of the restaurants on the platform can choose their level of commission rate, at or above a base rate, to affect their relative priority in the sorting algorithms, with restaurants paying higher commission rates generally appearing higher in the search order than restaurants paying lower commission rates. Additionally, restaurants that use the Company’s delivery services pay an additional commission for the use of those services. As an agent of the merchant in the transaction, the Company recognizes as revenues only the commissions from the transaction, which are a percentage of the total Gross Food Sales for such transaction. The Company periodically provides incentive offers to restaurants and diners to use the platform. These promotions are generally cash credits to be applied against purchases. These incentive offers are recorded as reductions in revenues, generally on the date the corresponding revenue is recorded. Revenues from online and phone delivery orders are recognized when these orders are placed at the restaurants. The amount of revenue recorded by the Company is based on the contractual arrangement with the related restaurant, and is adjusted for any cash credits, including incentive offers provided to restaurants and diners, related to the transaction. The Company also recognizes as revenue any fees charged to the diner for delivery services provided by the Company. Although the Company will process the entire amount of the transaction with the diner, it will record revenue on a net basis because the Company is acting as an agent of the merchant in the transaction. The Company will record an amount representing the restaurant food liability for the net balance due the restaurant. Costs incurred for processing the transactions and providing delivery services are included in operations and support in the consolidated statements of operations.
Deferred Rent	Deferred Rent For the Company’s operating leases, the Company recognizes rent expenses on a straight-line basis over the terms of the leases. Accordingly, the Company records the difference between cash rent payments and the recognition of rent expenses as a deferred rent liability in the consolidated balance sheets. The Company has landlord-funded leasehold improvements that are recorded as tenant allowances which are being amortized as a reduction of rent expense over the noncancelable terms of the operating leases.
Segments	Segments The Company has one reportable segment, which has been identified based on how the chief operating decision maker manages the business, makes operating decisions and evaluates operating performance.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In November 2015, Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2015-17, “Income Taxes – Balance Sheet Classification of Deferred Taxes” (“ASU 2015-17”). The purpose of the standard is to simplify the presentation of deferred taxes on a classified balance sheet. Under current GAAP, deferred income tax assets and liabilities are separated into current and noncurrent amounts in the balance sheet. The amendments in ASU 2015-17 require that all deferred tax assets and liabilities be classified as noncurrent in the balance sheet. The ASU is effective beginning in the first quarter of 2017, but with early adoption permitted and may be applied either prospectively or retrospectively. The Company has elected to early adopt ASU 2015-17 on a retrospective basis effective in the fourth quarter of 2015. The adoption of ASU 2015-17 impacted the presentation of the Company’s deferred tax assets and liabilities in the consolidated balance sheets and certain disclosures, but did not have an impact on results of operations or cash flows. See Note 10, “Income Taxes” for further details. In September 2015, the FASB issued Accounting Standards Update No. 2015-16, “Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments” (“ASU 2015-16”), which eliminates the requirement to account for adjustments identified during the measurement-period in a business combination retrospectively. Instead, the acquirer must recognize measurement-period adjustments during the period in which they are identified, including the effect on earnings of any amounts that would have been recorded in previous periods had the purchase accounting been completed at the acquisition date. ASU 2015-16 will be effective for the Company in the first quarter of 2016 with early adoption permitted. The adoption of ASU 2015-16 is expected to eliminate costs related to retrospective application of any measurement-period adjustments that may be identified, but otherwise is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows. In April 2015, the FASB issued Accounting Standards Update 2015-05, “Intangibles -Goodwill and Other – Internal Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement” (“ASU 2015-05”), which provides guidance on accounting for fees paid in a cloud computing arrangement. Under ASU 2015-05, if a cloud computing arrangement includes a software license, the software license element should be accounted for consistent with the purchase of other software licenses. If the cloud computing arrangement does not include a software license, it should be accounted for as a service contract. ASU 2015-05 will be effective for the Company in the first quarter of 2016 and may be applied either prospectively or retrospectively. The Company has elected to apply ASU 2015-05 prospectively; however, its adoption is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows. In May 2014, the FASB issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”) , which supersedes the revenue recognition requirements in Topic 605, Revenue Recognition, including most industry-specific requirements. ASU 2014-09 establishes a five-step revenue recognition process in which an entity will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. ASU 2014-09 also requires enhanced disclosures regarding the nature, amount, timing and uncertainty of revenues and cash flows from contracts with customers. In August 2015, the FASB issued Accounting Standards Update 2015-14, “Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date”, which defers the effective date of ASU 2014-09 by one year. ASU 2014-09 will be effective for the Company in the first quarter of 2018. Management is currently evaluating the impact the adoption of ASU 2014-09 will have on the .

Summary of Significant Accoun24

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Schedule of Property and Equipment Estimated Useful Life	Property and equipment is recorded at cost and depreciated using the straight-line method over the estimated useful lives of the related assets. The useful lives are as follows: Computer equipment 2-3 years Delivery equipment 1.5 years Furniture and fixtures 5 years Developed software 1-3 years Purchased software 3-5 years Leasehold improvements Shorter of expected useful life or lease term
Summary of Changes in Allowance For Doubtful Accounts	Changes in the Company’s allowance for doubtful accounts for the periods presented were as follows: Year Ended December 31, 2015 2014 Balance at beginning of period $ 723 $ 510 Additions to expense 850 426 Writeoffs, net of recoveries and other adjustments (614 ) (213 ) Balance at end of period $ 959 $ 723

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2015
Dining In, Restaurants on Run and Delivered Dish
Business Acquisition [Line Items]
Schedule of Acquisition Date Fair Value of Assets and Liabilities	The following table summarizes the final purchase price allocation acquisition-date fair values of the assets and liabilities acquired in connection with the DiningIn, Restaurants on the Run and Delivered Dish acquisitions: (in thousands) Cash and cash equivalents $ 698 Accounts receivable 2,331 Prepaid expenses and other assets 325 Customer and vendor relationships 44,259 Property and equipment 161 Developed technology 4,676 Goodwill 43,432 Trademarks 529 Accounts payable and accrued expenses (5,826 ) Total purchase price plus cash acquired 90,585 Cash acquired (698 ) Fair value of common stock issued (15,980 ) Net cash paid $ 73,907
Pro Forma Summary of Operation	The following unaudited pro forma information presents a summary of the operating results of the Company for the years ended December, 2015 and 2014 as if the acquisitions had occurred on January 1, 2014: Year Ended December 31, 2015 2014 (in thousands) Revenues $ 371,021 $ 283,522 Net income 39,431 23,103
Pro Forma Adjustments	The pro forma adjustments reflect the amortization that would have been recognized for intangible assets, elimination of transaction costs incurred and pro forma tax adjustments for the years ended December 31, 2015 and 2014 as follows: Year Ended December 31, 2015 2014 (in thousands) Depreciation and amortization $ 3 $ 5,483 Transaction costs (1,055 ) (646 ) Income tax benefit (109 ) (1,066 )
Grubhub Holdings Inc
Business Acquisition [Line Items]
Schedule of Acquisition Date Fair Value of Assets and Liabilities	The following table summarizes the August 8, 2013 acquisition-date fair value of the assets and liabilities acquired in connection with the Grubhub Holdings Inc. business combination: (in thousands) Cash and cash equivalents $ 13,266 Accounts receivable 2,108 Other identifiable assets 4,422 Customer and vendor relationships 167,450 Deferred tax asset 4,013 Deferred tax liability (88,937 ) Developed technology 5,143 Goodwill 239,346 Liabilities assumed (10,602 ) Trademarks 85,276 Total net assets acquired $ 421,485

Marketable Securities (Tables)

Marketable Securities (Tables)	12 Months Ended
	Dec. 31, 2015
Investments Debt And Equity Securities [Abstract]
Summary of Held-to-Maturity Marketable Securities	The amortized cost, unrealized gains and losses and estimated fair value of the Company’s held-to-maturity marketable securities as of December 31, 2015 and 2014 were as follows: December 31, 2015 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value (in thousands) Cash and cash equivalents Commercial paper $ 22,744 $ — $ (5 ) $ 22,739 Short term investments Commercial paper 90,949 — (102 ) 90,847 Corporate bonds 41,503 9 (39 ) 41,473 U.S. government agency bonds 8,996 8 — 9,004 Total $ 164,192 $ 17 $ (146 ) $ 164,063 December 31, 2014 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value (in thousands) Cash and cash equivalents Corporate bonds $ 1,882 $ 1 $ (1 ) $ 1,882 Short term investments Commercial paper 38,081 — (26 ) 38,055 Corporate bonds 73,260 2 (64 ) 73,198 Total $ 113,223 $ 3 $ (91 ) $ 113,135
Summary of Continuous Unrealized Loss on Marketable Securities	The gross unrealized losses, estimated fair value and length of time the individual marketable securities were in a continuous loss position for those marketable securities in an unrealized loss position as of December 31, 2015 and 2014 were as follows: December 31, 2015 Less Than 12 Months 12 Months or Greater Total Estimated Fair Value Unrealized Loss Estimated Fair Value Unrealized Estimated Fair Value Unrealized Loss (in thousands) Commercial paper $ 113,586 $ (107 ) $ — $ — $ 113,586 $ (107 ) Corporate bonds 31,952 (39 ) — — 31,952 (39 ) Total $ 145,538 $ (146 ) $ — $ — $ 145,538 $ (146 ) December 31, 2014 Less Than 12 Months 12 Months or Greater Total Estimated Fair Value Unrealized Loss Estimated Fair Value Unrealized Estimated Fair Value Unrealized Loss (in thousands) Commercial paper $ 38,055 $ (26 ) $ — $ — $ 38,055 $ (26 ) Corporate bonds 64,557 (65 ) — — 64,557 (65 ) Total $ 102,612 $ (91 ) $ — $ — $ 102,612 $ (91 )

Goodwill and Acquired Intangi27

Goodwill and Acquired Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Components of Acquired Intangible Assets (Finite Lived)	The components of acquired intangible assets as of December 31, 2015 and 2014 were as follows: December 31, 2015 December 31, 2014 Gross Carrying Amount Accumulated Amortization Net Value Gross Amount Accumulated Amortization Net Value (in thousands) Developed technology $ 9,819 $ (6,288 ) $ 3,531 $ 5,143 $ (2,392 ) $ 2,751 Customer and vendor relationships, databases 236,238 (44,192 ) 192,046 191,979 (30,067 ) 161,912 Trademarks 529 (215 ) 314 — — — Total amortizable intangible assets 246,586 (50,695 ) 195,891 197,122 (32,459 ) 164,663 Indefinite-lived trademarks 89,676 — 89,676 89,676 — 89,676 Total acquired intangible assets $ 336,262 $ (50,695 ) $ 285,567 $ 286,798 $ (32,459 ) $ 254,339
Components of Acquired Intangible Assets (Infinite Lived)	The components of acquired intangible assets as of December 31, 2015 and 2014 were as follows: December 31, 2015 December 31, 2014 Gross Carrying Amount Accumulated Amortization Net Value Gross Amount Accumulated Amortization Net Value (in thousands) Developed technology $ 9,819 $ (6,288 ) $ 3,531 $ 5,143 $ (2,392 ) $ 2,751 Customer and vendor relationships, databases 236,238 (44,192 ) 192,046 191,979 (30,067 ) 161,912 Trademarks 529 (215 ) 314 — — — Total amortizable intangible assets 246,586 (50,695 ) 195,891 197,122 (32,459 ) 164,663 Indefinite-lived trademarks 89,676 — 89,676 89,676 — 89,676 Total acquired intangible assets $ 336,262 $ (50,695 ) $ 285,567 $ 286,798 $ (32,459 ) $ 254,339 The components of the acquired intangibles assets added during the year ended December 31, 2015 were as follows: Year Ended December 31, 2015 Weighted-Average Amortization Period (in thousands) (years) Customer and vendor relationships $ 44,259 18.7 Developed technology 4,676 1.7 Trademarks 529 1.8 Total $ 49,464
Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill for the years ended December 31, 2015 and 2014 were as follows. Goodwill Accumulated Impairment Losses Net Book Value (in thousands) Balance as of December 31, 2013 $ 352,788 $ — $ 352,788 Balance as of December 31, 2014 352,788 — 352,788 Acquisitions 43,432 — 43,432 Balance as of December 31, 2015 $ 396,220 $ — $ 396,220
Components of Acquired Intangibles Assets Added During the Year (Finite Lived)	The components of the acquired intangibles assets added during the year ended December 31, 2015 were as follows: Year Ended December 31, 2015 Weighted-Average Amortization Period (in thousands) (years) Customer and vendor relationships $ 44,259 18.7 Developed technology 4,676 1.7 Trademarks 529 1.8 Total $ 49,464
Estimated Future Amortization of Acquired Intangible Assets	Estimated future amortization expense of acquired intangible assets as of December 31, 2015 was as follows: (in thousands) 2016 $ 17,664 2017 15,331 2018 14,455 2019 14,455 2020 11,249 Thereafter 122,737 Total $ 195,891

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2015
Property Plant And Equipment [Abstract]
Components of Property and Equipment	The components of the Company’s property and equipment as of December 31, 2015 and 2014 were as follows: December 31, 2015 December 31, 2014 (in thousands) Computer equipment $ 10,080 $ 12,114 Delivery equipment 555 — Furniture and fixtures 2,092 1,876 Developed software 11,129 12,378 Purchased software 361 2,149 Leasehold improvements 6,050 5,900 Property and equipment 30,267 34,417 Accumulated amortization and depreciation (11,185 ) (18,414 ) Property and equipment, net $ 19,082 $ 16,003

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Summary of Future Minimum Lease Payments	Future minimum lease payments under the Company’s operating lease agreements that have initial or remaining non-cancelable lease terms in excess of one year as of December 31, 2015 were as follows: (in thousands) 2016 $ 3,618 2017 3,938 2018 4,499 2019 4,698 2020 4,762 Thereafter 19,567 Total $ 41,082
Summary of Restructuring Activity	The following table summarizes the Company’s restructuring activity during the years ended December 31, 2015 and 2014: (in thousands) Restructuring accrual balance at December 31, 2013 $ 176 Restructuring expense 1,313 Cash payments (741 ) Restructuring accrual balance at December 31, 2014 748 Restructuring expense — Cash payments (748 ) Restructuring accrual balance at December 31, 2015 $ —

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Assumptions Used to Determine Fair Value of Stock Options Granted	The assumptions used to determine the fair value of the stock options granted during the years ended December 31, 2015, 2014 and 2013 were as follows: 2015 2014 2013 Weighted-average fair value options granted $ 14.66 $ 13.87 $ 3.97 Average risk-free interest rate 1.65 % 1.97 % 1.41 % Expected stock price volatilities (a) 48.4 % 50.3 % 50.7 % Dividend yield None None None Expected stock option life (years) 6.07 6.26 5.20 (a) There was no active external or internal market for the Company’s common stock prior to the IPO. Due to the Company’s limited trading history, the Company estimated expected volatility for the years ended December 31, 2015 and 2014 based on a combination of the historical and implied volatilities of comparable publicly-traded companies and the historical volatility of the Company’s own common stock. During the year ended December 31, 2013, the expected volatility was based on the historical and implied volatilities of comparable publicly-traded companies as there was no trading history for the Company’s own common stock.
Summary of Stock Option Activity	Stock option awards as of December 31, 2015 and 2014, and changes during the year ended December 31, 2015, were as follows: Options Weighted-Average Exercise Price Aggregate Intrinsic Value (thousands) Weighted-Average Exercise (years) Outstanding at December 31, 2014 6,180,795 $ 8.49 $ 172,661 7.87 Granted 2,542,523 30.99 Forfeited (1,066,623 ) 18.31 Exercised (2,578,398 ) 4.63 Outstanding at December 31, 2015 5,078,297 19.66 41,107 8.21 Vested and expected to vest at December 31, 2015 3,522,623 17.77 32,195 8.08 Exercisable at December 31, 2015 1,349,375 $ 8.23 $ 23,208 6.62
Non-vested Restricted Stock Units and Restricted Stock Awards	Non-vested restricted stock unit awards as of December 31, 2015 and 2014, and changes during the year ended December 31, 2015 were as follows: Restricted Stock Units Restricted Stock Awards Shares Weighted-Average Grant Date Fair Value Shares Weighted-Average Grant Value Outstanding at December 31, 2014 2,899 $ 31.90 — $ — Granted 896,906 27.85 101,616 42.01 Forfeited (11,322 ) 28.98 — — Vested — — (33,872 ) 42.01 Outstanding at December 31, 2015 888,483 $ 27.85 67,744 $ 42.01

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Tax Provision	For the years ended December 31, 2015, 2014 and 2013, the income tax provision was comprised of the following: Year Ended December 31, 2015 2014 2013 (in thousands) Current: Federal $ 20,947 $ 8,073 $ 2,912 State 6,260 7,610 3,056 Foreign 480 426 468 Total current 27,687 16,109 6,436 Deferred: Federal (1,534 ) 1,056 1,300 State (2,301 ) 3,556 406 Total deferred (3,835 ) 4,612 1,706 Total income tax expense $ 23,852 $ 20,721 $ 8,142
Income Before Provision for Income Taxes	Income before provision for income taxes for the years ended December 31, 2015, 2014 and 2013, was as follows: Year Ended December 31, 2015 2014 2013 (in thousands) Domestic source $ 59,705 $ 43,069 $ 12,986 Foreign source 2,224 1,915 1,903 Income before provision for income taxes $ 61,929 $ 44,984 $ 14,889
Reconciliation of Income Taxes Computed at U.S. Federal Statutory Rate to Income Taxes	The following is a reconciliation of income taxes computed at the U.S. federal statutory rate to the income taxes reported in the consolidated statements of operations for the years ended December 31, 2015, 2014 and 2013: Year Ended December 31, 2015 2014 2013 (in thousands) Income tax expense at statutory rate $ 21,675 $ 15,747 $ 5,211 State income taxes 2,577 8,038 2,522 Deferred tax impact of reorganization — (2,382 ) — Nondeductible transaction costs — — 1,148 Tax benefit of partnership status — — (726 ) Valuation allowance reversal — — (502 ) Research and development tax credit (345 ) — — Foreign rate differential (328 ) (253 ) (220 ) Deferred tax true-up 69 — — All other 204 (429 ) 709 Total income tax expense $ 23,852 $ 20,721 $ 8,142
Deferred Income Tax Assets and Liabilities	The tax effects of temporary differences giving rise to deferred income tax assets and liabilities as of December 31, 2015 and 2014 were as follows: As of December 31, 2015 2014 (in thousands) Deferred tax assets: Loss and credit carryforwards $ 5,134 $ 7,212 Accrued expenses 1,934 2,221 Stock-based compensation 8,330 7,752 Total deferred tax assets 15,398 17,185 Valuation allowance (910 ) (910 ) Net deferred tax assets 14,488 16,275 Deferred tax liabilities: Fixed assets (2,269 ) (2,721 ) Intangible assets (99,803 ) (104,973 ) Total deferred tax liabilities (102,072 ) (107,694 ) Net deferred tax liability $ (87,584 ) $ (91,419 ) Classification of net deferred tax assets (liabilities) on the consolidated balance sheets as of December 31, 2015 and 2014 was as follows: As of December 31, 2015 2014 (in thousands) Non-current liabilities $ (87,584 ) $ (91,419 ) Total deferred tax liability $ (87,584 ) $ (91,419 )
Credit Carryforwards	The Company had the following tax loss and credit carryforwards as of December 31, 2015 and 2014: 2015 2014 Beginning Year of Expiration (in thousands) U.S. federal loss carryforwards $ 3,284 $ 7,706 2027 U.S. state and local loss carryforwards 5,753 9,856 2027 U.S. contribution carryforwards — 166 2015 Illinois Edge Credits (a) 3,829 2,938 2017 New York unincorporated business tax credits (a) — 875 2021 (a) Amounts are before the federal benefit of state tax
Unrecognized Tax Benefit Activity Excluding Related Accrual for Interest	The following table summarizes the Company’s unrecognized tax benefit activity during the years ended December 31, 2015 and 2014, excluding the related accrual for interest: As of December 31, 2015 2014 (in thousands) Balance at beginning of period $ 3,188 $ 1,097 Reductions for tax positions of prior years (296 ) (491 ) Additions for tax positions of prior years 40 50 Additions for tax positions of the current year — 2,532 Balance at end of period $ 2,932 $ 3,188

Earnings Per Share Attributab32

Earnings Per Share Attributable to Common Stockholders (Tables)	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Income Per Share	The following table presents the calculation of basic and diluted net income per share attributable to common stockholders for the years ended December 31, 2015, 2014 and 2013: Year Ended December 31, 2015 Income (Numerator) Shares (Denominator) Per Share Amount (in thousands, except per share data) Basic EPS Net income attributable to common stockholders $ 38,077 84,076 $ 0.45 Effect of Dilutive Securities Preferred stock — — Stock options — 1,594 Restricted stock units and restricted stock awards — 36 Diluted EPS Net income attributable to common stockholders $ 38,077 85,706 $ 0.44 Year Ended December 31, 2014 Income (Numerator) Shares (Denominator) Per Share Amount (in thousands, except per share data) Net income $ 24,263 Preferred stock tax distributions (320 ) Basic EPS Net income attributable to common stockholders 23,943 73,571 $ 0.33 Effect of Dilutive Securities Preferred stock 320 4,980 Stock options — 3,147 Restricted stock units and restricted stock awards — — Diluted EPS Net income attributable to common stockholders $ 24,263 81,698 $ 0.30 Year Ended December 31, 2013 Income (Numerator) Shares (Denominator) Per Share Amount (in thousands, except per share data) Net income $ 6,747 Preferred stock tax distributions (1,073 ) Basic EPS Net income attributable to common stockholders 5,674 40,681 $ 0.14 Effect of Dilutive Securities Preferred stock 1,073 14,390 Stock options — 1,574 Diluted EPS Net income attributable to common stockholders $ 6,747 56,645 $ 0.12
Anti-dilutive Securities Excluded from Calculation of Diluted Net Income Per Share	The number of shares of common stock underlying stock-based awards excluded from the calculation of diluted net income per share attributable to common stockholders because their effect would have been antidilutive for the years ended December 31, 2015, 2014 and 2013 were as follows: Year Ended December 31, 2015 2014 2013 Anti-dilutive shares underlying stock-based awards: Stock options 2,380,813 407,328 477,452 Restricted stock awards — — — Restricted stock units 464,930 657 —

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Schedule of Fair Value Assets Measured on Recurring Basis	The following table presents the balances of assets measured at fair value on a recurring basis as of December 31, 2015 and 2014: December 31, 2015 December 31, 2014 Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 (in thousands) Money market funds $ — $ 1,083 $ — $ — $ 1,386 $ — Commercial paper — 113,586 — — 38,055 — Corporate bonds — 41,473 — — 75,080 — U.S. government agency bonds — 9,004 — — — — Total $ — $ 165,146 $ — $ — $ 114,521 $ —

Subsequent Events (Tables)

Subsequent Events (Tables)	12 Months Ended
	Dec. 31, 2015
Subsequent Events [Abstract]
Schedule of Common Stock Repurchased and Retired	From January 1, 2016 through February 19, 2016, the Company repurchased and retired $9.8 million of its common stock as follows: Period Total Number of Shares Purchased Average Price Paid per Share Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs Dollar Value of Shares that May Yet be Purchased Under the Plans or (in thousands) January 1, 2016 - January 31, 2016 148,073 $ 18.67 148,073 $ 97,235 February 1, 2016 - February 19, 2016 358,600 19.51 358,600 90,239 Total 506,673 $ 19.26 506,673

Estimated Useful life of Proper

Estimated Useful life of Property and Equipment (Detail)	12 Months Ended
	Dec. 31, 2015
Computer equipment | Minimum
Property Plant And Equipment [Line Items]
Property and equipment useful life	2 years
Computer equipment | Maximum
Property Plant And Equipment [Line Items]
Property and equipment useful life	3 years
Delivery equipment
Property Plant And Equipment [Line Items]
Property and equipment useful life	1 year 6 months
Furniture and fixtures
Property Plant And Equipment [Line Items]
Property and equipment useful life	5 years
Developed software | Minimum
Property Plant And Equipment [Line Items]
Property and equipment useful life	1 year
Developed software | Maximum
Property Plant And Equipment [Line Items]
Property and equipment useful life	3 years
Purchased software | Minimum
Property Plant And Equipment [Line Items]
Property and equipment useful life	3 years
Purchased software | Maximum
Property Plant And Equipment [Line Items]
Property and equipment useful life	5 years
Leasehold improvements
Property Plant And Equipment [Line Items]
Property and equipment useful life	Shorter of expected useful life or lease term

Summary of Changes in Allowance

Summary of Changes in Allowance For Doubtful Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Balance at beginning of period	$ 723	$ 510
Additions to expense	850	426	$ 473
Writeoffs, net of recoveries and other adjustments	(614)	(213)
Balance at end of period	$ 959	$ 723	$ 510

Summary of Significant Accoun37

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	5 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2013USD ($)	Aug. 08, 2013	Dec. 31, 2015USD ($)CustomerSegment	Dec. 31, 2014USD ($)Customer	Dec. 31, 2013USD ($)Customer
Significant Accounting Policies [Line Items]
Advertising costs			$ 64,400	$ 45,900	$ 25,000
Expected dividend yield			0.00%
Taxable income percentage reselected in taxable income	100.00%	74.00%
Unrecognized tax expense that would have impact tax rate					900
Goodwill Impairment			$ 0	$ 0	$ 0
Number of reportable segment | Segment			1
Customer Concentration Risk | Revenue
Significant Accounting Policies [Line Items]
Number of customers accounted | Customer			0	0	0
Concentration risk percentage			1.00%	1.00%	1.00%
Customer Concentration Risk | Accounts receivable
Significant Accounting Policies [Line Items]
Number of customers accounted | Customer			0	0	0
Concentration risk percentage			10.00%	10.00%	10.00%
Developed software
Significant Accounting Policies [Line Items]
Capitalized cost	$ 2,600		$ 8,000	$ 3,600	$ 2,600

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) $ in Thousands	Dec. 04, 2015USD ($)shares	Feb. 27, 2015	Feb. 04, 2015	Aug. 08, 2013USD ($)shares	Dec. 31, 2015USD ($)	Dec. 31, 2015USD ($)shares	Dec. 31, 2014USD ($)Acquisition	Dec. 31, 2013USD ($)shares
Business Acquisition [Line Items]
Business acquisition, payment costs						$ 73,907
Cash acquired in business acquisition								$ 13,266
Goodwill related to acquisition					$ 396,220	396,220	$ 352,788	352,788
Revenues						361,825	253,873	137,143
Net income (loss)						38,077	$ 24,263	6,747
Number of acquisitions | Acquisition							0
Fair value of shares issued						15,980		421,485
Unrecognized Compensation expense recognized in the post-Merger consolidated financial statements					25,700	25,700
General and administrative expenses
Business Acquisition [Line Items]
Direct and indirect expense incurred related to acquisitions						$ 1,100
DiningIn
Business Acquisition [Line Items]
Acquisition date			Feb. 4, 2015
Restaurants on the Run, Inc
Business Acquisition [Line Items]
Acquisition date		Feb. 27, 2015
Delivered Dish
Business Acquisition [Line Items]
Acquisition date	Dec. 4, 2015
Dining In, Restaurants on Run and Delivered Dish
Business Acquisition [Line Items]
Business acquisition, payment costs	$ 73,907
Business acquisition, transaction value	89,887
Cash acquired in business acquisition	698
Goodwill related to acquisition	43,432
Revenues					23,000
Net income (loss)					$ (1,500)
Fair value of shares issued	$ 15,980
Grubhub Holdings Inc
Business Acquisition [Line Items]
Acquisition date				Aug. 8, 2013
Goodwill related to acquisition				$ 239,346
Fair value of shares issued				421,485
Grubhub Holdings Inc | Non-vested stock options
Business Acquisition [Line Items]
Fair value of shares issued				11,000
Unrecognized Compensation expense recognized in the post-Merger consolidated financial statements				$ 12,500
Grubhub Holdings Inc | General and administrative expenses
Business Acquisition [Line Items]
Direct and indirect expense incurred related to acquisitions								$ 4,700
Common stock
Business Acquisition [Line Items]
Business acquisitions, share issued | shares						407,812		23,318,580
Common stock | Dining In, Restaurants on Run and Delivered Dish
Business Acquisition [Line Items]
Business acquisitions, share issued | shares	407,812
Common stock | Grubhub Holdings Inc
Business Acquisition [Line Items]
Business acquisitions, share issued | shares				23,318,580
Preferred Stock
Business Acquisition [Line Items]
Business acquisitions, share issued | shares								8,098,430
Preferred Stock | Grubhub Holdings Inc
Business Acquisition [Line Items]
Business acquisitions, share issued | shares				8,098,430

Schedule of Acquisition-Date Fa

Schedule of Acquisition-Date Fair Value of Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 04, 2015	Aug. 08, 2013	Dec. 31, 2015	Dec. 31, 2013	Dec. 31, 2014
Business Acquisition [Line Items]
Intangible assets			$ 49,464
Goodwill			396,220	$ 352,788	$ 352,788
Cash acquired				(13,266)
Fair value of common stock issued			(15,980)	$ (421,485)
Net cash paid			73,907
Dining In, Restaurants on Run and Delivered Dish
Business Acquisition [Line Items]
Cash and cash equivalents	$ 698
Accounts receivable	2,331
Prepaid expenses and other assets	325
Property and equipment	161
Goodwill	43,432
Accounts payable and accrued expenses	(5,826)
Total purchase price plus cash acquired	90,585
Cash acquired	(698)
Fair value of common stock issued	(15,980)
Net cash paid	73,907
Grubhub Holdings Inc
Business Acquisition [Line Items]
Cash and cash equivalents		$ 13,266
Accounts receivable		2,108
Goodwill		239,346
Total purchase price plus cash acquired		421,485
Fair value of common stock issued		(421,485)
Other identifiable assets		4,422
Deferred tax asset		4,013
Deferred tax liability		(88,937)
Liabilities assumed		(10,602)
Customer Relationships
Business Acquisition [Line Items]
Intangible assets			44,259
Customer Relationships | Dining In, Restaurants on Run and Delivered Dish
Business Acquisition [Line Items]
Intangible assets	44,259
Customer Relationships | Grubhub Holdings Inc
Business Acquisition [Line Items]
Intangible assets		167,450
Developed technology
Business Acquisition [Line Items]
Intangible assets			$ 4,676
Developed technology | Dining In, Restaurants on Run and Delivered Dish
Business Acquisition [Line Items]
Intangible assets	4,676
Developed technology | Grubhub Holdings Inc
Business Acquisition [Line Items]
Intangible assets		5,143
Trademarks | Dining In, Restaurants on Run and Delivered Dish
Business Acquisition [Line Items]
Intangible assets	$ 529
Trademarks | Grubhub Holdings Inc
Business Acquisition [Line Items]
Trademarks		$ 85,276

Pro forma Summary of Operation

Pro forma Summary of Operation (Detail) - Dining In, Restaurants on Run and Delivered Dish - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Revenues	$ 371,021	$ 283,522
Net income	$ 39,431	$ 23,103

Pro Forma Adjustments for Addit

Pro Forma Adjustments for Additional Amortization of That Would Have Been Recognized on the Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Depreciation and amortization	$ 28,034	$ 22,687	$ 13,470
Income tax benefit	23,852	20,721	$ 8,142
Dining In, Restaurants on Run and Delivered Dish | Pro Forma
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Depreciation and amortization	3	5,483
Transaction costs	(1,055)	(646)
Income tax benefit	$ (109)	$ (1,066)

Summary of Held-to-Maturity Mar

Summary of Held-to-Maturity Marketable Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule Of Held To Maturity Securities [Line Items]
Amortized Cost	$ 164,192	$ 113,223
Unrealized Gains	17	3
Unrealized Losses	(146)	(91)
Estimated Fair Value	164,063	113,135
Commercial Paper | Cash and Cash Equivalents
Schedule Of Held To Maturity Securities [Line Items]
Amortized Cost	22,744
Unrealized Losses	(5)
Estimated Fair Value	22,739
Commercial Paper | Short Term Investments
Schedule Of Held To Maturity Securities [Line Items]
Amortized Cost	90,949	38,081
Unrealized Losses	(102)	(26)
Estimated Fair Value	90,847	38,055
Corporate Bonds | Cash and Cash Equivalents
Schedule Of Held To Maturity Securities [Line Items]
Amortized Cost		1,882
Unrealized Gains		1
Unrealized Losses		(1)
Estimated Fair Value		1,882
Corporate Bonds | Short Term Investments
Schedule Of Held To Maturity Securities [Line Items]
Amortized Cost	41,503	73,260
Unrealized Gains	9	2
Unrealized Losses	(39)	(64)
Estimated Fair Value	41,473	$ 73,198
U.S. Government Agency Bonds | Short Term Investments
Schedule Of Held To Maturity Securities [Line Items]
Amortized Cost	8,996
Unrealized Gains	8
Estimated Fair Value	$ 9,004

Summary of Continuous Unrealize

Summary of Continuous Unrealized Loss on Marketable Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule Of Held To Maturity Securities [Line Items]
Estimated Fair Value, Less Than 12 Months	$ 145,538	$ 102,612
Unrealized Loss, Less Than 12 Months	(146)	(91)
Estimated Fair Value, 12 Months or Greater	0	0
Unrealized Loss, 12 Months or Greater	0	0
Estimated Fair Value, Total	145,538	102,612
Unrealized Loss, Total	(146)	(91)
Commercial Paper
Schedule Of Held To Maturity Securities [Line Items]
Estimated Fair Value, Less Than 12 Months	113,586	38,055
Unrealized Loss, Less Than 12 Months	(107)	(26)
Estimated Fair Value, 12 Months or Greater	0	0
Unrealized Loss, 12 Months or Greater	0	0
Estimated Fair Value, Total	113,586	38,055
Unrealized Loss, Total	(107)	(26)
Corporate Bonds
Schedule Of Held To Maturity Securities [Line Items]
Estimated Fair Value, Less Than 12 Months	31,952	64,557
Unrealized Loss, Less Than 12 Months	(39)	(65)
Estimated Fair Value, 12 Months or Greater	0	0
Unrealized Loss, 12 Months or Greater	0	0
Estimated Fair Value, Total	31,952	64,557
Unrealized Loss, Total	$ (39)	$ (65)

Marketable Securities - Additio

Marketable Securities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Investments Debt And Equity Securities [Abstract]
Other-than-temporary impairment losses related to marketable securities	$ 0	$ 0

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - Aramark	12 Months Ended
	Dec. 31, 2013USD ($)
Related Party Transaction [Line Items]
Due to related parties	$ 0
Corporate service agreement expense	$ 100,000

Components of Acquired Intangib

Components of Acquired Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Gross Carrying Amount	$ 246,586	$ 197,122
Amortizable intangible assets, Accumulated Amortization	(50,695)	(32,459)
Amortizable intangible assets, Net Carrying Value	195,891	164,663
Indefinite-lived trademarks	89,676	89,676
Total acquired intangible assets, Gross Carrying Amount	336,262	286,798
Total acquired intangible assets, Net Carrying Value	285,567	254,339
Developed technology
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Gross Carrying Amount	9,819	5,143
Amortizable intangible assets, Accumulated Amortization	(6,288)	(2,392)
Amortizable intangible assets, Net Carrying Value	3,531	2,751
Customer and vendor relationships, databases
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Gross Carrying Amount	236,238	191,979
Amortizable intangible assets, Accumulated Amortization	(44,192)	(30,067)
Amortizable intangible assets, Net Carrying Value	192,046	$ 161,912
Trademarks
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Gross Carrying Amount	529
Amortizable intangible assets, Accumulated Amortization	(215)
Amortizable intangible assets, Net Carrying Value	$ 314

Goodwill and Acquired Intangi47

Goodwill and Acquired Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite Lived Intangible Assets [Line Items]
Intangible assets amortization expense	$ 22,949	$ 17,655	$ 9,477
Acquired other intangible assets	49,464
Other Intangible Assets
Finite Lived Intangible Assets [Line Items]
Intangible assets amortization expense	$ 18,200	$ 14,100	$ 6,900
Weighted Average Amortization Period (years)	14 years 3 months 18 days

Schedule of Carrying Amount of

Schedule of Carrying Amount of Goodwill (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill, beginning	$ 352,788
Goodwill, ending	396,220
Goodwill, Acquisition	43,432
Net book value, beginning	352,788
Net book value, ending	396,220
Net book value, Acquisition	$ 43,432

Components of Acquired Intang49

Components of Acquired Intangibles Assets Added During the Year (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)
Finite Lived Intangible Assets [Line Items]
Acquired other intangible assets	$ 49,464
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Acquired other intangible assets	$ 44,259
Weighted Average Amortization Period (years)	18 years 8 months 12 days
Developed technology
Finite Lived Intangible Assets [Line Items]
Acquired other intangible assets	$ 4,676
Weighted Average Amortization Period (years)	1 year 8 months 12 days
Trademarks
Finite Lived Intangible Assets [Line Items]
Acquired other intangible assets	$ 529
Weighted Average Amortization Period (years)	1 year 9 months 18 days

Estimated Future Amortization o

Estimated Future Amortization of Acquired Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]
2,016	$ 17,664
2,017	15,331
2,018	14,455
2,019	14,455
2,020	11,249
Thereafter	122,737
Amortizable intangible assets, Net Carrying Value	$ 195,891	$ 164,663

Components of Property and Equi

Components of Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Property Plant And Equipment [Line Items]
Property and equipment	$ 30,267	$ 34,417
Accumulated amortization and depreciation	(11,185)	(18,414)
Property and equipment, net	19,082	16,003
Computer equipment
Property Plant And Equipment [Line Items]
Property and equipment	10,080	12,114
Delivery equipment
Property Plant And Equipment [Line Items]
Property and equipment	555
Furniture and fixtures
Property Plant And Equipment [Line Items]
Property and equipment	2,092	1,876
Developed software
Property Plant And Equipment [Line Items]
Property and equipment	11,129	12,378
Purchased software
Property Plant And Equipment [Line Items]
Property and equipment	361	2,149
Leasehold improvements
Property Plant And Equipment [Line Items]
Property and equipment	$ 6,050	$ 5,900

Property and Equipment - Additi

Property and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property Plant And Equipment [Line Items]
Accelerated depreciation and amortization expense	$ 1,900
Depreciation and amortization	28,034	$ 22,687	$ 13,470
Capitalized developed software costs	8,000	3,600	2,600
Property And Equipment Excluding Developed Software
Property Plant And Equipment [Line Items]
Depreciation and amortization	5,700	5,700	4,000
Developed software
Property Plant And Equipment [Line Items]
Depreciation and amortization	$ 4,100	$ 2,900	$ 2,600

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loss Contingencies [Line Items]
Lease renewal period	5 years
Operating lease, rental expense	$ 4,100	$ 3,600	$ 2,500
Restructuring expense	0	1,313	$ 200
Contract Termination
Loss Contingencies [Line Items]
Restructuring expense		$ 500
Merger Income Tax Consequences
Loss Contingencies [Line Items]
Indemnification related to business combination	$ 15,000

Future Minimum Lease Payments (

Future Minimum Lease Payments (Detail) $ in Thousands	Dec. 31, 2015USD ($)
Leases [Abstract]
2,016	$ 3,618
2,017	3,938
2,018	4,499
2,019	4,698
2,020	4,762
Thereafter	19,567
Total	$ 41,082

Summary of Restructuring Activi

Summary of Restructuring Activity (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring And Related Activities [Abstract]
Restructuring accrual balance at Beginning of period	$ 748	$ 176
Restructuring expense	0	1,313	$ 200
Cash payments	$ (748)	(741)
Restructuring accrual balance at end of period		$ 748	$ 176

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($)	May. 20, 2015	Aug. 08, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options, Granted			2,542,523	2,019,413	3,698,708
Stock options expire period from the date of grant			10 years
Fair value of shares issued			$ 15,980,000		$ 421,485,000
Unrecognized stock-based compensation expense			25,700,000
Aggregate intrinsic value of awards exercised			87,600,000	$ 74,000,000	3,400,000
Stock-based compensation			13,450,000	9,393,000	4,933,000
Excess tax benefits related to stock-based compensation			27,830,000	12,975,000
Website and software development cost
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock base compensation capitalized as website and software development cost			$ 500,000	100,000
Grubhub Holdings Inc
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of shares issued		$ 421,485,000
Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Term for stock options issued to employees			2 years
Stock-based compensation			$ 1,900,000	$ 0	$ 0
Unrecognized compensation expense recognition period			1 year 2 months 12 days
Non-vested restricted stock units			67,744	0	0
Fair value of awards vested during the period			$ 1,400,000
Unrecognized compensation expense related to share based awards other than options			$ 1,700,000
Weighted average grant date fair value			$ 42.01
Excess tax benefits			$ 0	$ 0	$ 0
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation			$ 9,900,000	9,400,000	4,900,000
Unrecognized compensation expense recognition period			3 years 2 months 12 days
Excess tax benefit related to stock-based compensation, decrease in operating activities			$ 27,830,000	12,975,000
Excess tax benefits related to stock-based compensation			27,830,000	$ 12,975,000
Stock Options | Grubhub Holdings Inc
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of shares issued		11,000,000
Unrecognized stock-based compensation expense		$ 12,500,000
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation			$ 1,700,000		$ 0
Unrecognized compensation expense recognition period			3 years 8 months 12 days
Non-vested restricted stock units			888,483	2,899	0
Unrecognized compensation expense related to share based awards other than options			$ 13,800,000
Weighted average grant date fair value			$ 27.85	$ 31.90
Excess tax benefits			$ 0	$ 0	$ 0
2015 Long-Term Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock shares reserved for issuance	14,256,901
Shares of common stock authorized			8,637,093
Common stock shares available for issuance			8,637,093
Term for stock options issued to employees			4 years
2015 Long-Term Incentive Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Term for stock options issued to employees			10 years
2013 Omnibus Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options, Granted	0
Term for stock options issued to employees			4 years
2013 Omnibus Incentive Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Term for stock options issued to employees			10 years

Assumptions Used to Determine F

Assumptions Used to Determine Fair Value of Stock Options Granted (Detail) - $ / shares		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Weighted-average fair value options granted		$ 14.66	$ 13.87	$ 3.97
Average risk-free interest rate		1.65%	1.97%	1.41%
Expected stock price volatilities	[1]	48.40%	50.30%	50.70%
Dividend yield		0.00%	0.00%	0.00%
Expected stock option life (years)		6 years 26 days	6 years 3 months 4 days	5 years 2 months 12 days
[1]	There was no active external or internal market for the Company’s common stock prior to the IPO. Due to the Company’s limited trading history, the Company estimated expected volatility for the years ended December 31, 2015 and 2014 based on a combination of the historical and implied volatilities of comparable publicly-traded companies and the historical volatility of the Company’s own common stock. During the year ended December 31, 2013, the expected volatility was based on the historical and implied volatilities of comparable publicly-traded companies as there was no trading history for the Company’s own common stock.

Stock Option Activity (Detail)

Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Options
Options, Beginning Balance	6,180,795
Options, Granted	2,542,523	2,019,413	3,698,708
Options, Forfeited	(1,066,623)
Options, Exercised	(2,578,398)
Options, Ending Balance	5,078,297	6,180,795
Options, Vested and expected to vest	3,522,623
Options, Exercisable	1,349,375
Weighted Average Exercise Price
Weighted Average Exercise Price, Beginning Balance	$ 8.49
Weighted Average Exercise Price, Granted	30.99
Weighted Average Exercise Price, Forfeited	18.31
Weighted Average Exercise Price, Exercised	4.63
Weighted Average Exercise Price, Ending Balance	19.66	$ 8.49
Weighted Average Exercise Price, Vested and expected to vest	17.77
Weighted Average Exercise Price, Exercisable	$ 8.23
Aggregate Intrinsic Value/Weighted Average Exercise Term
Aggregate Intrinsic Value	$ 41,107	$ 172,661
Aggregate Intrinsic Value, Vested and expected to vest	32,195
Aggregate Intrinsic Value, Exercisable	$ 23,208
Weighted Average Exercise Term, Outstanding Balance	8 years 2 months 16 days	7 years 10 months 13 days
Weighted Average Exercise Term, Vested and expected to vest	8 years 29 days
Weighted Average Exercise Term, Exercisable	6 years 7 months 13 days

Non-vested Restricted Stock Uni

Non-vested Restricted Stock Units and Restricted Stock Awards (Detail)	12 Months Ended
	Dec. 31, 2015$ / sharesshares
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares, Beginning Balance	2,899
Shares, Granted	896,906
Shares, Forfeited	(11,322)
Shares, Ending Balance	888,483
Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares	$ 31.90
Weighted Average Grant Date Fair Value, Granted | $ / shares	27.85
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	28.98
Weighted Average Grant Date Fair Value, Ending Balance | $ / shares	$ 27.85
Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares, Beginning Balance	0
Shares, Granted	101,616
Shares, Vested	(33,872)
Shares, Ending Balance	67,744
Weighted Average Grant Date Fair Value, Granted | $ / shares	$ 42.01
Weighted Average Grant Date Fair Value, Vested | $ / shares	42.01
Weighted Average Grant Date Fair Value, Ending Balance | $ / shares	$ 42.01

Income Tax Provision (Detail)

Income Tax Provision (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 20,947	$ 8,073	$ 2,912
State	6,260	7,610	3,056
Foreign	480	426	468
Total current	27,687	16,109	6,436
Deferred:
Federal	(1,534)	1,056	1,300
State	(2,301)	3,556	406
Total deferred	(3,835)	4,612	1,706
Total income tax expense	$ 23,852	$ 20,721	$ 8,142

Income Before Provision for Inc

Income Before Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments [Abstract]
Domestic source	$ 59,705	$ 43,069	$ 12,986
Foreign source	2,224	1,915	1,903
Income before provision for income taxes	$ 61,929	$ 44,984	$ 14,889

Reconciliation of Income Taxes

Reconciliation of Income Taxes Computed at U.S. Federal Statutory Rate to Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Income tax expense at statutory rate	$ 21,675	$ 15,747	$ 5,211
State income taxes	2,577	8,038	2,522
Deferred tax impact of reorganization		(2,382)
Nondeductible transaction costs			1,148
Tax benefit of partnership status			(726)
Valuation allowance reversal			(502)
Research and development tax credit	(345)
Foreign rate differential	(328)	(253)	(220)
Deferred tax true-up	69
All other	204	(429)	709
Total income tax expense	$ 23,852	$ 20,721	$ 8,142

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax [Line Items]
Income tax provision (benefits)	$ 23,852,000	$ 20,721,000	$ 8,142,000
Deferred tax benefit	(3,835,000)	4,612,000	$ 1,706,000
Valuation reserve, Recorded	910,000	910,000
Deferred tax assets, current		800,000
Accumulated earnings	$ 118,900,000	80,823,000
Income tax examination description	During the year ended December 31, 2015, the Internal Revenue Service completed an audit of Grubhub Inc.’s and its subsidiaries’ tax return for the year ended December 31, 2013 and proposed no changes. The Company is currently under examination in Illinois for corporate income tax returns for the tax years ended December 31, 2013 and 2012. The Company cannot predict with certainty whether there will be any additional tax liabilities, penalties and/or interest as a result of the audit.
Unrecognized Tax liabilities, interest expense or penalties	$ 0	0
Significant adjustments to unrecognized tax benefits within the next twelve months	Company did not anticipate any significant adjustments to its unrecognized tax benefits caused by the settlement of tax examinations or other factors, within the next twelve months
Unrecognized tax benefits that would impact effective tax rate	$ 1,000,000	1,000,000
Additional Paid-in Capital
Income Tax [Line Items]
Loss carryovers attributable to excess tax benefits	47,500,000
U K Subsidiary
Income Tax [Line Items]
Accumulated earnings	7,700,000
Potential additional taxes payable	1,900,000
State Tax
Income Tax [Line Items]
Increase in deferred tax expense		2,000,000
Loss carryovers attributable to excess tax benefits	$ 5,753,000	9,856,000
Seamless North America, LLC
Income Tax [Line Items]
Income tax provision (benefits)		(400,000)
Deferred tax benefit		(2,200,000)
Increase in deferred tax expense		$ 1,800,000

Deferred Income Tax Assets and

Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Loss and credit carryforwards	$ 5,134	$ 7,212
Accrued expenses	1,934	2,221
Stock-based compensation	8,330	7,752
Total deferred tax assets	15,398	17,185
Valuation allowance	(910)	(910)
Net deferred tax assets	14,488	16,275
Deferred tax liabilities:
Fixed assets	(2,269)	(2,721)
Intangible assets	(99,803)	(104,973)
Total deferred tax liabilities	(102,072)	(107,694)
Net deferred tax liability	$ (87,584)	$ (91,419)

Classification of Net Deferred

Classification of Net Deferred Tax Assets (Liabilities) (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Non-current liabilities	$ (87,584)	$ (91,419)
Net deferred tax liability	$ (87,584)	$ (91,419)

Tax Loss and Credit Carryforwar

Tax Loss and Credit Carryforwards (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
U.S. federal
Tax Credit Carryforward [Line Items]
Tax loss carryforwards		$ 3,284	$ 7,706
Tax credit carryforwards, Expiration year		Dec. 31, 2027
State and Local
Tax Credit Carryforward [Line Items]
Tax loss carryforwards		$ 5,753	9,856
Tax credit carryforwards, Expiration year		Dec. 31, 2027
Contributions Carryforwards
Tax Credit Carryforward [Line Items]
Tax credit carryforwards			166
Tax credit carryforwards, Expiration year		Dec. 31, 2015
Illinois Edge
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	[1]	$ 3,829	2,938
Tax credit carryforwards, Expiration year	[1]	Dec. 31, 2017
New York Unincorporated Business
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	[1]		$ 875
Tax credit carryforwards, Expiration year	[1]	Dec. 31, 2021
[1]	Amounts are before the federal benefit of state tax

Unrecognized Tax Benefit Activi

Unrecognized Tax Benefit Activity Excluding Related Accrual for Interest (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Balance at beginning of period	$ 3,188	$ 1,097
Reductions for tax positions of prior years	(296)	(491)
Additions for tax positions of prior years	40	50
Additions for tax positions of the current year		2,532
Balance at end of period	$ 2,932	$ 3,188

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	Sep. 03, 2014	Apr. 04, 2014	Dec. 31, 2015	Dec. 31, 2014
Class Of Stock [Line Items]
Net proceeds from the issuance of common stock				$ 142,541
Number of votes per share			one vote per share
Common stock, shares authorized			500,000,000	500,000,000
Common stock, shares issued			84,979,869	81,905,325
Common stock, shares outstanding			84,979,869	81,905,325
Treasury stock, shares			0	0
Series A Convertible Preferred Stock, shares authorized			25,000,000	25,000,000
Series A Convertible Preferred Stock, shares issued			0	0
Series A Convertible Preferred Stock, shares outstanding			0	0
Shares of common stock that would require the Company to repurchase these shares at fair value determined at the redemption date		1,344,236
Redeemable common stock converted, conversion ratio			The put rights that would have required the Company to repurchase the Company’s then outstanding redeemable common stock at fair value (as defined in the stockholders agreement) determined at the redemption date were terminated and the shares converted on a one-for-one basis into an aggregate of 1,344,236 shares of common stock upon the closing of the IPO on April 4, 2014
Common stock
Class Of Stock [Line Items]
Issuance of common stock, net of issuance costs (in shares)				5,250,000
IPO
Class Of Stock [Line Items]
Net proceeds		$ 94,900
Initial public offering closing date			Apr. 4, 2014
IPO | Common stock
Class Of Stock [Line Items]
Series A Convertible Preferred Stock, Conversion Description			Upon the closing of the IPO on April 4, 2014, all shares of the Company’s then-outstanding convertible Series A Preferred Stock automatically converted on a one-for-one basis into an aggregate of 19,284,113 shares of common stock
Number of common shares issued upon conversion of preferred stock		1
Number of Series A preferred stock shares converted into common stock		19,284,113
IPO | Underwriting discounts and commissions
Class Of Stock [Line Items]
Offering expenses		$ 6,500
IPO | Other Offering Costs
Class Of Stock [Line Items]
Offering expenses		$ 2,600
IPO | Common Class A
Class Of Stock [Line Items]
Issuance of common stock, net of issuance costs (in shares)		4,000,000
Issuance of common stock price per share		$ 26
Follow-on Offering
Class Of Stock [Line Items]
Net proceeds from the issuance of common stock	$ 47,600
Follow-on Offering | Common stock
Class Of Stock [Line Items]
Issuance of common stock, net of issuance costs (in shares)	1,250,000
Issuance of common stock price per share	$ 40.25
Follow-on Offering | Underwriting discounts and commissions
Class Of Stock [Line Items]
Offering expenses	$ 1,900
Follow-on Offering | Other Offering Costs
Class Of Stock [Line Items]
Offering expenses	$ 800

Retirement Plan - Additional In

Retirement Plan - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan matching contributions amount	$ 1.3	$ 1	$ 0.7
First Eligible Employee Percentage
Defined Benefit Plan Disclosure [Line Items]
Companies matching on eligible employee contribution percentage	100.00%	100.00%	100.00%
Defined benefit plan eligible employee percentage	3.00%	3.00%	3.00%
Second Eligible Employee Percentage
Defined Benefit Plan Disclosure [Line Items]
Companies matching on eligible employee contribution percentage	50.00%	50.00%	50.00%
Defined benefit plan eligible employee percentage	2.00%	2.00%	2.00%

Earnings Per Share Attributab70

Earnings Per Share Attributable to Common Stockholders - Additional Information (Detail) - shares	Apr. 04, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restricted Stock Units
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount		464,930	657	0
Restricted Stock Awards
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount			0	0
Common stock | IPO
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Number of Series A preferred stock shares converted into common stock	19,284,113

Computation of Basic and Dilute

Computation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Earnings Per Share Basic And Diluted By Common Class [Line Items]
Net income	$ 38,077	$ 24,263	$ 6,747
Preferred stock tax distributions		(320)	(1,073)
Basic EPS
Net income attributable to common stockholders	38,077	23,943	5,674
Effect of Dilutive Securities
Preferred stock		320	1,073
Diluted EPS
Net income attributable to common stockholders	$ 38,077	$ 24,263	$ 6,747
Basic EPS, Shares
Weighted average number of shares outstanding, basic	84,076	73,571	40,681
Effect of Dilutive Securities, shares
Preferred stock, shares		4,980	14,390
Diluted EPS, shares
Weighted average number of shares outstanding, diluted	85,706	81,698	56,645
Basic EPS, per share amount
Net income attributable to common stockholders, per share amount	$ 0.45	$ 0.33	$ 0.14
Diluted EPS, per share amount
Net income attributable to common stockholders plus assumed conversions, per share amount	$ 0.44	$ 0.30	$ 0.12
Restricted Stock Units and Restricted Stock Awards
Effect of Dilutive Securities, shares
Stock options, Restricted stock units and restricted stock awards, shares	36
Non-vested stock options
Effect of Dilutive Securities, shares
Stock options, Restricted stock units and restricted stock awards, shares	1,594	3,147	1,574

Anti-dilutive Securities Exclud

Anti-dilutive Securities Excluded from Calculation of Diluted Net Income Per Share (Detail) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stock Options
Anti-dilutive shares underlying stock-based awards:
Anti-dilutive shares underlying stock-based awards	2,380,813	407,328	477,452
Restricted Stock Awards
Anti-dilutive shares underlying stock-based awards:
Anti-dilutive shares underlying stock-based awards		0	0
Restricted Stock Units
Anti-dilutive shares underlying stock-based awards:
Anti-dilutive shares underlying stock-based awards	464,930	657	0

Schedule of Fair Value Assets M

Schedule of Fair Value Assets Measured on Recurring Basis (Detail) - Fair Value, Measurements, Recurring - Level 2 - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, fair value disclosure	$ 165,146	$ 114,521
Money Market Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, fair value disclosure	1,083	1,386
Commercial Paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, fair value disclosure	113,586	38,055
Corporate Bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, fair value disclosure	41,473	$ 75,080
U.S. Government Agency Bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, fair value disclosure	$ 9,004

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($)	2 Months Ended	12 Months Ended
	Feb. 19, 2016	Dec. 31, 2014	Jan. 22, 2016
Subsequent Event [Line Items]
Common stock repurchased and retired		$ 3,239,000
Subsequent Event | Common stock
Subsequent Event [Line Items]
Common stock repurchased and retired	$ 9,800,000
Subsequent Event | Common stock | Maximum
Subsequent Event [Line Items]
Authorized to repurchase of common stock			$ 100,000,000

Schedule of Common Stock Repurc

Schedule of Common Stock Repurchased and Retired (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		2 Months Ended	12 Months Ended
	Feb. 19, 2016	Jan. 31, 2016	Feb. 19, 2016	Dec. 31, 2014
Subsequent Event [Line Items]
Common stock repurchased and retired				$ 3,239
Common stock
Subsequent Event [Line Items]
Common stock repurchased and retired, Shares				147,112
Subsequent Event | Common stock
Subsequent Event [Line Items]
Common stock repurchased and retired, Shares	358,600	148,073	506,673
Common stock repurchased and retired, Average Price Paid per Share	$ 19.51	$ 18.67	$ 19.26
Common stock repurchased and retired			$ 9,800
Number of Shares Purchased as Part of Publicly Announced Plans or Programs | Subsequent Event | Common stock
Subsequent Event [Line Items]
Common stock repurchased and retired, Shares	358,600	148,073	506,673
Value of Shares that May Yet be Purchased Under the Plans or Programs | Subsequent Event | Common stock
Subsequent Event [Line Items]
Common stock repurchased and retired	$ 90,239	$ 97,235

Uncategorized Items - grub-2015

Label	Element	Value
Goodwill Gross	us-gaap_GoodwillGross	$ 352,788,000