GrubHub 10-Q 7 Nov 19 2019 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Nov. 01, 2019
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Trading Symbol	GRUB
Entity Registrant Name	GRUBHUB INC.
Entity Central Index Key	0001594109
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		91,449,376
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	1-36389
Entity Tax Identification Number	46-2908664
Entity Address, Address Line One	111 W. Washington Street
Entity Address, Address Line Two	Suite 2100
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60602
City Area Code	877
Local Phone Number	585-7878
Title of 12(b) Security	Common Stock, $0.0001 par value per share
Security Exchange Name	NYSE
Entity Incorporation, State or Country Code	DE
Document Transition Report	false
Document Quarterly Report	true
Entity Interactive Data Current	Yes

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 394,000	$ 211,245
Short-term investments	32,214	14,084
Accounts receivable, less allowances for doubtful accounts	123,309	110,855
Income tax receivable	2,227	9,949
Prepaid expenses and other current assets	18,632	17,642
Total current assets	570,382	363,775
PROPERTY AND EQUIPMENT:
Property and equipment, net of depreciation and amortization	160,368	119,495
OTHER ASSETS:
Other assets	25,452	14,186
Operating lease right-of-use asset	100,736
Goodwill	1,007,968	1,019,239
Acquired intangible assets, net of amortization	513,848	549,013
Total other assets	1,648,004	1,582,438
TOTAL ASSETS	2,378,754	2,065,708
CURRENT LIABILITIES:
Restaurant food liability	130,544	127,344
Accounts payable	23,392	26,656
Accrued payroll	22,537	18,173
Current portion of long-term debt		6,250
Current operating lease liability	8,056
Other accruals	59,686	44,745
Total current liabilities	244,215	223,168
LONG-TERM LIABILITIES:
Deferred taxes, non-current	28,681	46,383
Noncurrent operating lease liability	111,554
Long-term debt	492,776	335,548
Other accruals	817	18,270
Total long-term liabilities	633,828	400,201
Commitments and contingencies
STOCKHOLDERS’ EQUITY:
Preferred Stock, $0.0001 par value. Authorized: 25,000,000 shares as of September 30, 2019 and December 31, 2018; issued and outstanding: no shares as of September 30, 2019 and December 31, 2018.
Common stock, $0.0001 par value. Authorized: 500,000,000 shares at September 30, 2019 and December 31, 2018; issued and outstanding: 91,412,557 and 90,756,548 shares as of September 30, 2019 and December 31, 2018, respectively	9	9
Accumulated other comprehensive loss	(2,346)	(1,891)
Additional paid-in capital	1,144,541	1,094,866
Retained earnings	358,507	349,355
Total stockholders’ equity	1,500,711	1,442,339
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 2,378,754	$ 2,065,708

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Preferred Stock, par value	$ 0.0001	$ 0.0001
Preferred Stock, shares authorized	25,000,000	25,000,000
Preferred Stock, shares issued	0	0
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	91,412,557	90,756,548
Common stock, shares outstanding	91,412,557	90,756,548

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Revenues	$ 322,053	$ 247,225	$ 970,881	$ 719,536
Costs and expenses:
Operations and support	161,387	111,511	485,143	310,239
Sales and marketing	71,617	49,426	224,199	144,413
Technology (exclusive of amortization)	29,483	21,258	86,133	57,306
General and administrative	25,329	22,195	73,900	58,072
Depreciation and amortization	30,649	20,987	82,961	61,787
Total costs and expenses	318,465	225,377	952,336	631,817
Income from operations	3,588	21,848	18,545	87,719
Interest expense - net	6,025	337	14,304	1,367
Income (loss) before provision for income taxes	(2,437)	21,511	4,241	86,352
Income tax (benefit) expense	(3,447)	(1,234)	(4,911)	2,721
Net income attributable to common stockholders	$ 1,010	$ 22,745	$ 9,152	$ 83,631
Net income per share attributable to common stockholders:
Basic	$ 0.01	$ 0.25	$ 0.10	$ 0.94
Diluted	$ 0.01	$ 0.24	$ 0.10	$ 0.91
Weighted-average shares used to compute net income per share attributable to common stockholders:
Basic	91,349	90,494	91,159	89,027
Diluted	92,847	93,678	92,850	92,091

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 1,010	$ 22,745	$ 9,152	$ 83,631
OTHER COMPREHENSIVE LOSS
Foreign currency translation adjustments	(366)	(92)	(455)	(392)
COMPREHENSIVE INCOME	$ 644	$ 22,653	$ 8,697	$ 83,239

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 9,152	$ 83,631
Adjustments to reconcile net income to net cash from operating activities:
Depreciation	21,665	16,189
Amortization of intangible assets and developed software	61,296	45,598
Stock-based compensation	54,806	36,445
Deferred taxes	(6,208)	2,048
Other	5,210	4,572
Change in assets and liabilities, net of the effects of business acquisitions:
Accounts receivable	(13,335)	(17,969)
Income taxes receivable	7,722	(5,533)
Prepaid expenses and other assets	(11,955)	(15,455)
Restaurant food liability	3,247	1,608
Accounts payable	(50)	5,265
Accrued payroll	4,366	5,311
Other accruals	20,088	3,752
Net cash provided by operating activities	156,004	165,462
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of investments	(49,506)	(47,642)
Proceeds from maturity of investments	31,736	54,916
Capitalized website and development costs	(35,068)	(21,471)
Purchases of property and equipment	(42,702)	(31,984)
Acquisition of other intangible assets	(8,889)	0
Acquisitions of businesses, net of cash acquired	127	(366,856)
Other cash flows from investing activities	(250)	38
Net cash used in investing activities	(104,552)	(412,999)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	500,000	175,000
Repayments of borrowings under the credit facility	(342,313)	(52,344)
Proceeds from the issuance of common stock		200,000
Taxes paid related to net settlement of stock-based compensation awards	(20,503)	(28,238)
Proceeds from exercise of stock options	4,040	13,010
Payments for debt issuance costs	(9,136)
Net cash provided by financing activities	132,088	307,428
Net change in cash, cash equivalents, and restricted cash	183,540	59,891
Effect of exchange rates on cash, cash equivalents and restricted cash	(293)	(406)
Cash, cash equivalents, and restricted cash at beginning of year	215,802	238,239
Cash, cash equivalents, and restricted cash at end of the period	399,049	297,724
SUPPLEMENTAL DISCLOSURE OF NON-CASH ITEMS
Cash paid for income taxes	567	7,508
Capitalized property, equipment and website and development costs in accounts payable at period end	4,659	4,069
Net working capital adjustment receivable		530
Fair value of equity awards assumed on acquisition		2,594
RECONCILIATION OF CASH, CASH EQUIVALENTS, AND RESTRICTED CASH
Cash and cash equivalents	394,000	$ 294,550
Restricted cash included in prepaid expenses and other current assets	$ 1,907
Restricted Cash, Current, Asset, Statement of Financial Position [Extensible List]	us-gaap:PrepaidExpenseAndOtherAssetsCurrent	us-gaap:PrepaidExpenseAndOtherAssetsCurrent
Restricted cash included in other assets	$ 3,142	$ 3,174
Restricted Cash, Noncurrent, Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent	us-gaap:OtherAssetsNoncurrent
Total cash, cash equivalents, and restricted cash	$ 399,049	$ 297,724

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common stock	Additional Paid-in Capital	Accumulated other comprehensive loss	Retained earnings
Balance, beginning at Dec. 31, 2017	$ 1,117,816	$ 9	$ 849,043	$ (1,228)	$ 269,992
Balance, beginning (in shares) at Dec. 31, 2017		86,790,624
Net income	83,631				83,631
Cumulative effect adjustment upon adoption of ASU | ASU 2016-09	882				882
Currency translation	(392)			(392)
Stock-based compensation	42,755		42,755
Stock option exercises and vesting of restricted stock units, net of withholdings and other	13,010		13,010
Stock option exercises and vesting of restricted stock units, net of withholdings and other (in shares)		1,283,896
Shares repurchased and retired to satisfy tax withholding upon vesting	(28,238)		(28,238)
Shares repurchased and retired to satisfy tax withholding upon vesting (in shares)		(296,725)
Issuance of common stock, investment	200,000		200,000
Issuance of common stock, investments		2,820,464
Stock-based compensation, acquisitions	2,594		2,594
Balance, ending at Sep. 30, 2018	1,432,058	$ 9	1,079,164	(1,620)	354,505
Balance, ending (in shares) at Sep. 30, 2018		90,598,259
Balance, beginning at Jun. 30, 2018	1,396,408	$ 9	1,066,167	(1,528)	331,760
Balance, beginning (in shares) at Jun. 30, 2018		90,337,427
Net income	22,745				22,745
Currency translation	(92)			(92)
Stock-based compensation	16,872		16,872
Stock option exercises and vesting of restricted stock units, net of withholdings and other	3,052		3,052
Stock option exercises and vesting of restricted stock units, net of withholdings and other (in shares)		337,128
Shares repurchased and retired to satisfy tax withholding upon vesting	(9,521)		(9,521)
Shares repurchased and retired to satisfy tax withholding upon vesting (in shares)		(76,296)
Stock-based compensation, acquisitions	2,594		2,594
Balance, ending at Sep. 30, 2018	1,432,058	$ 9	1,079,164	(1,620)	354,505
Balance, ending (in shares) at Sep. 30, 2018		90,598,259
Balance, beginning at Dec. 31, 2018	1,442,339	$ 9	1,094,866	(1,891)	349,355
Balance, beginning (in shares) at Dec. 31, 2018		90,756,548
Net income	9,152				9,152
Currency translation	(455)			(455)
Stock-based compensation	66,138		66,138
Stock option exercises and vesting of restricted stock units, net of withholdings and other	4,040		4,040
Stock option exercises and vesting of restricted stock units, net of withholdings and other (in shares)		934,911
Shares repurchased and retired to satisfy tax withholding upon vesting	(20,503)		(20,503)
Shares repurchased and retired to satisfy tax withholding upon vesting (in shares)		(278,902)
Balance, ending at Sep. 30, 2019	1,500,711	$ 9	1,144,541	(2,346)	358,507
Balance, ending (in shares) at Sep. 30, 2019		91,412,557
Balance, beginning at Jun. 30, 2019	1,481,700	$ 9	1,126,174	(1,980)	357,497
Balance, beginning (in shares) at Jun. 30, 2019		91,230,916
Net income	1,010				1,010
Currency translation	(366)			(366)
Stock-based compensation	22,400		22,400
Stock option exercises and vesting of restricted stock units, net of withholdings and other	1,110		1,110
Stock option exercises and vesting of restricted stock units, net of withholdings and other (in shares)		258,384
Shares repurchased and retired to satisfy tax withholding upon vesting	(5,143)		(5,143)
Shares repurchased and retired to satisfy tax withholding upon vesting (in shares)		(76,743)
Balance, ending at Sep. 30, 2019	$ 1,500,711	$ 9	$ 1,144,541	$ (2,346)	$ 358,507
Balance, ending (in shares) at Sep. 30, 2019		91,412,557

Organization

Organization	9 Months Ended
	Sep. 30, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization	1. Organization Grubhub Inc., a Delaware corporation, and its wholly-owned subsidiaries (collectively referred to as the “Company”) provide an online and mobile takeout marketplace for restaurant pick-up and delivery orders. The Company connects diners and restaurants through restaurant technology and easy-to-use platforms. 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. The Company primarily charges the restaurant a per order commission that is primarily percentage-based. In many markets, the Company also provides delivery services to restaurants on its platform that do not have their own delivery operations. The Company’s takeout marketplace, and related platforms where the Company provides marketing services to generate orders, are collectively referred to as the “Platform”.

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Significant Accounting Policies	2. Significant Accounting Policies Basis of Presentation and Principles of Consolidation The accompanying unaudited condensed consolidated interim financial statements include the accounts of Grubhub Inc. and have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in accordance with the rules and regulations of the United States Securities and Exchange Commission (the “SEC”). Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. These unaudited condensed consolidated interim financial statements include all wholly-owned subsidiaries and reflect all normal and recurring adjustments, as well as any other than normal adjustments, that are, in the opinion of management, necessary for a fair presentation of the results for the interim periods and should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018 filed with the SEC on February 28, 2019 (the “2018 Form 10-K”). All significant intercompany transactions have been eliminated in consolidation. Operating results for the three and nine months ended September 30, 2019 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2019. Use of Estimates The preparation of condensed consolidated financial statements in accordance 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. Significant items subject to such estimates, judgments and assumptions include revenue recognition, website and internal-use software development costs, goodwill, recoverability of intangible assets with finite lives and other long-lived assets, stock-based compensation, and income taxes. Actual results could differ from these estimates. Changes in Accounting Principle See “ Recently Issued Accounting Pronouncements ” below for a description of accounting principle changes adopted during the nine months ended September 30, 2019 related to leases. Recently Issued Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update No. 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). ASU 2016-13 introduces a new forward-looking approach, based on expected losses, to estimate credit losses on certain types of financial instruments, including trade receivables and held-to-maturity debt securities, which will require entities to incorporate considerations of historical information, current information and reasonable and supportable forecasts. This ASU also expands disclosure requirements. ASU 2016-13 is effective for the Company beginning in the first quarter of 2020 and early adoption is permitted. The guidance will be applied using the modified-retrospective approach. The adoption of ASU 2016-13 is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows. In February 2016, and in subsequent updates, the FASB issued Accounting Standards Codification Topic 842, Leases million and lease liabilities for operating leases of $ 97.7 million but did not result in a cumulative-effect adjustment on retained earnings. The operating lease right-of-use asset includes the impact upon adoption of ASC Topic 842 of the derecognition of lease incentives, deferred rent, below-market lease intangibles, cease-use liabilities and prepaid rent balances recognized in prepaid expenses and other current assets and current and noncurrent other accruals on the consolidated balance sheets as of December 31, 2018. The adoption of ASC Topic 842 did not have and is not expected to have a material impact to the Company's consolidated results of operations or cash flows. See Note 7, Commitments and Contingencies , for additional details.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Acquisitions	3. Acquisitions There were no acquisitions during the nine months 2018 Acquisitions On November 7, 2018 On September 13, 2018, the Company acquired SCVNGR, Inc. d/b/a LevelUp (“LevelUp”) for approximately $369.4 million, including $366.8 million of cash paid (net of cash acquired of $6.0 million) and $2.6 million of other non-cash consideration. LevelUp is a leading provider of mobile diner engagement and payment solutions for national and regional restaurant brands. The acquisition of LevelUp has simplified the Company’s integrations with restaurants’ systems, increased diner engagement and accelerated product development. The Company assumed Tapingo and LevelUp employees’ unvested incentive stock option (“ISO”) awards as of the respective closing dates. Approximately $0.4 million and $2.6 million of the fair value of the assumed ISO awards granted to acquired Tapingo and LevelUp employees, respectively, was attributable to the pre-combination services of the awardees and was included in the respective purchase prices. These amounts are reflected within goodwill in the respective purchase price allocations. As of the respective acquisition dates, aggregate post-combination expense of approximately $21.4 million was expected to be recognized related to the combined assumed ISO awards over the remaining post-combination service period. The results of operations of Tapingo and LevelUp have been included in the Company’s financial statements since November 7, 2018 and September 13, 2018, respectively . The excess of the consideration transferred in the acquisitions over the amounts assigned to the fair value of the assets acquired was recorded as goodwill, which represents the value of LevelUp’s technology team, the ability to simplify integrations with restaurants on the Company’s platform, and the expanded breadth and depth of the Company’s network of diners and campus relationships The assets acquired and liabilities assumed of Tapingo and LevelUp were recorded at their estimated fair values as of the closing dates of November 7, 2018 and September 13, 2018, respectively. See Note 5, Goodwill and Acquired Intangible Assets nine months ended September 30, 2019 The following table summarizes the final purchase price allocation acquisition-date fair values of the assets and liabilities acquired in connection with the Tapingo and LevelUp acquisitions: Tapingo LevelUp Total (in thousands) Accounts receivable $ 3,101 $ 6,201 $ 9,302 Prepaid expenses and other current assets 843 1,396 2,239 Property and equipment — 895 895 Other assets 163 — 163 Restaurant relationships 11,279 10,217 21,496 Diner acquisition — 3,912 3,912 Below-market lease intangible — 2,205 2,205 Developed technology 9,755 20,107 29,862 Goodwill 121,908 296,198 418,106 Net deferred tax asset 9,582 31,545 41,127 Accounts payable and accrued expenses (4,573 ) (3,249 ) (7,822 ) Total purchase price net of cash acquired $ 152,058 $ 369,427 $ 521,485 Fair value of assumed ISOs attributable to pre-combination service (372 ) (2,594 ) (2,966 ) Net cash paid $ 151,686 $ 366,833 $ 518,519 Additional Information 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 restaurant relationships, diner acquisition and developed technology as follows: Valuation Method Tapingo LevelUp Restaurant relationships Multi-period excess earnings With or without comparative business valuation Diner acquisition n/a Cost to recreate Developed technology Cost to recreate Multi-period excess earnings The fair value of the LevelUp below-market lease was measured based on the present value of the difference between the contractual amounts to be paid pursuant to the lease and an estimate of current fair market lease rates measured over the non-cancelable remaining term of the lease. As of January 1, 2019, the below-market lease intangible asset was derecognized from acquired intangible assets resulting in a corresponding adjustment to the opening balance of operating lease right-of-use assets on the condensed consolidated balance sheets upon adoption of ASC Topic 842. 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 Company incurred certain expenses directly and indirectly related to acquisitions which were recognized in general and administrative expenses within the condensed consolidated statements of operations of $1.2 million and $2.6 million for the three months ended September 30, 2019 and 2018, respectively, and of $2.0 million and $5.1 million for the nine months ended September 30, 2019 and 2018, respectively. Pro Forma (unaudited) The following unaudited pro forma information presents a summary of the operating results of the Company for the three and nine months ended September 30, 2018 as if the acquisitions of Tapingo and LevelUp had occurred as of January 1 of the year prior to acquisition: Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 (in thousands, except per share data) Revenues $ 257,972 $ 752,324 Net income 18,090 60,826 Net income per share attributable to common shareholders: Basic $ 0.20 $ 0.68 Diluted $ 0.19 $ 0.66 The pro forma adjustments that reflect the amortization that would have been recognized for intangible assets, elimination of transaction costs incurred, stock-based compensation expense for assumed equity awards and interest expense for transaction financings, as well as the pro forma tax impact of such adjustments for the three and nine months ended September 30, 2018 were as follows: Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 (in thousands) Depreciation and amortization $ 1,337 $ 4,403 Transaction costs (2,645 ) (5,010 ) Stock-based compensation (41 ) 3,581 Interest expense 432 1,441 Income tax (benefit) expense 272 (1,306 ) The unaudited pro forma revenues and net income are not intended to represent or be indicative of the Company’s condensed consolidated results of operations or financial condition that would have been reported had the acquisitions been completed as of the beginning of the

Marketable Securities

Marketable Securities	9 Months Ended
	Sep. 30, 2019
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 September 30, 2019 and December 31, 2018 were as follows: September 30, 2019 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value (in thousands) Cash and cash equivalents Commercial paper $ 26,124 $ — $ (67 ) $ 26,057 Short-term investments Commercial paper 29,408 — (152 ) 29,256 Corporate bonds 2,806 2 — 2,808 Total $ 58,338 $ 2 $ (219 ) $ 58,121 December 31, 2018 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value (in thousands) Cash and cash equivalents Commercial paper $ 12,097 $ — $ (21 ) $ 12,076 Corporate bonds 870 — — 870 Short-term investments Commercial paper 13,334 — (88 ) 13,246 Corporate bonds 750 — — 750 Total $ 27,051 $ — $ (109 ) $ 26,942 All of the Company’s marketable securities were classified as held-to-maturity investments and have maturities within one year of September 30, 2019 . 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 September 30, 2019 and December 31, 2018 were as follows: September 30, 2019 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 $ 55,313 $ (219 ) $ — $ — $ 55,313 $ (219 ) Total $ 55,313 $ (219 ) $ — $ — $ 55,313 $ (219 ) December 31, 2018 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 $ 25,322 $ (109 ) $ — $ — $ 25,322 $ (109 ) Corporate bonds 750 — — — 750 — Total $ 26,072 $ (109 ) $ — $ — $ 26,072 $ (109 ) The Company recognized interest income during each of the three months ended September 30, 2019 and 2018 of $1.3 million, and for the nine months ended September 30, 2019 and 2018 of $2.7 million and $3.2 million, respectively, within net interest expense on the condensed consolidated statements of operations. During the three and nine months ended September 30, 2019 and 2018, the Company did not recognize any other-than-temporary impairment losses related to its marketable securities. The Company’s marketable securities are classified within Level 2 of the fair value hierarchy (see Note 13, Fair Value Measurement,

Goodwill and Acquired Intangibl

Goodwill and Acquired Intangible Assets	9 Months Ended
	Sep. 30, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Acquired Intangible Assets	5. Goodwill and Acquired Intangible Assets The components of acquired intangible assets as of September 30, 2019 and December 31, 2018 were as follows: September 30, 2019 December 31, 2018 Gross Carrying Amount Accumulated Amortization Net Value Gross Amount Accumulated Amortization Net Value (in thousands) Restaurant relationships $ 497,788 $ (126,661 ) $ 371,127 $ 494,278 $ (103,457 ) $ 390,821 Diner acquisition 48,293 (17,494 ) 30,799 47,541 (10,306 ) 37,235 Developed technology 35,826 (13,859 ) 21,967 38,385 (10,247 ) 28,138 Other 2,918 (2,639 ) 279 3,676 (2,615 ) 1,061 Trademarks — — — 2,225 (2,225 ) — Below-market lease intangible — — — 2,206 (124 ) 2,082 Total amortizable intangible assets 584,825 (160,653 ) 424,172 588,311 (128,974 ) 459,337 Indefinite-lived trademarks 89,676 — 89,676 89,676 — 89,676 Total acquired intangible assets $ 674,501 $ (160,653 ) $ 513,848 $ 677,987 $ (128,974 ) $ 549,013 The Company acquired $3.5 million during the nine months ended September 30, 2019. September 30, 2019 he acquired below-market lease intangible was derecognized resulting in a corresponding adjustment to the operating lease right-of-use asset within the condensed consolidated balance sheets as of January 1, 2019. Amortization of the acquired below-market lease intangible was recognized as rent expense within the condensed consolidated statements of operations. See Note 7, Commitments and Contingencies, for further details. Amortization expense for acquired intangible assets recognized within depreciation and amortization on the condensed consolidated statements of operations was $13.5 million and $10.0 million for the three months ended September 30, 2019 and 2018, respectively, and $37.3 million and $31.1 million for the nine months The change in the carrying amount of goodwill during the nine months ended September 30, 2019, which was primarily related to changes in the fair value of net deferred tax assets for the purchase price allocations of the Tapingo and LevelUp acquisitions during the measurement period, was as follows: Goodwill Accumulated Impairment Losses Net Book Value (in thousands) Balance as of December 31, 2018 $ 1,019,239 $ — $ 1,019,239 Acquisitions - measurement period adjustments (11,271 ) — (11,271 ) Balance as of September 30, 2019 $ 1,007,968 $ — $ 1,007,968 Estimated future amortization expense of acquired intangible assets as of September 30, 2019 was as follows: (in thousands) The remainder of 2019 $ 13,367 2020 45,645 2021 38,812 2022 36,843 2023 30,348 Thereafter 259,157 Total $ 424,172

Property and Equipment

Property and Equipment	9 Months Ended
	Sep. 30, 2019
Property Plant And Equipment [Abstract]
Property and Equipment	6. Property and Equipment The components of the Company’s property and equipment as of September 30, 2019 and December 31, 2018 were as follows: September 30, 2019 December 31, 2018 (in thousands) Developed software $ 136,904 $ 90,302 Computer equipment 68,351 50,767 Leasehold improvements 53,119 39,550 Furniture and fixtures 14,361 10,801 Purchased software and digital assets 11,100 4,696 Construction in progress 214 1,976 Property and equipment 284,049 198,092 Accumulated depreciation and amortization (123,681 ) (78,597 ) Property and equipment, net $ 160,368 $ 119,495 The Company recorded depreciation and amortization expense for property and equipment other than developed software of $8.1 million and $5.7 million for the three months ended September 30, 2019 and 2018, respectively, and $21.7 million and $16.2 million for the nine months The Company capitalized developed software costs of $16.5 million and $10.8 million for the three months ended September 30, 2019 and 2018, respectively, and $46.8 million and $28.1 million for the nine months

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2019
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	7. Commitments and Contingencies Leases As of September 30, 2019 leases under right of first offer terms at fair value at the time of renewal for a period of five years . The Company's lease terms include options to extend or terminate the lease when it is reasonably certain that it will exercise that option. The Company determines if an arrangement is a lease at inception of a contract. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Non-lease components associated with lease components in the Company’s lease contracts are treated as a single lease component. As of September 30, 2019 The components of lease costs, which consist of rent expense for leased office space, during the three and nine months ended September 30, 2019 Three Months Ended September 30, 2019 Nine Months Ended September 30, 2019 (in thousands) Fixed operating lease cost $ 4,591 $ 12,344 Short-term lease cost 531 1,384 Sublease income (318 ) (490 ) Total lease cost $ 4,804 $ 13,238 Supplemental cash flow information related to the Company’s operating leases as well as the weighted-average lease term and discount rate as of September 30, 2019 Nine Months Ended September 30, 2019 Cash paid for operating lease liabilities (in thousands) $ 10,298 Operating lease assets obtained in exchange for new operating lease obligations (in thousands) $ 28,109 Weighted-average remaining lease term (years) 9.1 Weighted-average discount rate 5.0 % Future lease payments under the Company’s operating lease agreements as of September 30, 2019 (in thousands) The remainder of 2019 $ 3,383 2020 10,302 2021 18,522 2022 16,530 2023 16,605 Thereafter 87,496 Total future lease payments $ 152,838 Less interest (33,228 ) Present value of lease liabilities $ 119,610 The table above does not reflect the Company’s option to exercise early termination rights or the payment of related early termination fees. Lease incentives reduce lease payments in the period in which they are expected to be received. As previously reported in the 2018 Form 10-K under ASC Topic 840, future minimum lease payments under the Company’s operating lease agreements that had initial or remaining non-cancelable lease terms in excess of one year as of December 31, 2018 were as follows: (in thousands) 2019 $ 13,009 2020 14,874 2021 14,243 2022 12,219 2023 12,220 Thereafter 57,503 Total $ 124,068 Legal In August 2011, Ameranth, Inc. (“Ameranth”) filed a patent infringement action against a number of defendants, including Grubhub Holdings Inc., in the U.S. District Court for the Southern District of California, Case No. 3:11-cv-1810. Ameranth subsequently initiated additional actions for infringement of a related patent, including separate actions against Grubhub Holdings Inc., Case No. 3:12-cv-739, and Seamless North America, LLC, Case No. 3:12-cv-737, which were consolidated along with approximately 40 other cases Ameranth filed in the same district. In September 2018, the district court granted summary judgment (on another defendant’s motion) of unpatentability on the sole remaining patent and vacated the December 3, 2018 jury trial date for the claims against Grubhub Holdings Inc. and Seamless North America, LLC. In October 2018, the district court entered final judgment on all claims in the case in which summary judgment was granted, and then stayed the remaining cases (including the cases against Grubhub and Seamless). Ameranth then appealed this decision to the U.S. Court of Appeals for the Federal Circuit. 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 September 30, 2019 In addition to the matter described above, from time to time, the Company is involved in various other legal proceedings arising from the normal course of business activities, including labor and employment claims, some of which relate to the alleged misclassification of independent contractors. In September 2015, a claim was brought in the United States District Court for the Northern District of California under the Private Attorneys General Act by an individual plaintiff on behalf of himself and seeking to represent other drivers and the State of California. The claim sought monetary penalties and injunctive relief for alleged violations of the California Labor Code based on the alleged misclassification of drivers as independent contractors. The Company does not believe any of the foregoing claims will have a material impact on its consolidated financial statements. However, Indemnification In connection with the merger of Seamless North America, LLC, Seamless Holdings Corporation and Grubhub Holdings Inc. in August 2013, the Company agreed to indemnify Aramark Holdings Corporation for negative income tax consequences associated with the October 2012 spin-off of Seamless Holdings Corporation that were the result of certain actions taken by the Company through October 29, 2014, in certain instances subject to a $15.0 million limitation. Management is not aware of any actions that would impact the indemnification obligation.

Debt

Debt	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Debt	8. Debt The following table summarizes the carrying value of the Company’s debt as of September 30, 2019 and December 31, 2018: September 30, 2019 December 31, 2018 (in thousands) Senior Notes $ 500,000 $ — Term loan — 120,312 Revolving loan — 222,000 Total debt $ 500,000 $ 342,312 Less current portion — (6,250 ) Less unamortized deferred debt issuance costs (7,224 ) (514 ) Long-term debt $ 492,776 $ 335,548 Senior Notes On June 10, 2019, the Company’s wholly-owned subsidiary, Grubhub Holdings Inc., issued $500.0 million in aggregate principal amount of 5.500% senior notes due July 1, 2027 (“Senior Notes”) in a private placement exempt from the registration requirements of the Securities Act of 1933, as amended The Senior Notes were issued pursuant to an indenture, dated June 10, 2019 (the “Indenture”), among Grubhub Holdings Inc., the guarantors party thereto and Wilmington Trust, National Association, as trustee. The Company has the option to redeem all or a portion of the Senior Notes at any time on or after July 1, 2022 by paying 100.0% of the principal amount of the Senior Notes plus a declining premium, plus accrued and unpaid interest to (but excluding) the redemption date. The premium declines from 2.750% during the twelve months on and after July 1, 2022, to 1.833% during the twelve months on and after July 1, 2023, to 0.917% during the twelve months on and after July 1, 2024, to zero on and after July 1, 2025. The Company may also redeem all or any portion of the Senior Notes at any time prior to July 1, 2022, at a price equal to 100.0% of the aggregate principal amount thereof plus a make-whole premium set forth in the Indenture and accrued and unpaid interest, if any. In addition, before July 1, 2022, the Company may redeem up to 40% of the aggregate principal amount of the Senior Notes with the net proceeds of certain equity offerings at a redemption price of 105.5% of the principal amount plus accrued and unpaid interest, if any, provided that certain conditions are met. In the event of a Change of Control Triggering Event (as defined in the Indenture), the Company will be required to make an offer to purchase the Senior Notes at a price equal to 101.0% of their principal amount, plus accrued and unpaid interest. The Senior Notes are guaranteed on a senior unsecured basis by the Company and each of its existing and future wholly owned domestic restricted subsidiaries that guarantees the credit facility or that guarantees certain of our other indebtedness or indebtedness of a guarantor. The Indenture contains customary covenants that, among other things, restrict the ability of the Company and the ability of certain of its subsidiaries to incur additional debt or issue preferred shares; create liens on certain assets to secure debt; and consolidate, merge, sell or otherwise dispose of all or substantially all of the Company’s assets. These covenants are subject to a number of important exceptions and qualifications and also include customary events of default. Credit Agreement On February 6, 2019, the Company entered into an amended and restated credit agreement (the “Credit Agreement”) which provides, among other things , for aggregate revolving loans up to $225 million and provided for term loans in an aggregate principal amount of $325 million. The $325 million term loan portion of the Credit Agreement was extinguished on June 10, 2019. In addition to the $225 million aggregate undrawn revolving loans under the Credit Agreement as of September 30, 2019, the Company may incur up to $250 million of incremental revolving or term loans pursuant to the terms and conditions of the Credit Agreement. The credit facility under the Credit Agreement will be available to the Company until February 5, 2024. The Credit Agreement amended and restated the Company’s prior $350 million credit facility, which was due to expire on October 9, 2022. There have been no changes in the terms of the Credit Agreement as described in Part II, Item 8, Note 16, Subsequent Events , to the Company’s 2018 Form 10-K. Other Information During the nine months ended September 30, 2019, proceeds from the sale of the Senior Notes and cash on hand were used to pay down the principal balance outstanding under the Credit Agreement of $342.3 million. As of September 30, 2019, the Company’s outstanding debt consisted of $500.0 million in Senior Notes. There were no outstanding borrowings under the Credit Agreement as of September 30, 2019. The fair value of the Company’s Senior Notes exceeded their carrying value as of Fair Value Measurement . The Company was in compliance with the financial covenants of its debt facilities as of . Additional capacity under the Credit Agreement may be used for general corporate purposes, including funding working capital and future acquisitions The Company capitalized $9.1 million of debt issuance costs during the nine months September 30, 2019 As of September 30, 2019, unamortized debt issuance costs of $1.2 million related to the revolving loan facility and $7.2 million related to the Senior Notes were recorded as other assets and as a reduction of long-term debt, respectively, on the condensed consolidated balance sheets. As of December 31, 2018, total unamortized debt issuance costs of $1.9 million were recorded as other assets and as a reduction of long-term debt on the condensed consolidated balance sheets in proportion to the borrowing capacities of the revolving and term loans. Interest expense includes interest on outstanding borrowings, amortization of debt issuance costs and commitment fees on the undrawn portion available under the credit facility. The Company recognized interest expense of $7.3 million and $1.7 million during the three months ended September 30, 2019 and 2018, respectively, and $17.0 million and $4.6 million during the nine months ended September 30, 2019 and 2018, respectively. Interest expense for the nine months ended September 30, 2019 included $1.9 million for the write-off of unamortized debt issuance costs upon extinguishment of the term loan facility and the amendment of the Credit Agreement.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	9. Stock-Based Compensation The Company has granted non-qualified and incentive stock options, restricted stock units and restricted stock awards under its incentive plans. In May 2019 , the Company’s stockholders approved an Amendment to the Grubhub Inc. 2015 Long-Term Incentive Plan (the “2015 Plan”) which increased the aggregate number of shares that may be issued under the 2015 Plan by 5,000,000 shares. As of September 30, 2019, there were 5,770,531 shares of common stock authorized and available for issuance pursuant to awards granted under the 2015 Plan. Stock-based Compensation Expense The total stock-based compensation expense related to all stock-based awards was $18.3 million and $14.2 million during the three months ended September 30, 2019 nine months ended September 30, 2019 and 2018, respectively As of September 30, 2019, $224.8 million of total unrecognized stock-based compensation expense is expected to be recognized over a weighted-average period of 2.9 years. Excess tax benefits reflect the total realized value of the Company’s tax deductions from individual stock option exercise transactions and the vesting of restricted stock units in excess of the deferred tax assets that were previously recorded. During the three months ended September 30, 2019 and the Company recognized excess tax benefits from stock-based compensation of $0.4 million and $7.6 million, respectively, and $3.8 million and $21.5 million during the nine months ended September 30, 2019 and 2018, respectively, within income tax (benefit) expense on the condensed consolidated statements of operations and within cash flows from operating activities on the condensed consolidated statements of cash flows. The Company capitalized stock-based compensation expense as website and software development costs of $4.1 million and $2.6 $11.3 Stock Options The Company granted 333,929 and 347,891 stock options under the Grubhub Inc. 2015 Long-Term Incentive Plan during the nine months ended September 30, 2019 and 2018, respectively. During the nine months ended September 30, 2018, the Company also assumed 236,414 unvested ISOs with the acquisition of LevelUp. 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 volatility is based on the historical and implied volatilities of the Company’s own common stock The Company uses historical data to estimate option exercises and employee terminations within the valuation model. Separate groups of employees that have similar historical exercise behavior are considered separately for valuation purposes. The risk-free rate for the period within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant The assumptions used to determine the fair value of the stock options granted during the nine months ended September 30, 2019 and 2018 were as follows: Nine Months Ended September 30, 2019 2018 Weighted-average fair value options granted $ 30.91 $ 65.86 Average risk-free interest rate 2.42 % 2.55 % Expected stock price volatility 48.3 % 46.1 % Dividend yield None None Expected stock option life (years) 4.00 3.64 (a) (a) The expected term for the LevelUp assumed ISO awards was calculated based on their respective remaining vesting periods as of the acquisition date. Stock option awards as of December 31, 2018 and September 30, 2019, and changes during the ended , were as follows Options Weighted-Average Exercise Price Aggregate Intrinsic Value (thousands) Weighted-Average Exercise Term (years) Outstanding at December 31, 2018 2,650,839 $ 33.13 $ 120,977 6.87 Granted 333,929 76.98 Forfeited (29,654 ) 83.93 Exercised (183,383 ) 22.03 Outstanding at September 30, 2019 2,771,731 38.60 67,225 6.52 Vested and expected to vest at September 30, 2019 2,770,154 38.58 67,225 6.52 Exercisable at September 30, 2019 1,892,474 $ 27.88 $ 58,314 5.69 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. was $2.3 September 30, 2019 and $9.9 million and $36.1 million nine months The Company recorded compensation expense for stock options of $3.5 million and $4.5 million for the three months ended September 30, 2019 nine months Restricted Stock Units Non-vested restricted stock units as of December 31, 2018 September 30, 2019 nine months September 30, 2019 Restricted Stock Units Shares Weighted-Average Grant Date Fair Value Outstanding at December 31, 2018 2,328,857 $ 67.33 Granted 1,990,613 74.54 Forfeited (468,204 ) 69.45 Vested (751,528 ) 60.52 Cancelled (52,357 ) 85.39 Outstanding at September 30, 2019 3,047,381 $ 73.36 C ompensation expense related to restricted stock units was $14.8 million and $9.7 million during the three months ended September 30, 2019 nine months September 30, 2019 2018 nine months September 30, 2019 2018 September 30, 2019

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	10. Income Taxes The Company’s effective tax rate was negative (benefit) 141.4% and 5.7% during the three months ended September 30, 2019 nine months September 30, 2019 nine months Stock-based Compensation

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Stockholders' Equity	11. Stockholders’ Equity As of September 30, 2019 and December 31, 2018 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 September 30, 2019 and December 31, 2018, there were 500,000,000 shares of common stock authorized. At September 30, 2019 and December 31, 2018, there were 91,412,557 and 90,756,548 shares issued and outstanding, respectively. The Company did not hold any shares as treasury shares as of September 30, 2019 or December 31, 2018. On April 25, 2018, the Company issued and sold 2,820,464 shares of the Company’s common stock to Yum Restaurant Services Group, LLC (the “Investor”), a wholly owned subsidiary of Yum! Brands, Inc., for an aggregate purchase price of $200.0 million pursuant to an investment agreement dated February 7, 2018, by and between the Company and the Investor. The Company has used and expects to use the proceeds for general corporate purposes. On January 22, 2016, the Company’s Board of Directors 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 repurchase program was announced on January 25, 2016. Repurchased stock may be retired or held as treasury shares. The repurchase authorizations do not obligate the Company to acquire any particular amount of common stock or adopt any particular method of repurchase basic and diluted net income per share at the time of the transaction. During the nine months ended September 30, 2019 , the Company did no t repurchase any shares of its common stock. Preferred Stock The Company was authorized to issue 25,000,000 shares of preferred stock. There were no issued or outstanding shares of preferred stock as of September 30, 2019 or December 31, 2018

Earnings Per Share Attributable

Earnings Per Share Attributable to Common Stockholders	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Share Attributable to Common Stockholders	12. 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 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 using the treasury stock method. The following table presents the calculation of basic and diluted net income per share attributable to common stockholders for the three and nine months ended September 30, 2019 and 2018 Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 (in thousands, except per share data) Basic earnings per share: Net income attributable to common stockholders (numerator) $ 1,010 $ 22,745 $ 9,152 $ 83,631 Shares used in computation (denominator) Weighted-average common shares outstanding 91,349 90,494 91,159 89,027 Basic earnings per share $ 0.01 $ 0.25 $ 0.10 $ 0.94 Diluted earnings per share: Net income attributable to common stockholders (numerator) $ 1,010 $ 22,745 $ 9,152 $ 83,631 Shares used in computation (denominator) Weighted-average common shares outstanding 91,349 90,494 91,159 89,027 Effect of dilutive securities: Stock options 1,172 1,704 1,222 1,649 Restricted stock units 326 1,480 469 1,415 Weighted-average diluted shares 92,847 93,678 92,850 92,091 Diluted earnings per share $ 0.01 $ 0.24 $ 0.10 $ 0.91 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 three and nine months ended September 30, 2019 and 2018 were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 (in thousands) Anti-dilutive shares underlying stock-based awards: Stock options 836 252 834 252 Restricted stock units 1,993 85 684 85

Fair Value Measurement

Fair Value Measurement	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurement	13. 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 bonds, certain money market funds and Senior Notes 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. The fair value of the Company’s outstanding borrowings under the Credit Agreement as of December 31, 2018 was classified as Level 3 within the fair value hierarchy because it was valued using an income approach, which utilized a discounted cash flow technique that considered the credit profile of the Company. Accounts receivable, restaurant food liability and accounts payable approximate fair value due to their generally short-term maturities. The following table presents the fair value, for disclosure purposes only, and carrying value of the Company’s assets and liabilities that are recorded at other than fair value as of September 30, 2019 and December 31, 2018 September 30, 2019 December 31, 2018 Level 2 Carrying Value Level 2 Level 3 Carrying Value (in thousands) Assets Money market funds $ 9,472 $ 9,472 $ 61 $ — $ 61 Commercial paper 55,313 55,532 25,322 — 25,431 Corporate bonds 2,808 2,806 1,620 — 1,620 Total assets $ 67,593 $ 67,810 $ 27,003 $ — $ 27,112 Liabilities Long-term debt, including current maturities $ 509,500 $ 500,000 $ — $ 342,745 $ 342,312 Total liabilities $ 509,500 $ 500,000 $ — $ 342,745 $ 342,312 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

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation	Basis of Presentation and Principles of Consolidation The accompanying unaudited condensed consolidated interim financial statements include the accounts of Grubhub Inc. and have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in accordance with the rules and regulations of the United States Securities and Exchange Commission (the “SEC”). Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. These unaudited condensed consolidated interim financial statements include all wholly-owned subsidiaries and reflect all normal and recurring adjustments, as well as any other than normal adjustments, that are, in the opinion of management, necessary for a fair presentation of the results for the interim periods and should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2018 filed with the SEC on February 28, 2019 (the “2018 Form 10-K”). All significant intercompany transactions have been eliminated in consolidation. Operating results for the three and nine months ended September 30, 2019 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2019.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in accordance 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. Significant items subject to such estimates, judgments and assumptions include revenue recognition, website and internal-use software development costs, goodwill, recoverability of intangible assets with finite lives and other long-lived assets, stock-based compensation, and income taxes. Actual results could differ from these estimates.
Changes in Accounting Principle	Changes in Accounting Principle See “ Recently Issued Accounting Pronouncements ” below for a description of accounting principle changes adopted during the nine months ended September 30, 2019 related to leases.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update No. 2016-13, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). ASU 2016-13 introduces a new forward-looking approach, based on expected losses, to estimate credit losses on certain types of financial instruments, including trade receivables and held-to-maturity debt securities, which will require entities to incorporate considerations of historical information, current information and reasonable and supportable forecasts. This ASU also expands disclosure requirements. ASU 2016-13 is effective for the Company beginning in the first quarter of 2020 and early adoption is permitted. The guidance will be applied using the modified-retrospective approach. The adoption of ASU 2016-13 is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows. In February 2016, and in subsequent updates, the FASB issued Accounting Standards Codification Topic 842, Leases million and lease liabilities for operating leases of $ 97.7 million but did not result in a cumulative-effect adjustment on retained earnings. The operating lease right-of-use asset includes the impact upon adoption of ASC Topic 842 of the derecognition of lease incentives, deferred rent, below-market lease intangibles, cease-use liabilities and prepaid rent balances recognized in prepaid expenses and other current assets and current and noncurrent other accruals on the consolidated balance sheets as of December 31, 2018. The adoption of ASC Topic 842 did not have and is not expected to have a material impact to the Company's consolidated results of operations or cash flows. See Note 7, Commitments and Contingencies , for additional details.
Leases	The Company determines if an arrangement is a lease at inception of a contract. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Non-lease components associated with lease components in the Company’s lease contracts are treated as a single lease component. As of September 30, 2019

Acquisitions (Tables)

Acquisitions (Tables) - Tapingo and LevelUp	9 Months Ended
	Sep. 30, 2019
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 Tapingo and LevelUp acquisitions: Tapingo LevelUp Total (in thousands) Accounts receivable $ 3,101 $ 6,201 $ 9,302 Prepaid expenses and other current assets 843 1,396 2,239 Property and equipment — 895 895 Other assets 163 — 163 Restaurant relationships 11,279 10,217 21,496 Diner acquisition — 3,912 3,912 Below-market lease intangible — 2,205 2,205 Developed technology 9,755 20,107 29,862 Goodwill 121,908 296,198 418,106 Net deferred tax asset 9,582 31,545 41,127 Accounts payable and accrued expenses (4,573 ) (3,249 ) (7,822 ) Total purchase price net of cash acquired $ 152,058 $ 369,427 $ 521,485 Fair value of assumed ISOs attributable to pre-combination service (372 ) (2,594 ) (2,966 ) Net cash paid $ 151,686 $ 366,833 $ 518,519
Valuation Methods for Intangible Assets Acquired	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 restaurant relationships, diner acquisition and developed technology as follows: Valuation Method Tapingo LevelUp Restaurant relationships Multi-period excess earnings With or without comparative business valuation Diner acquisition n/a Cost to recreate Developed technology Cost to recreate Multi-period excess earnings
Pro Forma Summary of Operation	The following unaudited pro forma information presents a summary of the operating results of the Company for the three and nine months ended September 30, 2018 as if the acquisitions of Tapingo and LevelUp had occurred as of January 1 of the year prior to acquisition: Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 (in thousands, except per share data) Revenues $ 257,972 $ 752,324 Net income 18,090 60,826 Net income per share attributable to common shareholders: Basic $ 0.20 $ 0.68 Diluted $ 0.19 $ 0.66
Pro Forma Adjustments	The pro forma adjustments that reflect the amortization that would have been recognized for intangible assets, elimination of transaction costs incurred, stock-based compensation expense for assumed equity awards and interest expense for transaction financings, as well as the pro forma tax impact of such adjustments for the three and nine months ended September 30, 2018 were as follows: Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 (in thousands) Depreciation and amortization $ 1,337 $ 4,403 Transaction costs (2,645 ) (5,010 ) Stock-based compensation (41 ) 3,581 Interest expense 432 1,441 Income tax (benefit) expense 272 (1,306 )

Marketable Securities (Tables)

Marketable Securities (Tables)	9 Months Ended
	Sep. 30, 2019
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 September 30, 2019 and December 31, 2018 were as follows: September 30, 2019 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value (in thousands) Cash and cash equivalents Commercial paper $ 26,124 $ — $ (67 ) $ 26,057 Short-term investments Commercial paper 29,408 — (152 ) 29,256 Corporate bonds 2,806 2 — 2,808 Total $ 58,338 $ 2 $ (219 ) $ 58,121 December 31, 2018 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value (in thousands) Cash and cash equivalents Commercial paper $ 12,097 $ — $ (21 ) $ 12,076 Corporate bonds 870 — — 870 Short-term investments Commercial paper 13,334 — (88 ) 13,246 Corporate bonds 750 — — 750 Total $ 27,051 $ — $ (109 ) $ 26,942
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 September 30, 2019 and December 31, 2018 were as follows: September 30, 2019 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 $ 55,313 $ (219 ) $ — $ — $ 55,313 $ (219 ) Total $ 55,313 $ (219 ) $ — $ — $ 55,313 $ (219 ) December 31, 2018 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 $ 25,322 $ (109 ) $ — $ — $ 25,322 $ (109 ) Corporate bonds 750 — — — 750 — Total $ 26,072 $ (109 ) $ — $ — $ 26,072 $ (109 )

Goodwill and Acquired Intangi_2

Goodwill and Acquired Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Components of Acquired Intangible Assets (Infinite Lived)	The components of acquired intangible assets as of September 30, 2019 and December 31, 2018 were as follows: September 30, 2019 December 31, 2018 Gross Carrying Amount Accumulated Amortization Net Value Gross Amount Accumulated Amortization Net Value (in thousands) Restaurant relationships $ 497,788 $ (126,661 ) $ 371,127 $ 494,278 $ (103,457 ) $ 390,821 Diner acquisition 48,293 (17,494 ) 30,799 47,541 (10,306 ) 37,235 Developed technology 35,826 (13,859 ) 21,967 38,385 (10,247 ) 28,138 Other 2,918 (2,639 ) 279 3,676 (2,615 ) 1,061 Trademarks — — — 2,225 (2,225 ) — Below-market lease intangible — — — 2,206 (124 ) 2,082 Total amortizable intangible assets 584,825 (160,653 ) 424,172 588,311 (128,974 ) 459,337 Indefinite-lived trademarks 89,676 — 89,676 89,676 — 89,676 Total acquired intangible assets $ 674,501 $ (160,653 ) $ 513,848 $ 677,987 $ (128,974 ) $ 549,013
Components of Acquired Intangible Assets (Finite Lived)	The components of acquired intangible assets as of September 30, 2019 and December 31, 2018 were as follows: September 30, 2019 December 31, 2018 Gross Carrying Amount Accumulated Amortization Net Value Gross Amount Accumulated Amortization Net Value (in thousands) Restaurant relationships $ 497,788 $ (126,661 ) $ 371,127 $ 494,278 $ (103,457 ) $ 390,821 Diner acquisition 48,293 (17,494 ) 30,799 47,541 (10,306 ) 37,235 Developed technology 35,826 (13,859 ) 21,967 38,385 (10,247 ) 28,138 Other 2,918 (2,639 ) 279 3,676 (2,615 ) 1,061 Trademarks — — — 2,225 (2,225 ) — Below-market lease intangible — — — 2,206 (124 ) 2,082 Total amortizable intangible assets 584,825 (160,653 ) 424,172 588,311 (128,974 ) 459,337 Indefinite-lived trademarks 89,676 — 89,676 89,676 — 89,676 Total acquired intangible assets $ 674,501 $ (160,653 ) $ 513,848 $ 677,987 $ (128,974 ) $ 549,013
Changes in Carrying Amount of Goodwill	The change in the carrying amount of goodwill during the nine months ended September 30, 2019, which was primarily related to changes in the fair value of net deferred tax assets for the purchase price allocations of the Tapingo and LevelUp acquisitions during the measurement period, was as follows: Goodwill Accumulated Impairment Losses Net Book Value (in thousands) Balance as of December 31, 2018 $ 1,019,239 $ — $ 1,019,239 Acquisitions - measurement period adjustments (11,271 ) — (11,271 ) Balance as of September 30, 2019 $ 1,007,968 $ — $ 1,007,968
Estimated Future Amortization of Acquired Intangible Assets	Estimated future amortization expense of acquired intangible assets as of September 30, 2019 was as follows: (in thousands) The remainder of 2019 $ 13,367 2020 45,645 2021 38,812 2022 36,843 2023 30,348 Thereafter 259,157 Total $ 424,172

Property and Equipment (Tables)

Property and Equipment (Tables)	9 Months Ended
	Sep. 30, 2019
Property Plant And Equipment [Abstract]
Components of Property and Equipment	The components of the Company’s property and equipment as of September 30, 2019 and December 31, 2018 were as follows: September 30, 2019 December 31, 2018 (in thousands) Developed software $ 136,904 $ 90,302 Computer equipment 68,351 50,767 Leasehold improvements 53,119 39,550 Furniture and fixtures 14,361 10,801 Purchased software and digital assets 11,100 4,696 Construction in progress 214 1,976 Property and equipment 284,049 198,092 Accumulated depreciation and amortization (123,681 ) (78,597 ) Property and equipment, net $ 160,368 $ 119,495

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2019
Commitments And Contingencies Disclosure [Abstract]
Components of Lease Costs	The components of lease costs, which consist of rent expense for leased office space, during the three and nine months ended September 30, 2019 Three Months Ended September 30, 2019 Nine Months Ended September 30, 2019 (in thousands) Fixed operating lease cost $ 4,591 $ 12,344 Short-term lease cost 531 1,384 Sublease income (318 ) (490 ) Total lease cost $ 4,804 $ 13,238
Supplemental Cash Flow Information Related to Operating Leases Average Lease Terms and Discount Rates	Supplemental cash flow information related to the Company’s operating leases as well as the weighted-average lease term and discount rate as of September 30, 2019 Nine Months Ended September 30, 2019 Cash paid for operating lease liabilities (in thousands) $ 10,298 Operating lease assets obtained in exchange for new operating lease obligations (in thousands) $ 28,109 Weighted-average remaining lease term (years) 9.1 Weighted-average discount rate 5.0 %
Summary of Future Operating Lease Payments	Future lease payments under the Company’s operating lease agreements as of September 30, 2019 (in thousands) The remainder of 2019 $ 3,383 2020 10,302 2021 18,522 2022 16,530 2023 16,605 Thereafter 87,496 Total future lease payments $ 152,838 Less interest (33,228 ) Present value of lease liabilities $ 119,610
Summary of Future Minimum Payments under Non cancelable Operating Lease	As previously reported in the 2018 Form 10-K under ASC Topic 840, future minimum lease payments under the Company’s operating lease agreements that had initial or remaining non-cancelable lease terms in excess of one year as of December 31, 2018 were as follows: (in thousands) 2019 $ 13,009 2020 14,874 2021 14,243 2022 12,219 2023 12,220 Thereafter 57,503 Total $ 124,068

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Schedule of Debt	The following table summarizes the carrying value of the Company’s debt as of September 30, 2019 and December 31, 2018: September 30, 2019 December 31, 2018 (in thousands) Senior Notes $ 500,000 $ — Term loan — 120,312 Revolving loan — 222,000 Total debt $ 500,000 $ 342,312 Less current portion — (6,250 ) Less unamortized deferred debt issuance costs (7,224 ) (514 ) Long-term debt $ 492,776 $ 335,548

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2019
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 nine months ended September 30, 2019 and 2018 were as follows: Nine Months Ended September 30, 2019 2018 Weighted-average fair value options granted $ 30.91 $ 65.86 Average risk-free interest rate 2.42 % 2.55 % Expected stock price volatility 48.3 % 46.1 % Dividend yield None None Expected stock option life (years) 4.00 3.64 (a) (a) The expected term for the LevelUp assumed ISO awards was calculated based on their respective remaining vesting periods as of the acquisition date.
Summary of Stock Option Activity	Stock option awards as of December 31, 2018 and September 30, 2019, and changes during the ended , were as follows Options Weighted-Average Exercise Price Aggregate Intrinsic Value (thousands) Weighted-Average Exercise Term (years) Outstanding at December 31, 2018 2,650,839 $ 33.13 $ 120,977 6.87 Granted 333,929 76.98 Forfeited (29,654 ) 83.93 Exercised (183,383 ) 22.03 Outstanding at September 30, 2019 2,771,731 38.60 67,225 6.52 Vested and expected to vest at September 30, 2019 2,770,154 38.58 67,225 6.52 Exercisable at September 30, 2019 1,892,474 $ 27.88 $ 58,314 5.69
Non-vested Restricted Stock Units	Non-vested restricted stock units as of December 31, 2018 September 30, 2019 nine months September 30, 2019 Restricted Stock Units Shares Weighted-Average Grant Date Fair Value Outstanding at December 31, 2018 2,328,857 $ 67.33 Granted 1,990,613 74.54 Forfeited (468,204 ) 69.45 Vested (751,528 ) 60.52 Cancelled (52,357 ) 85.39 Outstanding at September 30, 2019 3,047,381 $ 73.36

Earnings Per Share Attributab_2

Earnings Per Share Attributable to Common Stockholders (Tables)	9 Months Ended
	Sep. 30, 2019
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 three and nine months ended September 30, 2019 and 2018 Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 (in thousands, except per share data) Basic earnings per share: Net income attributable to common stockholders (numerator) $ 1,010 $ 22,745 $ 9,152 $ 83,631 Shares used in computation (denominator) Weighted-average common shares outstanding 91,349 90,494 91,159 89,027 Basic earnings per share $ 0.01 $ 0.25 $ 0.10 $ 0.94 Diluted earnings per share: Net income attributable to common stockholders (numerator) $ 1,010 $ 22,745 $ 9,152 $ 83,631 Shares used in computation (denominator) Weighted-average common shares outstanding 91,349 90,494 91,159 89,027 Effect of dilutive securities: Stock options 1,172 1,704 1,222 1,649 Restricted stock units 326 1,480 469 1,415 Weighted-average diluted shares 92,847 93,678 92,850 92,091 Diluted earnings per share $ 0.01 $ 0.24 $ 0.10 $ 0.91
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 three and nine months ended September 30, 2019 and 2018 were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2019 2018 2019 2018 (in thousands) Anti-dilutive shares underlying stock-based awards: Stock options 836 252 834 252 Restricted stock units 1,993 85 684 85

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Schedule of Fair Value and Carrying Value of Assets and Liabilities Recorded at Other Than Fair Value	The following table presents the fair value, for disclosure purposes only, and carrying value of the Company’s assets and liabilities that are recorded at other than fair value as of September 30, 2019 and December 31, 2018 September 30, 2019 December 31, 2018 Level 2 Carrying Value Level 2 Level 3 Carrying Value (in thousands) Assets Money market funds $ 9,472 $ 9,472 $ 61 $ — $ 61 Commercial paper 55,313 55,532 25,322 — 25,431 Corporate bonds 2,808 2,806 1,620 — 1,620 Total assets $ 67,593 $ 67,810 $ 27,003 $ — $ 27,112 Liabilities Long-term debt, including current maturities $ 509,500 $ 500,000 $ — $ 342,745 $ 342,312 Total liabilities $ 509,500 $ 500,000 $ — $ 342,745 $ 342,312

Significant Accounting Polici_3

Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Accounting Policies [Abstract]
Operating leases, right of use assets	$ 100,736	$ 81,200
Operating leases, liabilities	$ 119,610	$ 97,700

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands	Nov. 07, 2018	Sep. 13, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Net cash payments to acquire businesses					$ (127)	$ 366,856
Fair value of assumed ISOs attributable to pre-combination service				$ 2,594		2,594
Goodwill			$ 1,007,968		1,007,968		$ 1,019,239
General and administrative expenses
Business Acquisition [Line Items]
Direct and indirect expense incurred related to acquisitions			$ 1,200	$ 2,600	$ 2,000	$ 5,100
Tapingo
Business Acquisition [Line Items]
Acquisition date	Nov. 7, 2018
Total purchase price net of cash acquired	$ 152,058
Net cash payments to acquire businesses	151,686
Cash acquired in business acquisition	1,500
Goodwill	121,908
Tapingo | ISO
Business Acquisition [Line Items]
Fair value of assumed ISOs attributable to pre-combination service	372
LevelUp
Business Acquisition [Line Items]
Acquisition date		Sep. 13, 2018
Total purchase price net of cash acquired		$ 369,427
Net cash payments to acquire businesses		366,833
Cash acquired in business acquisition		6,000
Goodwill		296,198
LevelUp | ISO
Business Acquisition [Line Items]
Fair value of assumed ISOs attributable to pre-combination service		$ 2,594
Tapingo and LevelUp
Business Acquisition [Line Items]
Total purchase price net of cash acquired	521,485
Net cash payments to acquire businesses	518,519
Goodwill	418,106
Tapingo and LevelUp | ISO
Business Acquisition [Line Items]
Fair value of assumed ISOs attributable to pre-combination service	2,966
Post combination expense expected to be recognized related to replacement awards	$ 21,400

Schedule of Acquisition-Date Fa

Schedule of Acquisition-Date Fair Value of Assets and Liabilities (Detail) - USD ($) $ in Thousands	Nov. 07, 2018	Sep. 13, 2018	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill				$ 1,007,968		$ 1,019,239
Fair value of assumed ISOs attributable to pre-combination service			$ (2,594)		$ (2,594)
Net cash paid				(127)	$ 366,856
Tapingo
Business Acquisition [Line Items]
Accounts receivable	$ 3,101
Prepaid expenses and other current assets	843
Other assets	163
Goodwill	121,908
Net deferred tax asset	9,582
Accounts payable and accrued expenses	(4,573)
Total purchase price net of cash acquired	152,058
Net cash paid	151,686
Tapingo | ISO
Business Acquisition [Line Items]
Fair value of assumed ISOs attributable to pre-combination service	(372)
LevelUp
Business Acquisition [Line Items]
Accounts receivable		$ 6,201
Prepaid expenses and other current assets		1,396
Property and equipment		895
Goodwill		296,198
Net deferred tax asset		31,545
Accounts payable and accrued expenses		(3,249)
Total purchase price net of cash acquired		369,427
Net cash paid		366,833
LevelUp | ISO
Business Acquisition [Line Items]
Fair value of assumed ISOs attributable to pre-combination service		(2,594)
Tapingo and LevelUp
Business Acquisition [Line Items]
Accounts receivable	9,302
Prepaid expenses and other current assets	2,239
Property and equipment	895
Other assets	163
Goodwill	418,106
Net deferred tax asset	41,127
Accounts payable and accrued expenses	(7,822)
Total purchase price net of cash acquired	521,485
Net cash paid	518,519
Tapingo and LevelUp | ISO
Business Acquisition [Line Items]
Fair value of assumed ISOs attributable to pre-combination service	(2,966)
Restaurant relationships
Business Acquisition [Line Items]
Intangible assets				3,500
Restaurant relationships | Tapingo
Business Acquisition [Line Items]
Intangible assets	11,279
Restaurant relationships | LevelUp
Business Acquisition [Line Items]
Intangible assets		10,217
Restaurant relationships | Tapingo and LevelUp
Business Acquisition [Line Items]
Intangible assets	21,496
Diner acquisition
Business Acquisition [Line Items]
Intangible assets				$ 800
Diner acquisition | LevelUp
Business Acquisition [Line Items]
Intangible assets		3,912
Diner acquisition | Tapingo and LevelUp
Business Acquisition [Line Items]
Intangible assets	3,912
Below-market lease intangible | LevelUp
Business Acquisition [Line Items]
Intangible assets		2,205
Below-market lease intangible | Tapingo and LevelUp
Business Acquisition [Line Items]
Intangible assets	2,205
Developed technology | Tapingo
Business Acquisition [Line Items]
Intangible assets	9,755
Developed technology | LevelUp
Business Acquisition [Line Items]
Intangible assets		$ 20,107
Developed technology | Tapingo and LevelUp
Business Acquisition [Line Items]
Intangible assets	$ 29,862

Acquisitions - Valuation Method

Acquisitions - Valuation Methods for Intangible Assets Acquired (Detail)	9 Months Ended
	Sep. 30, 2019
Restaurant relationships | Tapingo
Business Acquisition [Line Items]
Valuation Method	Multi-period excess earnings
Restaurant relationships | LevelUp
Business Acquisition [Line Items]
Valuation Method	With or without comparative business valuation
Diner acquisition | Tapingo
Business Acquisition [Line Items]
Valuation Method	n/a
Diner acquisition | LevelUp
Business Acquisition [Line Items]
Valuation Method	Cost to recreate
Developed technology | Tapingo
Business Acquisition [Line Items]
Valuation Method	Cost to recreate
Developed technology | LevelUp
Business Acquisition [Line Items]
Valuation Method	Multi-period excess earnings

Pro forma Summary of Operation

Pro forma Summary of Operation (Detail) - Tapingo and LevelUp - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Business Acquisition [Line Items]
Revenues	$ 257,972	$ 752,324
Net income	$ 18,090	$ 60,826
Net income per share attributable to common shareholders:
Basic	$ 0.20	$ 0.68
Diluted	$ 0.19	$ 0.66

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	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Interest expense	$ 7,300	$ 1,700	$ 17,000	$ 4,600
Income tax (benefit) expense	$ (3,447)	(1,234)	$ (4,911)	2,721
Tapingo and LevelUp | Pro Forma
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Depreciation and amortization		1,337		4,403
Transaction costs		(2,645)		(5,010)
Stock-based compensation		(41)		3,581
Interest expense		432		1,441
Income tax (benefit) expense		$ 272		$ (1,306)

Summary of Held-to-Maturity Mar

Summary of Held-to-Maturity Marketable Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule Of Held To Maturity Securities [Line Items]
Amortized Cost	$ 58,338	$ 27,051
Unrealized Gains	2
Unrealized Losses	(219)	(109)
Estimated Fair Value	58,121	26,942
Commercial Paper | Cash and Cash Equivalents
Schedule Of Held To Maturity Securities [Line Items]
Amortized Cost	26,124	12,097
Unrealized Losses	(67)	(21)
Estimated Fair Value	26,057	12,076
Commercial Paper | Short Term Investments
Schedule Of Held To Maturity Securities [Line Items]
Amortized Cost	29,408	13,334
Unrealized Losses	(152)	(88)
Estimated Fair Value	29,256	13,246
Corporate Bonds | Cash and Cash Equivalents
Schedule Of Held To Maturity Securities [Line Items]
Amortized Cost		870
Estimated Fair Value		870
Corporate Bonds | Short Term Investments
Schedule Of Held To Maturity Securities [Line Items]
Amortized Cost	2,806	750
Unrealized Gains	2
Estimated Fair Value	$ 2,808	$ 750

Summary of Continuous Unrealize

Summary of Continuous Unrealized Loss on Marketable Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule Of Held To Maturity Securities [Line Items]
Estimated Fair Value, Less Than 12 Months	$ 55,313	$ 26,072
Unrealized Loss, Less Than 12 Months	(219)	(109)
Estimated Fair Value, 12 Months or Greater	0	0
Unrealized Loss, 12 Months or Greater	0	0
Estimated Fair Value, Total	55,313	26,072
Unrealized Loss, Total	(219)	(109)
Commercial Paper
Schedule Of Held To Maturity Securities [Line Items]
Estimated Fair Value, Less Than 12 Months	55,313	25,322
Unrealized Loss, Less Than 12 Months	(219)	(109)
Estimated Fair Value, 12 Months or Greater	0	0
Unrealized Loss, 12 Months or Greater	0	0
Estimated Fair Value, Total	55,313	25,322
Unrealized Loss, Total	$ (219)	(109)
Corporate Bonds
Schedule Of Held To Maturity Securities [Line Items]
Estimated Fair Value, Less Than 12 Months		750
Unrealized Loss, Less Than 12 Months		0
Estimated Fair Value, 12 Months or Greater		0
Unrealized Loss, 12 Months or Greater		0
Estimated Fair Value, Total		750
Unrealized Loss, Total		$ 0

Marketable Securities - Additio

Marketable Securities - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Schedule Of Held To Maturity Securities [Line Items]
Other-than-temporary impairment losses related to marketable securities	$ 0	$ 0	$ 0	$ 0
Net Interest (Income) Expense
Schedule Of Held To Maturity Securities [Line Items]
Interest income	$ 1,300,000	$ 1,300,000	$ 2,700,000	$ 3,200,000

Components of Acquired Intangib

Components of Acquired Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Total acquired intangible assets, Gross Carrying Amount	$ 674,501	$ 677,987
Amortizable intangible assets, Accumulated Amortization	(160,653)	(128,974)
Total acquired intangible assets, Net Carrying Value	513,848	549,013
Amortizable intangible assets, Gross Carrying Amount	584,825	588,311
Amortizable intangible assets, Net Carrying Value	424,172	459,337
Indefinite-lived trademarks	89,676	89,676
Restaurant relationships
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Accumulated Amortization	(126,661)	(103,457)
Amortizable intangible assets, Gross Carrying Amount	497,788	494,278
Amortizable intangible assets, Net Carrying Value	371,127	390,821
Diner acquisition
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Accumulated Amortization	(17,494)	(10,306)
Amortizable intangible assets, Gross Carrying Amount	48,293	47,541
Amortizable intangible assets, Net Carrying Value	30,799	37,235
Developed technology
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Accumulated Amortization	(13,859)	(10,247)
Amortizable intangible assets, Gross Carrying Amount	35,826	38,385
Amortizable intangible assets, Net Carrying Value	21,967	28,138
Other
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Accumulated Amortization	(2,639)	(2,615)
Amortizable intangible assets, Gross Carrying Amount	2,918	3,676
Amortizable intangible assets, Net Carrying Value	$ 279	1,061
Trademarks
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Accumulated Amortization		(2,225)
Amortizable intangible assets, Gross Carrying Amount		2,225
Below-market lease intangible
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Amortizable intangible assets, Accumulated Amortization		(124)
Amortizable intangible assets, Gross Carrying Amount		2,206
Amortizable intangible assets, Net Carrying Value		$ 2,082

Goodwill and Acquired Intangi_3

Goodwill and Acquired Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]
Gross carrying amount of intangible assets	$ 584,825		$ 584,825		$ 588,311
Accumulated amortization of intangible assets	160,653		160,653		128,974
Intangible assets amortization expense	13,500	$ 10,000	37,300	$ 31,100
Restaurant Relationships
Finite Lived Intangible Assets [Line Items]
Acquired intangible assets	3,500		3,500
Gross carrying amount of intangible assets	497,788		497,788		494,278
Accumulated amortization of intangible assets	126,661		126,661		103,457
Diner Acquisition
Finite Lived Intangible Assets [Line Items]
Acquired intangible assets	800		800
Gross carrying amount of intangible assets	48,293		48,293		47,541
Accumulated amortization of intangible assets	17,494		17,494		$ 10,306
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations | Trademarks, Developed Technology and Other
Finite Lived Intangible Assets [Line Items]
Gross carrying amount of intangible assets	5,500		5,500
Accumulated amortization of intangible assets	$ 5,400		$ 5,400

Schedule of Carrying Amount of

Schedule of Carrying Amount of Goodwill (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill, Beginning Balance	$ 1,019,239
Acquisitions - measurement period adjustments	(11,271)
Goodwill, Ending Balance	1,007,968
Net Book Value, Beginning Balance	1,019,239
Acquisitions - measurement period adjustments	(11,271)
Net Book Value, Ending Balance	$ 1,007,968

Estimated Future Amortization o

Estimated Future Amortization of Acquired Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
The remainder of 2019	$ 13,367
2020	45,645
2021	38,812
2022	36,843
2023	30,348
Thereafter	259,157
Amortizable intangible assets, Net Carrying Value	$ 424,172	$ 459,337

Components of Property and Equi

Components of Property and Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Property Plant And Equipment [Line Items]
Property and equipment	$ 284,049	$ 198,092
Accumulated depreciation and amortization	(123,681)	(78,597)
Property and equipment, net	160,368	119,495
Developed software
Property Plant And Equipment [Line Items]
Property and equipment	136,904	90,302
Computer equipment
Property Plant And Equipment [Line Items]
Property and equipment	68,351	50,767
Leasehold improvements
Property Plant And Equipment [Line Items]
Property and equipment	53,119	39,550
Furniture and fixtures
Property Plant And Equipment [Line Items]
Property and equipment	14,361	10,801
Purchased Software and Digital Assets
Property Plant And Equipment [Line Items]
Property and equipment	11,100	4,696
Construction in progress
Property Plant And Equipment [Line Items]
Property and equipment	$ 214	$ 1,976

Property and Equipment - Additi

Property and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Property Plant And Equipment [Line Items]
Depreciation and amortization	$ 30,649	$ 20,987	$ 82,961	$ 61,787
Capitalized developed software costs	16,500	10,800	46,800	28,100
Property And Equipment Excluding Developed Software
Property Plant And Equipment [Line Items]
Depreciation and amortization	8,100	5,700	21,700	16,200
Developed software
Property Plant And Equipment [Line Items]
Depreciation and amortization	$ 9,100	$ 5,300	$ 24,000	$ 14,500

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Jan. 01, 2019
Commitments And Contingencies Disclosure [Abstract]
Description of operating lease agreements	As of September 30, 2019, the Company had operating lease agreements for its office facilities in various locations throughout the U.S, as well as in the U.K. and Israel, which expire at various dates through May 2030.
Lease renewal period	5 years
Lessee, operating lease, existence of option to extend [true false]	true
Lessee, operating lease, existence of option to terminate [true false]	true
Operating lease right-of-use assets	$ 100,736	$ 81,200
Operating lease liabilities current	8,056
Operating lease liabilities non current	$ 111,554

Components of Lease Costs (Deta

Components of Lease Costs (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Lessee Operating Lease Description [Abstract]
Fixed operating lease cost	$ 4,591	$ 12,344
Short-term lease cost	531	1,384
Sublease income	(318)	(490)
Total lease cost	$ 4,804	$ 13,238

Supplemental Cash Flow Informat

Supplemental Cash Flow Information Related to Operating Leases Average Lease Terms and Discount Rates (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)
Lessee Operating Lease Description [Abstract]
Cash paid for operating lease liabilities (in thousands)	$ 10,298
Operating lease assets obtained in exchange for new operating lease obligations (in thousands)	$ 28,109
Weighted-average remaining lease term (years)	9 years 1 month 6 days
Weighted-average discount rate	5.00%

Summary of Future Operating Lea

Summary of Future Operating Lease Payments (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Lessee Operating Lease Description [Abstract]
The remainder of 2019	$ 3,383
2020	10,302
2021	18,522
2022	16,530
2023	16,605
Thereafter	87,496
Total future lease payments	152,838
Less interest	(33,228)
Present value of lease liabilities	$ 119,610	$ 97,700

Summary of Future Minimum Payme

Summary of Future Minimum Payments under Non cancelable Operating Lease (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019	$ 13,009
2020	14,874
2021	14,243
2022	12,219
2023	12,220
Thereafter	57,503
Total	$ 124,068

Commitments and Contingencies_2

Commitments and Contingencies - Additional Information (Detail1) $ in Millions	Sep. 30, 2019USD ($)
Maximum | Merger Income Tax Consequences
Loss Contingencies [Line Items]
Indemnification related to business combination	$ 15

Schedule of Debt (Detail)

Schedule of Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total debt	$ 500,000	$ 342,312
Less current portion		(6,250)
Less unamortized deferred debt issuance costs	(7,224)	(514)
Long-term debt	492,776	335,548
Senior Notes
Debt Instrument [Line Items]
Total debt	$ 500,000
Term loan
Debt Instrument [Line Items]
Total debt		120,312
Revolving loan
Debt Instrument [Line Items]
Total debt		$ 222,000

Debt - Additional Information (

Debt - Additional Information (Detail) - USD ($)	Jun. 10, 2019	Feb. 06, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Debt Instrument [Line Items]
Repayment of outstanding term and revolving loan borrowings					$ 342,313,000	$ 52,344,000
Long-term debt			$ 500,000,000		500,000,000		$ 342,312,000
Debt issuance costs					9,136,000
Unamortized deferred debt issuance costs			7,224,000		7,224,000		514,000
Unamortized debt issuance expense							1,900,000
Interest expense			7,300,000	$ 1,700,000	17,000,000	$ 4,600,000
Write-off of unamortized debt issuance costs upon extinguishment of term loan					1,900,000
Credit Agreement
Debt Instrument [Line Items]
Credit facility, additional borrowing capacity			250,000,000		250,000,000
Credit facility, expiration date		Feb. 5, 2024
Repayment of outstanding term and revolving loan borrowings					342,300,000
Long-term debt			0		$ 0
Prior Credit Facility
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 350,000,000
Credit facility, expiration date		Oct. 9, 2022
Senior notes
Debt Instrument [Line Items]
Debt instrument, redemption, description					The Company has the option to redeem all or a portion of the Senior Notes at any time on or after July 1, 2022 by paying 100.0% of the principal amount of the Senior Notes plus a declining premium, plus accrued and unpaid interest to (but excluding) the redemption date. The premium declines from 2.750% during the twelve months on and after July 1, 2022, to 1.833% during the twelve months on and after July 1, 2023, to 0.917% during the twelve months on and after July 1, 2024, to zero on and after July 1, 2025. The Company may also redeem all or any portion of the Senior Notes at any time prior to July 1, 2022, at a price equal to 100.0% of the aggregate principal amount thereof plus a make-whole premium set forth in the Indenture and accrued and unpaid interest, if any. In addition, before July 1, 2022, the Company may redeem up to 40% of the aggregate principal amount of the Senior Notes with the net proceeds of certain equity offerings at a redemption price of 105.5% of the principal amount plus accrued and unpaid interest, if any, provided that certain conditions are met.
Debt instrument, redemption period, start date	Jul. 1, 2022
Debt instrument, redemption price, percentage	100.00%				100.00%
Long-term debt			500,000,000		$ 500,000,000
Senior notes | Redeemable Senior Notes Before July 1, 2022 Following Equity Offering
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	105.50%
Debt instrument percentage of principal amount may be redeemed					40.00%
Senior notes | Redeemable Senior Notes After July 1, 2022
Debt Instrument [Line Items]
Debt instrument, redemption period, start date					Jul. 1, 2022
Debt instrument, redemption price, percentage					2.75%
Senior notes | Redeemable Senior Notes After July 1, 2023
Debt Instrument [Line Items]
Debt instrument, redemption period, start date					Jul. 1, 2023
Debt instrument, redemption price, percentage					1.833%
Senior notes | Redeemable Senior Notes After July 1, 2024
Debt Instrument [Line Items]
Debt instrument, redemption period, start date					Jul. 1, 2024
Debt instrument, redemption price, percentage					0.917%
Senior notes | Redeemable Senior Notes After July 1, 2025
Debt Instrument [Line Items]
Debt instrument, redemption period, start date					Jul. 1, 2025
Debt instrument, redemption price, percentage					0.00%
Senior notes | Change of Control Event
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage					101.00%
Senior notes | Grubhub Holdings Inc.
Debt Instrument [Line Items]
Long-term debt	$ 500,000,000
Debt instrument, interest rate	5.50%
Debt instrument, payment terms					Interest is payable on the Senior Notes semi-annually on January and July of each year, beginning on January 1, 2020
Debt instrument, maturity date	Jul. 1, 2027
Net proceeds from sale of notes receivable	$ 494,400,000
Term Loans | Credit Agreement
Debt Instrument [Line Items]
Prepay and extinguish of existing credit facility	323,000,000
Revolving Loans
Debt Instrument [Line Items]
Long-term debt							$ 222,000,000
Revolving Loans | Credit Agreement
Debt Instrument [Line Items]
Payment of outstanding revolving loan under existing credit facility	17,300,000
Credit facility, maximum borrowing capacity		$ 225,000,000	225,000,000		$ 225,000,000
Unamortized debt issuance expense			$ 1,200,000		$ 1,200,000
Term Loans | Credit Agreement
Debt Instrument [Line Items]
Long-term debt		$ 325,000,000
Debt extinguishment amount	$ 325,000,000

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	May 31, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation		$ 18,300	$ 14,200	$ 54,806	$ 36,445
Total unrecognized stock-based compensation expense		224,800		$ 224,800
Unrecognized compensation expense recognition period				2 years 10 months 24 days
Stock-based compensation capitalized as website and software development cost		4,100	2,600	$ 11,300	6,300
Options, Granted				333,929
Aggregate intrinsic value of awards exercised		2,300	13,600	$ 9,900	36,100
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation		3,500	4,500	$ 12,600	9,400
Unrecognized compensation expense recognition period				2 years 3 months 18 days
Unrecognized stock-based compensation expense		28,900		$ 28,900
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation		14,800	9,700	$ 42,200	27,000
Unrecognized compensation expense recognition period				3 years
Fair value of awards vested during the period		14,000	26,300	$ 55,200	$ 76,300
Unrecognized compensation expense related to share based awards other than options		$ 195,900		$ 195,900
Non-vested restricted stock units or awards expected to vest		3,021,738		3,021,738
Weighted average grant date fair value		$ 73.37		$ 73.37
LevelUp
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options, Granted					236,414
ASU 2016-09 | Income Tax Expense
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Recognized excess tax benefits from stock-based compensation		$ 400	7,600	$ 3,800	$ 21,500
Excess tax benefits from stock-based compensation		$ 400	$ 7,600	$ 3,800	$ 21,500
2015 Long-Term Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Increase in the aggregate number of shares issued	5,000,000
Shares of common stock authorized		5,770,531		5,770,531
Common stock shares available for issuance		5,770,531		5,770,531
Options, Granted				333,929	347,891

Assumptions Used to Determine F

Assumptions Used to Determine Fair Value of Stock Options Granted (Detail) - $ / shares	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Weighted-average fair value options granted	$ 30.91	$ 65.86
Average risk-free interest rate	2.42%	2.55%
Expected stock price volatility	48.30%	46.10%
Dividend yield	0.00%	0.00%
Expected stock option life (years)	4 years	3 years 7 months 20 days	[1]
[1]	The expected term for the LevelUp assumed ISO awards was calculated based on their respective remaining vesting periods as of the acquisition date.

Stock Option Activity (Detail)

Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Options
Options, Beginning Balance	2,650,839
Options, Granted	333,929
Options, Forfeited	(29,654)
Options, Exercised	(183,383)
Options, Ending Balance	2,771,731	2,650,839
Options, Vested and expected to vest	2,770,154
Options, Exercisable	1,892,474
Weighted-Average Exercise Price
Weighted-Average Exercise Price, Beginning Balance	$ 33.13
Weighted-Average Exercise Price, Granted	76.98
Weighted-Average Exercise Price, Forfeited	83.93
Weighted-Average Exercise Price, Exercised	22.03
Weighted-Average Exercise Price, Ending Balance	38.60	$ 33.13
Weighted-Average Exercise Price, Vested and expected to vest	38.58
Weighted-Average Exercise Price, Exercisable	$ 27.88
Aggregate Intrinsic Value/Weighted-Average Exercise Term
Aggregate Intrinsic Value	$ 67,225	$ 120,977
Aggregate Intrinsic Value, Vested and expected to vest	67,225
Aggregate Intrinsic Value, Exercisable	$ 58,314
Weighted-Average Exercise Term, Outstanding Balance	6 years 6 months 7 days	6 years 10 months 13 days
Weighted-Average Exercise Term, Vested and expected to vest	6 years 6 months 7 days
Weighted-Average Exercise Term, Exercisable	5 years 8 months 8 days

Non-vested Restricted Stock Uni

Non-vested Restricted Stock Units (Detail) - Restricted Stock Units	9 Months Ended
	Sep. 30, 2019$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares, Beginning Balance | shares	2,328,857
Shares, Granted | shares	1,990,613
Shares, Forfeited | shares	(468,204)
Shares, Vested | shares	(751,528)
Shares, Cancelled | shares	(52,357)
Shares, Ending Balance | shares	3,047,381
Weighted-Average Grant Date Fair Value, Beginning Balance | $ / shares	$ 67.33
Weighted-Average Grant Date Fair Value, Granted | $ / shares	74.54
Weighted-Average Grant Date Fair Value, Forfeited | $ / shares	69.45
Weighted-Average Grant Date Fair Value, Vested | $ / shares	60.52
Weighted-Average Grant Date Fair Value, Cancelled | $ / shares	85.39
Weighted-Average Grant Date Fair Value, Ending Balance | $ / shares	$ 73.36

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Effective income tax rate	(141.40%)	(5.70%)	(115.80%)	3.20%
Excess tax benefits from stock-based compensation	$ 0.4	$ 7.6	$ 3.8	$ 21.5

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)	Apr. 25, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Jan. 22, 2016
Class Of Stock [Line Items]
Number of votes per share		one vote per share
Common stock, shares authorized		500,000,000		500,000,000
Common stock, shares issued		91,412,557		90,756,548
Common stock, shares outstanding		91,412,557		90,756,548
Treasury stock, shares		0		0
Aggregate purchase price			$ 200,000,000
Preferred Stock, shares authorized		25,000,000		25,000,000
Preferred Stock, shares issued		0		0
Preferred Stock, shares outstanding		0		0
Common stock
Class Of Stock [Line Items]
Stock Issued and sold			2,820,464
Common stock | Stock Repurchase Program
Class Of Stock [Line Items]
Stock repurchase program, announced date		Jan. 25, 2016
Common stock repurchased, Shares		0
Common stock | Maximum | Stock Repurchase Program
Class Of Stock [Line Items]
Authorized to repurchase of common stock					$ 100,000,000
Investment Agreement | Common stock | Accredited Investor
Class Of Stock [Line Items]
Stock Issued and sold	2,820,464
Aggregate purchase price	$ 200,000,000

Computation of Basic and Dilute

Computation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Basic earnings per share:
Net income attributable to common stockholders (numerator)	$ 1,010	$ 22,745	$ 9,152	$ 83,631
Shares used in computation (denominator)
Weighted-average common shares outstanding	91,349	90,494	91,159	89,027
Basic earnings per share	$ 0.01	$ 0.25	$ 0.10	$ 0.94
Diluted earnings per share:
Net income attributable to common stockholders (numerator)	$ 1,010	$ 22,745	$ 9,152	$ 83,631
Shares used in computation (denominator)
Weighted-average common shares outstanding	91,349	90,494	91,159	89,027
Effect of dilutive securities:
Weighted-average diluted shares	92,847	93,678	92,850	92,091
Diluted earnings per share	$ 0.01	$ 0.24	$ 0.10	$ 0.91
Stock Options
Effect of dilutive securities:
Stock options, Restricted stock units, shares	1,172	1,704	1,222	1,649
Restricted Stock Units
Effect of dilutive securities:
Stock options, Restricted stock units, shares	326	1,480	469	1,415

Anti-dilutive Securities Exclud

Anti-dilutive Securities Excluded from Calculation of Diluted Net Income Per Share (Detail) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Stock Options
Anti-dilutive shares underlying stock-based awards:
Anti-dilutive shares underlying stock-based awards	836	252	834	252
Restricted Stock Units
Anti-dilutive shares underlying stock-based awards:
Anti-dilutive shares underlying stock-based awards	1,993	85	684	85

Schedule of Fair Value and Carr

Schedule of Fair Value and Carrying Value of Assets and Liabilities Recorded at Other Than Fair Value (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value | Level 2
Assets
Assets, fair value disclosure	$ 67,593	$ 27,003
Liabilities
Long-term debt, including current maturities	509,500
Total liabilities	509,500
Fair Value | Level 3
Liabilities
Long-term debt, including current maturities		342,745
Total liabilities		342,745
Carrying Value
Assets
Assets, fair value disclosure	67,810	27,112
Liabilities
Long-term debt, including current maturities	500,000	342,312
Total liabilities	500,000	342,312
Money Market Funds | Fair Value | Level 2
Assets
Assets, fair value disclosure	9,472	61
Money Market Funds | Carrying Value
Assets
Assets, fair value disclosure	9,472	61
Commercial Paper | Fair Value | Level 2
Assets
Assets, fair value disclosure	55,313	25,322
Commercial Paper | Carrying Value
Assets
Assets, fair value disclosure	55,532	25,431
Corporate Bonds | Fair Value | Level 2
Assets
Assets, fair value disclosure	2,808	1,620
Corporate Bonds | Carrying Value
Assets
Assets, fair value disclosure	$ 2,806	$ 1,620