Marcus & Millichap (MMI) 10-Q 9 Aug 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 02, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Trading Symbol	MMI
Entity Registrant Name	Marcus & Millichap, Inc.
Entity Central Index Key	1,578,732
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		38,621,712

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 240,019	$ 220,786
Commissions receivable	6,870	9,586
Prepaid expenses	7,654	9,661
Income tax receivable	0	1,308
Marketable securities, available-for-sale	85,486	73,560
Other assets, net	4,918	5,529
Total current assets	344,947	320,430
Prepaid rent	14,910	15,392
Property and equipment, net	17,159	17,153
Marketable securities, available-for-sale	31,917	52,099
Assets held in rabbi trust	8,890	8,787
Deferred tax assets, net	21,371	22,640
Goodwill and other intangible assets	5,727	0
Other assets	29,250	23,163
Total assets	474,171	459,664
Current liabilities:
Accounts payable and other liabilities	8,279	9,202
Notes payable to former stockholders	1,087	1,035
Deferred compensation and commissions	34,107	49,180
Income tax payable	217	0
Accrued bonuses and other employee related expenses	16,910	23,842
Total current liabilities	60,600	83,259
Deferred compensation and commissions	41,557	49,361
Notes payable to former stockholders	6,564	7,651
Deferred rent and other liabilities	6,553	4,505
Total liabilities	115,274	144,776
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.0001 par value: Authorized shares - 25,000,000; issued and outstanding shares - none at June 30, 2018 and December 31, 2017, respectively	0	0
Common stock, $0.0001 par value: Authorized shares - 150,000,000; issued and outstanding shares - 38,621,712 and 38,374,011 at June 30, 2018 and December 31, 2017, respectively	4	4
Additional paid-in capital	94,291	89,877
Stock notes receivable from employees	(4)	(4)
Retained earnings	264,262	224,071
Accumulated other comprehensive income	344	940
Total stockholders' equity	358,897	314,888
Total liabilities and stockholders' equity	$ 474,171	$ 459,664

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
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	150,000,000	150,000,000
Common stock, shares issued	38,621,712	38,374,011
Common stock, shares outstanding	38,621,712	38,374,011

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF NET AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Revenue	$ 199,402	$ 180,371	$ 373,943	$ 333,583
Operating expenses:
Cost of services	119,869	110,377	221,518	200,024
Selling, general and administrative expense	49,080	43,693	97,133	86,913
Depreciation and amortization expense	1,503	1,303	2,878	2,600
Total operating expenses	170,452	155,373	321,529	289,537
Operating income	28,950	24,998	52,414	44,046
Other income (expense), net	1,724	997	2,933	1,833
Interest expense	(352)	(374)	(712)	(756)
Income before provision for income taxes	30,322	25,621	54,635	45,123
Provision for income taxes	8,155	10,052	14,457	17,554
Net income	22,167	15,569	40,178	27,569
Other comprehensive (loss) income:
Unrealized (losses) gains on marketable securities, net of tax of $(57), $111, $(221) and $176 for the three months ended June 30, 2018 and 2017 and the six months ended June 30, 2018 and 2017, respectively	(164)	174	(656)	221
Foreign currency translation gain (loss), net of tax of $0 for each of the three months ended June 30, 2018 and 2017 and each of the six months ended June 30, 2018 and 2017	34	(23)	73	(25)
Total other comprehensive (loss) income	(130)	151	(583)	196
Comprehensive income	$ 22,037	$ 15,720	$ 39,595	$ 27,765
Earnings per share:
Basic	$ 0.57	$ 0.40	$ 1.03	$ 0.71
Diluted	$ 0.56	$ 0.40	$ 1.02	$ 0.70
Weighted average common shares outstanding:
Basic	39,154	39,002	39,124	38,976
Diluted	39,385	39,132	39,298	39,118
Real Estate Brokerage Commissions [Member]
Revenues:
Revenue	$ 181,640	$ 162,575	$ 344,165	$ 302,712
Financing Fees [Member]
Revenues:
Revenue	15,563	12,709	25,287	22,763
Other Revenues [Member]
Revenues:
Revenue	$ 2,199	$ 5,087	$ 4,491	$ 8,108

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF NET AND COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Unrealized (losses) gains on marketable securities, tax	$ (57)	$ 111	$ (221)	$ 176
Foreign currency translation gain (loss), tax	$ 0	$ 0	$ 0	$ 0

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - 6 months ended Jun. 30, 2018 - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Stock Notes Receivable From Employees [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]
Beginning Balance at Dec. 31, 2017	$ 314,888	$ 0	$ 4	$ 89,877	$ (4)	$ 224,071	$ 940
Beginning Balance, Shares at Dec. 31, 2017		0	38,374,011
Balance as adjusted at Dec. 31, 2017	314,888	$ 0	$ 4	89,877	(4)	224,084	927
Balance as adjusted, Shares at Dec. 31, 2017		0	38,374,011
Net and comprehensive income	39,595	$ 0	$ 0	0	0	40,178	(583)
Stock-based compensation	5,772	$ 0	0	5,772	0	0	0
Stock-based compensation, Shares		0
Shares issued pursuant to employee stock purchase plan	356	$ 0	$ 0	356	0	0	0
Shares issued pursuant to employee stock purchase plan shares		0	13,028
Issuance of common stock for vesting of restricted stock units	0	$ 0	$ 0	0	0	0	0
Issuance of common stock for vesting of restricted stock units, Shares		0	274,740
Issuance of common stock for unvested restricted stock awards	0	$ 0	$ 0	0	0	0	0
Issuance of common stock for unvested restricted stock awards, Shares		0	12,852
Shares withheld related to net share settlement of stock-based awards	(1,714)	$ 0	$ 0	(1,714)	0	0	0
Shares withheld related to net share settlement of stock-based awards, shares		0	(52,919)
Ending Balance at Jun. 30, 2018	358,897	$ 0	$ 4	94,291	(4)	264,262	344
Ending Balance, Shares at Jun. 30, 2018		0	38,621,712
Cumulative effect of a change in accounting principle	$ 0	$ 0	$ 0	$ 0	$ 0	$ 13	$ (13)

CONDENSED CONSOLIDATED STATEME7

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities
Net income	$ 40,178	$ 27,569
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	2,878	2,600
(Recovery) provision for bad debt expense	(29)	(54)
Stock-based compensation	5,772	3,981
Deferred taxes, net	1,489	1,139
Net realized (gains) losses on marketable securities, available-for-sale	(12)	(1)
Other non-cash items	151	37
Changes in operating assets and liabilities:
Commissions receivable	2,861	(44)
Prepaid expenses	2,006	1,144
Prepaid rent	482	(1,803)
Asset held in rabbi trust	0	(700)
Other assets	(3,588)	(10,625)
Accounts payable and other liabilities	(1,525)	(989)
Income tax receivable (payable)	1,525	4,096
Accrued bonuses and other employee related expenses	(6,751)	(7,418)
Deferred compensation and commissions	(23,066)	(19,036)
Deferred rent obligation and other liabilities	675	566
Net cash provided by operating activities	23,046	462
Cash flows from investing activities
Acquisition, net of cash received	(6,216)	0
Purchases of marketable securities, available-for-sale	(57,411)	(25,510)
Proceeds from sales and maturities of marketable securities, available-for-sale	64,969	7,215
Issuances of employee notes receivable	(125)	(344)
Payments received on employee notes receivable	6	6
Proceeds from sale of property and equipment	0	10
Purchase of property and equipment	(2,643)	(3,384)
Net cash used in investing activities	(1,420)	(22,007)
Cash flows from financing activities
Taxes paid related to net share settlement of stock-based awards	(1,714)	(1,402)
Proceeds from issuance of shares pursuant to employee stock purchase plan	356	392
Principal payments on notes payable to former stockholders	(1,035)	(986)
Net cash used in financing activities	(2,393)	(1,996)
Net increase (decrease) in cash and cash equivalents	19,233	(23,541)
Cash and cash equivalents at beginning of period	220,786	187,371
Cash and cash equivalents at end of period	240,019	163,830
Supplemental disclosures of cash flow information
Interest paid during the period	2,005	1,881
Income taxes paid, net	11,443	12,318
Supplemental disclosures of noncash investing and financing activities
Reduction of accrued bonuses and other employee related expenses in settlement of employee notes receivable	192	243
Change in property and equipment included in accounts payable and other liabilities	$ 179	$ (46)

Description of Business and Bas

Description of Business and Basis of Presentation	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Description of Business and Basis of Presentation	1. Description of Business and Basis of Presentation Description of Business Marcus & Millichap, Inc., (the “Company”, “Marcus & Millichap”, or “MMI”), a Delaware corporation, is a brokerage firm specializing in commercial real estate investment sales, financing, research and advisory services. As of June 30, 2018, MMI operates 78 offices in the United States and Canada through its wholly-owned subsidiary, Marcus & Millichap Real Estate Investment Services, Inc. (“MMREIS”), which includes the operations of Marcus & Millichap Capital Corporation (“MMCC”). Reorganization and Initial Public Offering MMI was formed in June 2013 in preparation for Marcus & Millichap Company (“MMC”) to spin-off (“Spin-Off”). Basis of Presentation The financial information presented in the accompanying unaudited condensed consolidated financial statements, has been prepared in accordance with rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for quarterly reports on Form 10-Q Article 10-01 Regulation S-X. 10-K Consolidation The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the related disclosures at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Accounting Policies and Recent

Accounting Policies and Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Accounting Policies and Recent Accounting Pronouncements	2. Accounting Policies and Recent Accounting Pronouncements Accounting Policies The complete list of the Company’s accounting policies is included in the Company’s Annual Report on Form 10-K Revenue Recognition The Company generates real estate brokerage commissions by acting as a broker for real estate owners or investors seeking to buy or sell commercial properties. The Company generates financing fees from securing financing on purchase transactions as well as fees earned from refinancing its clients’ existing mortgage debt and other financing activities. Other revenues include fees generated from consulting and advisory services, as well as referral fees from other real estate brokers. The Company’s contracts contain one performance obligation related to its real estate brokerage, financing and consulting and advisory services offered to buyers and sellers of commercial real estate and provide that it is operating as a principal in all its revenue generating activities. The Company does not have multiple-element arrangements, variable consideration, financing components, significant noncash consideration, licenses, long-term contracts with customers or other items affecting the transaction price. Accordingly, the Company determined that the transaction price is fixed and determinable and collectability is reasonably assured. The Company recognizes revenue in principally all cases at the close of escrow for real estate brokerage, close of loan for financing and when services are provided or upon closing of the transaction for other revenues. Mortgage Servicing Rights and Fees Mortgage servicing rights (“MSRs”) are recorded at fair value upon acquisition of the servicing contract. The estimated net cash flows on the contracts are discounted over the estimated life of the underlying loan. The life of the underlying loan is estimated giving consideration to the prepayment provisions in the loan. The Company’s model assumes full prepayment of the loan at or near the point where the prepayment provisions have expired. The MSRs have principally similar risk characteristics. The assumptions used to estimate the fair value of MSRs are based on internal models and are periodically compared to assumptions used by other market participants. Due to the relatively few transactions in the MSR market, we have experienced little volatility in the assumptions we use during the periods presented. Additionally, we do not expect to see much volatility in the assumptions for the foreseeable future. Management actively monitors the assumptions used and makes adjustments to those assumptions when market conditions change or other factors indicate such adjustments are warranted. We carry MSRs at the lower of the amortized cost or fair value and evaluate the carrying value for impairment quarterly. We engage a third party to assist in determining the estimated fair value of our existing MSRs quarterly. All MSRs are amortized using the interest method over the period that servicing income is expected to be received. MSRs are included in other assets in the accompanying condensed consolidated balance sheet. See Note 5 – “Selected Balance Sheet Data” for additional information. Amortization related to the MSRs are included in depreciation and amortization expense in the accompanying condensed consolidated statements of net and comprehensive income. We recognize mortgage servicing revenues upon the acquisition of a servicing obligation and at the time services are rendered, provided the loans are current and the debt service payments are made by the borrowers and when new servicing rights are acquired. The Company records servicing fees when earned. MSRs and related servicing fees are recorded in financing fees in the accompanying condensed consolidated statements of net and comprehensive income. Capitalization of Internal Labor Certain costs related to the development or purchases of internal-use Concentration of Credit Risk Financial instruments that potentially subject the Company to a concentration of credit risk principally consist of cash and cash equivalents, due from independent contractors (included under other assets, net current and other assets non-current available-for-sale, non-current available-for-sale To reduce its credit risk, the Company monitors the credit standing of the financial institutions that hold the Company’s cash and cash equivalents. The Company historically has not experienced any significant losses related to cash and cash equivalents. The Company derives its revenues from a broad range of real estate investors, owners, and users in the United States and Canada, none of which individually represents a significant concentration of credit risk. The Company requires collateral on a case-by-case During the three and six months ended June 30, 2018 and 2017, the Company’s Canadian operations represented less than 1% of total revenues. During the three and six months ended June 30, 2018 and 2017, no office represented 10% or more of total revenues. Business Combinations The Company accounts for business combinations using the acquisition method of accounting, under which the purchase price of the acquisition is allocated to the assets acquired and liabilities assumed using the fair values determined by management as of the acquisition date. The Company recognizes identifiable assets acquired and liabilities assumed (both specific and contingent) at their fair values at the acquisition date. Acquisition-related costs, such as due diligence, legal and accounting fees, are not capitalized or applied in determining the fair value of the acquired assets. The excess of the purchase price over the assets acquired, identifiable intangible assets and liabilities assumed is recognized as goodwill. During the measurement period, the Company records adjustments to the assets acquired and liabilities assumed with corresponding adjustments to goodwill in the reporting period in which the adjustment is identified. After the measurement period, which could be up to one year after the transaction date, subsequent adjustments are recorded in the Company’s consolidated statements of net and comprehensive income. Goodwill The Company evaluates goodwill for impairment annually in the fourth quarter. In addition to the annual impairment evaluation, the Company evaluates at least quarterly whether events or circumstances have occurred in the period subsequent to the annual impairment testing which indicate that it is more likely than not an impairment loss has occurred. The Company currently has only one reporting unit; therefore, all goodwill is allocated to that one reporting unit. Intangible Assets The Company’s intangible assets primarily include non-compete Segment Reporting The Company follows the guidance for segment reporting, which requires reporting information on operating segments in interim and annual financial statements. Substantially all of the Company’s operations involve the delivery of commercial real estate services to its customers including real estate investment sales, financing and consulting and advisory services. Management makes operating decisions, assesses performance and allocates resources based on an ongoing review of these integrated operations, which constitute the Company’s only operating segment for financial reporting purposes. Recent Accounting Pronouncements Adopted In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers 2014-09”), 2014-09, 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date 2016-08, Revenue from Contacts with Customers: Principal Versus Agent Considerations 2016-10, Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing No. 2016-12, Revenue from Contracts with Customers: Narrow-Scope Improvements and Practical Expedients 2014-09 2014-09 The Company assessed the impact of the standard and determined that its contracts contain one performance obligation related to its real estate brokerage, financing and consulting and advisory services offered to buyers and sellers of commercial real estate and provide that it is operating as a principal in all of its revenue generating activities. The Company does not have multiple-element arrangements, variable consideration, financing components, significant noncash consideration, licenses, long-term contracts with customers or other items affecting the transaction price. The Company determined the transaction price is generally fixed and determinable and collectability is reasonably assured. Revenue was and will continue to be recognized in principally all cases at the close of escrow for real estate brokerage, close of loan for financing and when services are provided upon closing of the transaction for other revenues. Accordingly, the adoption of ASU 2014-09, In January 2017, the FASB issued ASU 2017-01, 2017-01 2017-01 In January 2017, the FASB issued ASU 2017-04, 2017-04 2017-04 2017-04 In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income 2018-02”). 2018-02 2018-02 Pending Adoption In February 2016, the FASB issued ASU No. 2016-02, Leases In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses 2016-13”). 2016-13 2016-13, available-for In June 2018, the FASB issued ASU No. 2018-7, Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting 2018-7”). 2018-7 Revenue from Contracts with Customers

Acquisition

Acquisition	6 Months Ended
	Jun. 30, 2018
Business Combinations [Abstract]
Acquisition	3. Acquisition During the second quarter, the Company completed two related acquisitions for approximately $6.2 million, net of cash received, plus contingent consideration which may be paid over the three-year or five-year period after the acquisitions based on achievement of certain EBITDA targets. The Company determined the fair value of the contingent consideration was $1.7 million using a probability-weighted, discounted cash flow estimate based on achieving EBITDA targets. See Note 9 – “Fair Value Measurements” for additional information. The acquisitions expand the Company’s network of loan originators and provides further diversification to its loan origination platform and financing services. The operations will be merged into the Company’s existing operations. The acquisitions were accounted for as a business combination, with the results of operations included in the Company’s consolidated results from the acquisition date through June 30, 2018, which were not material. Based on a preliminary purchase price allocation, $2.0 million, net, was allocated to mortgage servicing assets ($2.1 million) and liabilities ($0.1 million), $1.6 million was allocated to the fair values of intangible assets, $0.1 million to acquired working capital, with the remainder of $4.2 million allocated to goodwill. Goodwill and other intangible assets consisted of the following (in thousands): June 30, December, 31 Goodwill $ 4,186 $ — Other intangible assets, net of amortization 1,541 — Total intangible assets $ 5,727 $ — The net change in the carrying value of other intangible assets consisted of the following (in thousands): Six Months 2018 2017 Beginning balance $ — $ — Additions from acquisition 1,571 — Amortization (30 ) — Ending balance $ 1,541 $ — The goodwill recorded as part of the acquisitions arose from the acquired assembled workforce and commercial lending platform. The Company expects all of goodwill to be tax deductible, with the tax-deductible During the six months ended June 30, 2018, the Company adjusted the contingent consideration by an immaterial amount and did not make any cash payments related to the contingent consideration.

Property and Equipment

Property and Equipment	6 Months Ended
	Jun. 30, 2018
Property, Plant and Equipment [Abstract]
Property and Equipment	4. Property and Equipment Property and equipment, net consisted of the following (in thousands): June 30, December, 31 Computer software and hardware equipment $ 17,172 $ 16,247 Furniture, fixtures, and equipment 22,744 21,695 Less: accumulated depreciation and amortization (22,757 ) (20,789 ) $ 17,159 $ 17,153 During the six months ended June 30, 2018 and 2017, the Company wrote off approximately $0.8 million and $1.1 million, respectively, of fully depreciated computer software and hardware and furniture, fixtures and equipment.

Selected Balance Sheet Data

Selected Balance Sheet Data	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Selected Balance Sheet Data	5. Selected Balance Sheet Data Other Assets Other assets consisted of the following (in thousands): Current Non-Current June 30, December 31, June 30, December 31, Mortgage servicing rights, net of amortization $ — $ — $ 2,121 $ — Due from independent contractors, net (1) (2) 2,989 3,672 25,780 21,726 Security deposits — — 1,151 1,158 Employee notes receivable (3) 244 366 154 255 Customer trust accounts and other 1,685 1,491 44 24 $ 4,918 $ 5,529 $ 29,250 $ 23,163 (1) Represents amounts advanced, notes receivable and other receivables due from the Company’s investment sales and financing professionals. The notes receivable along with interest, are typically collected from future commissions and are generally due in one to five years. (2) Includes allowance for doubtful accounts related to current receivables of $409 and $494 as of June 30, 2018 and December 31, 2017, respectively. The Company recorded a provision (recovery) for bad debt expense of $77 and $(10) and wrote off $4 and $(6) of these receivables for the three months ended June 30, 2018 and 2017, respectively. The Company recorded a (recovery) provision for bad debt expense of $(29) and $(54) and wrote off $55 and $10 of these receivables for the six months ended June 30, 2018 and 2017, respectively. Any cash receipts on notes are applied first to unpaid principal balance prior to any income being recognized. (3) See Note 8 – “Related-Party Transactions” for additional information. The net change in the carrying value of MSRs consisted of the following (in thousands): Six Months 2018 2017 Beginning balance $ — $ — Additions from acquisition 2,121 — Additions 41 — Amortization (41 ) — Ending balance $ 2,121 $ — See Note 9 – “Fair Value Measurements” for additional information about MSRs. Deferred Compensation and Commissions Deferred compensation and commissions consisted of the following (in thousands): Current Non-Current June 30, December 31, June 30, December 31, Stock appreciation rights (“SARs”) liability (1) $ 1,895 $ 1,662 $ 18,931 $ 20,217 Commissions payable to investment sales and financing professionals 30,707 46,257 14,917 21,924 Deferred compensation liability (1) 1,505 1,261 7,709 7,220 $ 34,107 $ 49,180 $ 41,557 $ 49,361 (1) The SARs and deferred compensation liability become subject to payout as a result of a participant no longer being considered as a service provider. As a result of the retirement of certain participants, estimated amounts to be paid to the participants within the next twelve months has been classified as current. SARs Liability Prior to the IPO, certain employees of the Company were granted SARs under a stock-based compensation program assumed by MMC. In connection with the IPO, the SARs agreements were revised, the MMC liability of $20.0 million for the SARs was frozen as of March 31, 2013, and was transferred to MMI through a capital distribution. The SARs liability will be settled with each participant in ten annual installments in January of each year upon retirement or termination from service, or in full upon consummation of a change in control of the Company. Under the revised agreements, MMI is required to accrue interest on the outstanding balance beginning on January 1, 2014 at a rate based on the 10-year Estimated payouts within the next twelve months for participants that have separated from service have been classified as current. During the six months ended June 30, 2018, the Company made total payments (consisting of accumulated interest) of $1.5 million classified as an operating cash flow in the deferred compensation and commissions caption in the accompanying condensed consolidated statement of cash flows. Commissions Payable Certain investment sales professionals have the ability to earn additional commissions after meeting certain annual revenue thresholds. These commissions are recognized as cost of services in the period in which they are earned as they relate to specific transactions closed. The Company has the ability to defer payment of certain commissions, at its election, for up to three years. Commissions payable that are not expected to be paid within twelve months are classified as long-term. Deferred Compensation Liability A select group of management is eligible to participate in the Marcus & Millichap Deferred Compensation Plan (the “Deferred Compensation Plan”). The plan is a non-qualified in-service The net change in the carrying value of the assets held in the rabbi trust and the net change in the carrying value of the deferred compensation liability, each exclusive of additional contributions, distributions and trust expenses consisted of the following (in thousands): Three Months Six Months 2018 2017 2018 2017 Increase in the carrying value of the assets held in the rabbi trust (1) $ 176 $ 170 $ 190 $ 369 Increase in the net carrying value of the deferred compensation obligation (2) $ 188 $ 188 $ 188 $ 399 (1) Recorded in other income (expense), net in the condensed consolidated statements of net and comprehensive income. (2) Recorded in selling, general and administrative expense in the condensed consolidated statements of net and comprehensive income.

Investments in Marketable Secur

Investments in Marketable Securities	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Investments in Marketable Securities	6. Investments in Marketable Securities Amortized cost and fair value of marketable securities, available-for-sale, June 30, 2018 December 31, 2017 Amortized Gross Gross Fair Amortized Gross Gross Fair Short-term investments: U.S. treasuries $ 74,147 $ — $ (136 ) $ 74,011 $ 57,712 $ — $ (88 ) $ 57,624 U.S. government sponsored entities 3,510 — (27 ) 3,483 7,016 — (8 ) 7,008 Corporate debt securities 7,907 — (15 ) 7,892 8,931 — (3 ) 8,928 Asset-backed securities and other 100 — — 100 — — — — $ 85,664 $ — $ (178 ) $ 85,486 $ 73,659 $ — $ (99 ) $ 73,560 Long-term investments: U.S. treasuries $ 3,726 $ — $ (169 ) $ 3,557 $ 18,111 $ 7 $ (164 ) $ 17,954 U.S. government sponsored entities 1,663 — (73 ) 1,590 5,306 — (62 ) 5,244 Corporate debt securities 20,614 — (513 ) 20,101 22,505 268 (54 ) 22,719 Asset-backed securities and other 6,721 5 (57 ) 6,669 6,180 17 (15 ) 6,182 $ 32,724 $ 5 $ (812 ) $ 31,917 $ 52,102 $ 292 $ (295 ) $ 52,099 The amortized cost and fair value of the Company’s investments in available-for-sale June 30, 2018 December 31, 2017 Unrealized Fair Unrealized Fair Less than 12 months $ (721 ) $ 95,835 $ (158 ) $ 63,229 12 months or longer $ (269 ) $ 19,988 $ (236 ) $ 44,961 Gross realized gains and gross realized losses from the sales of the Company’s available-for-sale Three Months Six Months 2018 2017 2018 2017 Gross realized gains (1) $ 12 $ 1 $ 12 $ 1 Gross realized losses (1) $ — $ — $ — $ — (1) Recorded in other income (expense), net in the condensed consolidated statements of net and comprehensive income. The cost basis of securities sold were determined based on the specific identification method. As of June 30, 2018, the Company considers the declines in market value of its marketable securities, available-for-sale available-for-sale Amortized cost and fair value of marketable securities, available-for-sale, June 30, 2018 December 31, 2017 Amortized Fair Amortized Fair Due in one year or less $ 85,664 $ 85,486 $ 73,659 $ 73,560 Due after one year through five years 11,217 11,087 30,644 30,517 Due after five years through ten years 15,648 15,125 15,090 15,200 Due after ten years 5,859 5,705 6,368 6,382 $ 118,388 $ 117,403 $ 125,761 $ 125,659 Weighted average contractual maturity 2.5 years 2.6 years Actual maturities may differ from contractual maturities because certain borrowers have the right to prepay certain obligations with or without prepayment penalties.

Notes Payable to Former Stockho

Notes Payable to Former Stockholders	6 Months Ended
	Jun. 30, 2018
Payables and Accruals [Abstract]
Notes Payable to Former Stockholders	7. Notes Payable to Former Stockholders In conjunction with the Spin-Off Accrued interest included in accounts payable and other liabilities in the accompanying condensed consolidated balance sheets pertaining to the Notes consisted of the following (in thousands): June 30, December 31, Accrued interest $ 78 $ 305 Interest expense pertaining to the Notes consisted of the following (in thousands): Three Months Six Months 2018 2017 2018 2017 Interest expense $ 102 $ 113 $ 211 $ 235

Related-Party Transactions

Related-Party Transactions	6 Months Ended
	Jun. 30, 2018
Related Party Transactions [Abstract]
Related-Party Transactions	8. Related-Party Transactions Shared and Transition Services Prior to October 2013, the Company operated under a shared services arrangement with MMC whereby the Company was charged for actual costs specifically incurred on behalf of the Company or allocated to the Company on a pro rata basis. Beginning in October 2013, certain services are provided to the Company under a Transition Services Agreement (“TSA”) between MMC and the Company, which replaced the pre-IPO Brokerage and Financing Services with the Subsidiaries of MMC MMC has wholly or majority owned subsidiaries that buy and sell commercial real estate properties. The Company performs certain brokerage and financing services related to transactions of the subsidiaries of MMC. For the three months ended June 30, 2018 and 2017, the Company earned real estate brokerage commissions and financing fees of $560,000 and $120,000, respectively, from transactions with subsidiaries of MMC related to these services. The Company incurred cost of services of $321,000 and $65,000, respectively, related to these revenues. For the six months ended June 30, 2018 and 2017, the Company earned real estate brokerage commissions and financing fees of $3.1 million and $323,000, respectively, from subsidiaries of MMC related to these services. The Company incurred cost of services of $1.8 million and $187,000, respectively, related to these revenues. Operating Lease with MMC The Company has an operating lease with MMC for a single story office building located in Palo Alto, California, which expires on May 31, 2022. Rent expense for this lease aggregated $255,000 and $253,000 for the three months ended June 30, 2018 and 2017 respectively. Rent expense for this lease aggregated $508,000 and 506,000 for the six months ended June 30, 2018 and 2017 respectively. Rent expense is included in selling, general and administrative expense in the accompanying condensed consolidated statements of net and comprehensive income. Accounts Payable and Other Liabilities with MMC As of June 30, 2018 and December 31, 2017, accounts payable and other liabilities with MMC totaling $105,000 and $91,000, respectively, remain unpaid and are included in accounts payable and other liabilities in the accompanying condensed consolidated balance sheets. Other The Company makes advances to non-executive time-to-time. non-current), As of June 30, 2018, George M. Marcus, the Company’s founder and Co-Chairman,

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	9. Fair Value Measurements U.S. GAAP defines the fair value of a financial instrument as the amount that would be received from the sale of an asset in an orderly transaction between market participants at the measurement date. The Company is responsible for the determination of the value of the investment carried at fair value and the supporting methodologies and assumptions. The Company uses various pricing sources to validate the values utilized. The degree of judgment used in measuring the fair value of financial instruments is generally inversely correlated with the level of observable valuation inputs. Financial instruments with quoted prices in active markets generally have more pricing observability and less judgment is used in measuring fair value. Financial instruments for which no quoted prices are available have less observability and are measured at fair value using valuation models or other pricing techniques that require more judgment. Assets recorded at fair value are measured and classified in accordance with a fair value hierarchy consisting of the three “levels” based on the observability of inputs available in the marketplace used to measure the fair values as discussed below: Level 1: Level 2: Level 3: Investment in marketable securities, available-for-sale Recurring Fair Value Measurements The Company values its investments including assets held in rabbi trust, commercial paper, money market funds and investments in marketable securities, available-for-sale Assets carried at fair value are categorized into one of the three categories described above and consisted of the following (in thousands): June 30, 2018 December 31, 2017 Fair Value Level 1 Level 2 Level 3 Fair Value Level 1 Level 2 Level 3 Assets held in rabbi trust $ 8,890 $ — $ 8,890 $ — $ 8,787 $ — $ 8,787 $ — Cash equivalents (1) Commercial paper $ 14,824 $ — $ 14,824 $ — $ 11,441 $ — $ 11,441 $ — Money market funds 186,412 186,412 — — 157,788 157,788 — — $ 201,236 $ 186,412 $ 14,824 $ — $ 169,229 $ 157,788 $ 11,441 $ — Marketable securities, available-for-sale: Short-term investments: U.S. treasuries $ 74,011 $ 74,011 $ — $ — $ 57,624 $ 57,624 $ — $ — U.S. government sponsored entities 3,483 — 3,483 — 7,008 — 7,008 — Corporate debt securities 7,892 — 7,892 — 8,928 — 8,928 — Asset-backed securities and other 100 — 100 — — — — — $ 85,486 $ 74,011 $ 11,475 $ — $ 73,560 $ 57,624 $ 15,936 $ — Long-term investments: U.S. treasuries $ 3,557 $ 3,557 $ — $ — $ 17,954 $ 17,954 $ — $ — U.S. government sponsored entities 1,590 — 1,590 — 5,244 — 5,244 — Corporate debt securities 20,101 — 20,101 — 22,719 — 22,719 — Asset-backed securities and other 6,669 — 6,669 — 6,182 — 6,182 — $ 31,917 $ 3,557 $ 28,360 $ — $ 52,099 $ 17,954 $ 34,145 $ — (1) Included in cash and cash equivalents on the accompanying condensed consolidated balance sheet. The Company values contingent consideration from its acquisitions at fair value on a recurring basis and is a Level 3 valuation. At June 30, 2018, the fair value of the contingent consideration was $1.7 million using a probability weighted, discounted cash flow estimate based on achieving EBITDA targets. There were no transfers in or out of Level 1 and Level 2 during the six months ended June 30, 2018. Nonrecurring Fair Value Measurements In accordance with U.S. GAAP, from time to time, the Company measures certain assets at fair value on a nonrecurring basis. These assets include MSRs. MSRs are recorded at fair value upon initial recording and the Company has elected the amortization method for the subsequent measurement of MSRs. The Company’s MSRs do not trade in an active, open market with readily observable prices. The estimated fair value of the Company’s MSRs, which are considered Level 3, were developed using discounted cash flow models that calculate the present value of estimated future net servicing income. The model considers contractually specified servicing fees, prepayment assumptions, delinquency rates, late charges, other ancillary revenue, costs to service, and other economic factors. The Company periodically reassesses and adjusts, when necessary, the underlying inputs and assumptions used in the model to reflect observable market conditions and assumptions that a market participant would consider in valuing an MSR asset. MSRs are carried at the lower of amortized cost or fair value. The fair value of the MSRs approximated the carrying value at June 30, 2018.

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 2018
Federal Home Loan Banks [Abstract]
Stockholders' Equity	10. Stockholders’ Equity Common Stock As of June 30, 2018 and December 31, 2017, there were 38,621,712 and 38,374,011 shares of common stock, $0.0001 par value, issued and outstanding, which includes unvested restricted stock awards issued to non-employee Preferred Stock The Company has 25,000,000 authorized shares of preferred stock with a par value $0.0001 per share. At June 30, 2018 and December 31, 2017, there were no preferred shares issued or outstanding. Accumulated Other Comprehensive (Loss) Income The components of accumulated other comprehensive income as of June 30, 2018, by component, net of income taxes consisted of the following (in thousands): Unrealized gains available-for-sale Foreign (3) Total Beginning balance, December 31, 2017 $ (62 ) $ 1,002 $ 940 Cumulative effect of change in accounting principle (1) (13 ) — (13 ) Balance at January 1, 2018, as adjusted (75 ) 1,002 927 Other comprehensive (loss) income before reclassifications (664 ) 73 (591 ) Amounts reclassified from accumulated other comprehensive (loss) income (2) 8 — 8 Net current-period other comprehensive (loss) income (656 ) 73 (583 ) Ending balance, June 30, 2018 $ (731 ) $ 1,075 $ 344 (1) Relates to reclassification of stranded tax effects from accumulated other comprehensive income to retained earnings as a result of adoption of ASU 2018-02. (2) Included as a component of other income (expense), net in the condensed consolidated statements of net and comprehensive income. The reclassifications were determined on a specific identification basis. (3) The Company has not provided for U.S. taxes on unremitted earnings of its foreign subsidiary as it is operating at a loss and has no earnings and profits to remit. As a result, deferred taxes were not provided related to the cumulative foreign currency translation adjustments.

Stock-Based Compensation Plans

Stock-Based Compensation Plans	6 Months Ended
	Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation Plans	11. Stock-Based Compensation Plans 2013 Omnibus Equity Incentive Plan The board of directors adopted the 2013 Omnibus Equity Incentive Plan (“2013 Plan”), which became effective upon the Company’s IPO. In February 2017, the board of directors amended and restated the 2013 Plan, which was approved by the shareholders in May 2017. Grants are made from time to time by the Company’s board of directors at its discretion subject to certain restrictions as to the number and value of shares that may be granted to any individual. Upon adoption of the 2013 Plan, 5,500,000 shares of common stock were initially reserved for the issuance of awards. Pursuant to the automatic increases previously provided for in the 2013 Plan, the board of directors approved share reserve increases aggregating 3,300,000. Pursuant to the amendment and restatement of the 2013 Plan referenced above, the automatic share increase provision was removed. As of June 30, 2018, there were 5,472,696 shares available for future grants under the Plan. Awards Granted and Settled Under the 2013 Plan, the Company has issued restricted stock awards (“RSAs”) to non-employee one-year During the six months ended June 30, 2018, 274,740 shares of RSUs vested of which 274,740 shares of common stock were delivered and 52,919 shares of common stock were withheld to pay applicable required employee statutory withholding taxes based on the market value of the shares on the vesting date. The shares withheld for taxes were returned to the share reserve and are available for future issuance in accordance with provisions of the 2013 Plan. Outstanding Awards Activity under the 2013 Plan consisted of the following (dollars in thousands, except per share data): RSA Non-employee RSU RSU Total Weighted- Nonvested shares at December 31, 2017 30,732 500,859 450,264 981,855 $ 23.90 Granted February 2018 — 106,419 20,293 126,712 March 2018 — 15,000 — 15,000 May 2018 12,852 4,854 14,280 31,986 Total Granted 12,852 126,273 34,573 173,698 32.90 Vested (12,936 ) (138,229 ) (136,511 ) (287,676 ) 21.13 Transferred — — — — — Forfeited/canceled — (1,960 ) (4,598 ) (6,558 ) 29.21 Nonvested shares at June 30, 2018 (1) 30,648 486,943 343,728 861,319 $ 26.60 Unrecognized stock-based compensation expense as of June 30, 2018 (2) $ 708 $ 11,743 $ 9,798 $ 22,249 Weighted average remaining vesting period (years) as of June 30, 2018 1.14 3.38 2.77 3.04 (1) Nonvested RSUs will be settled through the issuance of new shares of common stock. (2) The total unrecognized compensation expense is expected to be recognized over a weighted-average period of approximately 3.04 years. As of June 30, 2018, 578,618 fully vested deferred stock units (“DSUs”) remained outstanding. See “Amendments to Restricted Stock and SARs” section below and Note 13 – “Earnings per Share” for additional information. Future share settlements of DSUs by year consisted of the following: June 30, 2018 237,052 2021 60,373 2022 281,193 578,618 Employee Stock Purchase Plan In 2013, the Company adopted the 2013 Employee Stock Purchase Plan (“ESPP Plan”). The ESPP Plan qualifies under Section 423 of the IRS Code and provides for consecutive, non-overlapping 6-month 6-month The ESPP Plan initially had 366,667 shares of common stock reserved and 233,867 and 246,895 shares of common stock remain available for issuance for each of the periods at June 30, 2018 and December 31, 2017, respectively. The ESPP Plan provides for annual increases in the number of shares available for issuance under the ESPP, equal to the least of (i) 366,667 shares, (ii) 1% of the outstanding shares on such date, or (iii) an amount determined by the board. Pursuant to the provisions of the ESPP Plan, the board of directors determined a share reserve increase was not required in the prior years. As of June 30, 2018, total unrecognized compensation cost related to the ESPP Plan was $55,000 and is expected to be recognized over a weighted average period of 0.38 years. Amendments to Restricted Stock and SARs Restricted Stock In connection with the IPO, the Company entered into sales restriction agreements with certain of its executive officers. The sale restriction agreements provided for vesting acceleration as to all outstanding shares of restricted shares held by the executive officers and termination of certain existing Buy-Sell SARs and DSUs Prior to the IPO, certain employees were granted SARs. As of March 31, 2013, the outstanding SARs were frozen at the liability amount, and will be paid out to each participant in installments upon retirement or departure under the terms of the revised SARs agreements. To replace beneficial ownership in the SARs, the difference between the book value liability and the fair value of the awards was granted to plan participants in the form of DSUs, which were fully vested upon receipt and will be settled in actual stock at a rate of 20% per year if the participant remains employed by the Company during that period (otherwise all unsettled shares of stock upon termination from service will be settled five years from the termination date, unless otherwise agreed to by the Company). In the event of death or termination of service after reaching the age of 67, 100% of the DSUs will be settled. Summary of Stock-Based Compensation Components of stock-based compensation are included in selling, general and administrative expense in the condensed consolidated statements of net and comprehensive income consisted of the following (in thousands, except common stock price): Three Months Six Months 2018 2017 2018 2017 Employee stock purchase plan $ 24 $ 29 $ 63 $ 75 RSAs – non-employee 165 90 276 179 RSUs – employees 1,096 952 2,049 1,866 RSUs – independent contractors (1) 1,874 1,044 3,384 1,861 $ 3,159 $ 2,115 $ 5,772 $ 3,981 Common stock price at beginning of period $ 36.06 $ 24.58 $ 32.61 $ 26.72 Common stock price at end of period $ 39.01 $ 26.36 $ 39.01 $ 26.36 Increase (decrease) in stock price $ 2.95 $ 1.78 $ 6.40 $ (0.36 ) (1) The Company grants RSUs to independent contractors (i.e. investment sales and financing professionals), who are considered non-employees

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	12. Income Taxes The Company’s effective tax rate for the three and six months ended June 30, 2018 was 26.9% and 26.4%, respectively, compared to 39.2% and 38.9% for the three and six months ended June 30, 2017, respectively. The Company provides for the effects of income taxes in interim financial statements based on the Company’s estimate of its annual effective tax rate for the full year, which is based on forecasted income by jurisdiction where the Company operates, adjusted for the tax effects of items that relate discretely to the period, if any. The provision for income taxes differs from the amount computed by applying the U.S. federal statutory rate to income before provision for income taxes and consisted of the following (in thousands): Three Months Ended June 30, 2018 2017 Amount Rate Amount Rate Income tax expense at the federal statutory rate $ 6,368 21.0 % $ 8,967 35.0 % State income tax expense, net of federal benefit 1,415 4.7 % 973 3.8 % Effect of foreign operations (12 ) 0.0 % 25 0.1 % Windfall tax benefits, net related to stock-based compensation (28 ) (0.1 )% — — Change in valuation allowance 74 0.2 % 62 0.2 % Permanent items and other 338 1.1 % 25 0.1 % $ 8,155 26.9 % $ 10,052 39.2 % Six Months Ended June 30, 2018 2017 Amount Rate Amount Rate Income tax expense at the federal statutory rate $ 11,474 21.0 % $ 15,793 35.0 % State income tax expense, net of federal benefit 2,511 4.6 % 1,741 3.9 % Effect of foreign operations (20 ) 0.0 % 47 0.1 % Windfall tax benefits, net related to stock-based compensation (245 ) (0.5 )% (156 ) (0.4 )% Change in valuation allowance 121 0.2 % 116 0.3 % Permanent items and other 616 1.1 % 13 — $ 14,457 26.4 % $ 17,554 38.9 % On December 22, 2017, the Act was enacted, which significantly changed the U.S. corporate income tax laws by, among other items, reducing the U.S. corporate income tax rate to 21% from 35% starting in 2018, eliminating certain exceptions to Section 162(m) of the Internal Revenue Code and expanding the employees, companies and types of compensation covered by Section 162(m), and creating a territorial tax system with a one-time

Earnings per Share

Earnings per Share	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Earnings per Share	13. Earnings per Share Basic and diluted earnings per share for the three and six months ended June 30, 2018 and 2017, respectively consisted of the following (in thousands, except per share data): Three Months Ended Six Months Ended 2018 2017 2018 2017 Numerator (Basic and Diluted): Net income $ 22,167 $ 15,569 $ 40,178 $ 27,569 Denominator: Basic Weighted average common shares issued and outstanding 38,606 38,100 38,576 38,075 Deduct: Unvested RSAs (1) (31 ) (28 ) (31 ) (29 ) Add: Fully vested DSUs (2) 579 930 579 930 Weighted Average Common Shares Outstanding 39,154 39,002 39,124 38,976 Basic earnings per common share $ 0.57 $ 0.40 $ 1.03 $ 0.71 Diluted Weighted Average Common Shares Outstanding from above 39,154 39,002 39,124 38,976 Add: Dilutive effect of RSUs, RSAs & ESPP 231 130 174 142 Weighted Average Common Shares Outstanding 39,385 39,132 39,298 39,118 Diluted earnings per common share $ 0.56 $ 0.40 $ 1.02 $ 0.70 Antidilutive shares excluded from diluted earnings per common share (3) 55 317 242 324 (1) RSAs were issued and outstanding to the non-employee one-year (2) Shares are included in weighted average common shares outstanding as the shares are fully vested but have not yet been delivered. See Note 11 – “Stock-Based Compensation Plans” for additional information. (3) Primarily pertaining to RSU grants to the Company’s employees and independent contractors.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	14. Commitments and Contingencies Credit Agreement On June 18, 2014, the Company entered into a Credit Agreement with Wells Fargo Bank, National Association (“Bank”), dated as of June 1, 2014 (the “Credit Agreement”). The Credit Agreement provides for a $60.0 million principal amount senior secured revolving credit facility that is guaranteed by all of the Company’s domestic subsidiaries (the “Credit Facility”), which, as amended, matures on June 1, 2020. The Company may borrow, repay and reborrow amounts under the Credit Facility until its maturity date, at which time all amounts outstanding under the Credit Facility must be repaid in full. Borrowings under the Credit Agreement are available for general corporate purposes and working capital. The Credit Facility includes a $10.0 million sublimit for the issuance of standby letters of credit of which $533,000 was utilized at June 30, 2018. Borrowings under the Credit Facility will bear interest, at the Company’s option, at either the (i) Base Rate (defined as the highest of (a) the Bank’s prime rate, (b) the Federal Funds Rate plus 1.5% and (c) one-month The Credit Facility contains customary covenants, including financial and other covenant reporting requirements and events of default. Financial covenants require the Company, on a combined basis with its guarantors, to maintain (i) an EBITDAR Coverage Ratio (as defined in the Credit Agreement) of not less than 1.25:1.0 as of each quarter end and (ii) total funded debt to EBITDA not greater than 2.0:1.0 as of each quarter end both on a rolling 4-quarter non-financial Litigation The Company is subject to various legal proceedings and claims that arise in the ordinary course of business, some of which involve claims for damages that are substantial in amount. Most of these litigation matters are covered by insurance, which contain deductibles, exclusions, claim limits and aggregate policy limits. While the ultimate liability for these legal proceeding cannot be determined, the Company reviews the need for its accrual for loss contingencies quarterly and records an accrual for litigation related losses where the likelihood of loss is both probable and estimable. The Company believes that the ultimate resolution of the legal proceedings will not have a material adverse effect on its financial condition or results of operations. The Company accrues legal fees for litigation as the legal services are provided. Other In connection with certain agreements with investment sales and financing professionals, the Company may agree to advance amounts to its investment sales and financing professionals upon reaching certain performance goals. Such commitments as of June 30, 2018 aggregated $1.5 million.

Description of Business and B22

Description of Business and Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Description of Business	Description of Business Marcus & Millichap, Inc., (the “Company”, “Marcus & Millichap”, or “MMI”), a Delaware corporation, is a brokerage firm specializing in commercial real estate investment sales, financing, research and advisory services. As of June 30, 2018, MMI operates 78 offices in the United States and Canada through its wholly-owned subsidiary, Marcus & Millichap Real Estate Investment Services, Inc. (“MMREIS”), which includes the operations of Marcus & Millichap Capital Corporation (“MMCC”).
Reorganization and Initial Public Offering	Reorganization and Initial Public Offering MMI was formed in June 2013 in preparation for Marcus & Millichap Company (“MMC”) to spin-off (“Spin-Off”).
Basis of Presentation	Basis of Presentation The financial information presented in the accompanying unaudited condensed consolidated financial statements, has been prepared in accordance with rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for quarterly reports on Form 10-Q Article 10-01 Regulation S-X. 10-K
Consolidation	Consolidation The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the related disclosures at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Revenue Recognition	Revenue Recognition The Company generates real estate brokerage commissions by acting as a broker for real estate owners or investors seeking to buy or sell commercial properties. The Company generates financing fees from securing financing on purchase transactions as well as fees earned from refinancing its clients’ existing mortgage debt and other financing activities. Other revenues include fees generated from consulting and advisory services, as well as referral fees from other real estate brokers. The Company’s contracts contain one performance obligation related to its real estate brokerage, financing and consulting and advisory services offered to buyers and sellers of commercial real estate and provide that it is operating as a principal in all its revenue generating activities. The Company does not have multiple-element arrangements, variable consideration, financing components, significant noncash consideration, licenses, long-term contracts with customers or other items affecting the transaction price. Accordingly, the Company determined that the transaction price is fixed and determinable and collectability is reasonably assured. The Company recognizes revenue in principally all cases at the close of escrow for real estate brokerage, close of loan for financing and when services are provided or upon closing of the transaction for other revenues.
Mortgage Servicing Rights and Fees	Mortgage Servicing Rights and Fees Mortgage servicing rights (“MSRs”) are recorded at fair value upon acquisition of the servicing contract. The estimated net cash flows on the contracts are discounted over the estimated life of the underlying loan. The life of the underlying loan is estimated giving consideration to the prepayment provisions in the loan. The Company’s model assumes full prepayment of the loan at or near the point where the prepayment provisions have expired. The MSRs have principally similar risk characteristics. The assumptions used to estimate the fair value of MSRs are based on internal models and are periodically compared to assumptions used by other market participants. Due to the relatively few transactions in the MSR market, we have experienced little volatility in the assumptions we use during the periods presented. Additionally, we do not expect to see much volatility in the assumptions for the foreseeable future. Management actively monitors the assumptions used and makes adjustments to those assumptions when market conditions change or other factors indicate such adjustments are warranted. We carry MSRs at the lower of the amortized cost or fair value and evaluate the carrying value for impairment quarterly. We engage a third party to assist in determining the estimated fair value of our existing MSRs quarterly. All MSRs are amortized using the interest method over the period that servicing income is expected to be received. MSRs are included in other assets in the accompanying condensed consolidated balance sheet. See Note 5 – “Selected Balance Sheet Data” for additional information. Amortization related to the MSRs are included in depreciation and amortization expense in the accompanying condensed consolidated statements of net and comprehensive income. We recognize mortgage servicing revenues upon the acquisition of a servicing obligation and at the time services are rendered, provided the loans are current and the debt service payments are made by the borrowers and when new servicing rights are acquired. The Company records servicing fees when earned. MSRs and related servicing fees are recorded in financing fees in the accompanying
Capitalization of Internal Labor	Capitalization of Internal Labor Certain costs related to the development or purchases of internal-use
Concentration of Credit Risk	Concentration of Credit Risk Financial instruments that potentially subject the Company to a concentration of credit risk principally consist of cash and cash equivalents, due from independent contractors (included under other assets, net current and other assets non-current available-for-sale, non-current available-for-sale To reduce its credit risk, the Company monitors the credit standing of the financial institutions that hold the Company’s cash and cash equivalents. The Company historically has not experienced any significant losses related to cash and cash equivalents. The Company derives its revenues from a broad range of real estate investors, owners, and users in the United States and Canada, none of which individually represents a significant concentration of credit risk. The Company requires collateral on a case-by-case During the three and six months ended June 30, 2018 and 2017, the Company’s Canadian operations represented less than 1% of total revenues. During the three and six months ended June 30, 2018 and 2017, no office represented 10% or more of total revenues.
Business Combinations	Business Combinations The Company accounts for business combinations using the acquisition method of accounting, under which the purchase price of the acquisition is allocated to the assets acquired and liabilities assumed using the fair values determined by management as of the acquisition date. The Company recognizes identifiable assets acquired and liabilities assumed (both specific and contingent) at their fair values at the acquisition date. Acquisition-related costs, such as due diligence, legal and accounting fees, are not capitalized or applied in determining the fair value of the acquired assets. The excess of the purchase price over the assets acquired, identifiable intangible assets and liabilities assumed is recognized as goodwill. During the measurement period, the Company records adjustments to the assets acquired and liabilities assumed with corresponding adjustments to goodwill in the reporting period in which the adjustment is identified. After the measurement period, which could be up to one year after the transaction date, subsequent adjustments are recorded in the Company’s consolidated statements of net and comprehensive income.
Goodwill	Goodwill The Company evaluates goodwill for impairment annually in the fourth quarter. In addition to the annual impairment evaluation, the Company evaluates at least quarterly whether events or circumstances have occurred in the period subsequent to the annual impairment testing which indicate that it is more likely than not an impairment loss has occurred. The Company currently has only one reporting unit; therefore, all goodwill is allocated to that one reporting unit.
Intangible Assets	Intangible Assets The Company’s intangible assets primarily include non-compete
Segment Reporting	Segment Reporting The Company follows the guidance for segment reporting, which requires reporting information on operating segments in interim and annual financial statements. Substantially all of the Company’s operations involve the delivery of commercial real estate services to its customers including real estate investment sales, financing and consulting and advisory services. Management makes operating decisions, assesses performance and allocates resources based on an ongoing review of these integrated operations, which constitute the Company’s only operating segment for financial reporting purposes.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Adopted In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers 2014-09”), 2014-09, 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date 2016-08, Revenue from Contacts with Customers: Principal Versus Agent Considerations 2016-10, Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing No. 2016-12, Revenue from Contracts with Customers: Narrow-Scope Improvements and Practical Expedients 2014-09 2014-09 The Company assessed the impact of the standard and determined that its contracts contain one performance obligation related to its real estate brokerage, financing and consulting and advisory services offered to buyers and sellers of commercial real estate and provide that it is operating as a principal in all of its revenue generating activities. The Company does not have multiple-element arrangements, variable consideration, financing components, significant noncash consideration, licenses, long-term contracts with customers or other items affecting the transaction price. The Company determined the transaction price is generally fixed and determinable and collectability is reasonably assured. Revenue was and will continue to be recognized in principally all cases at the close of escrow for real estate brokerage, close of loan for financing and when services are provided upon closing of the transaction for other revenues. Accordingly, the adoption of ASU 2014-09, In January 2017, the FASB issued ASU 2017-01, 2017-01 2017-01 In January 2017, the FASB issued ASU 2017-04, 2017-04 2017-04 2017-04 In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income 2018-02”). 2018-02 2018-02 Pending Adoption In February 2016, the FASB issued ASU No. 2016-02, Leases In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses 2016-13”). 2016-13 2016-13, available-for In June 2018, the FASB issued ASU No. 2018-7, Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting 2018-7”). 2018-7 Revenue from Contracts with Customers
Fair Value Measurements	U.S. GAAP defines the fair value of a financial instrument as the amount that would be received from the sale of an asset in an orderly transaction between market participants at the measurement date. The Company is responsible for the determination of the value of the investment carried at fair value and the supporting methodologies and assumptions. The Company uses various pricing sources to validate the values utilized. The degree of judgment used in measuring the fair value of financial instruments is generally inversely correlated with the level of observable valuation inputs. Financial instruments with quoted prices in active markets generally have more pricing observability and less judgment is used in measuring fair value. Financial instruments for which no quoted prices are available have less observability and are measured at fair value using valuation models or other pricing techniques that require more judgment. Assets recorded at fair value are measured and classified in accordance with a fair value hierarchy consisting of the three “levels” based on the observability of inputs available in the marketplace used to measure the fair values as discussed below: Level 1: Level 2: Level 3: Investment in marketable securities, available-for-sale Nonrecurring Fair Value Measurements In accordance with U.S. GAAP, from time to time, the Company measures certain assets at fair value on a nonrecurring basis. These assets include MSRs. MSRs are recorded at fair value upon initial recording and the Company has elected the amortization method for the subsequent measurement of MSRs. The Company’s MSRs do not trade in an active, open market with readily observable prices. The estimated fair value of the Company’s MSRs, which are considered Level 3, were developed using discounted cash flow models that calculate the present value of estimated future net servicing income. The model considers contractually specified servicing fees, prepayment assumptions, delinquency rates, late charges, other ancillary revenue, costs to service, and other economic factors. The Company periodically reassesses and adjusts, when necessary, the underlying inputs and assumptions used in the model to reflect observable market conditions and assumptions that a market participant would consider in valuing an MSR asset. MSRs are carried at the lower of amortized cost or fair value. The fair value of the MSRs approximated the carrying value at June 30, 2018.

Acquisition (Tables)

Acquisition (Tables)	6 Months Ended
	Jun. 30, 2018
Business Combinations [Abstract]
Summary of Goodwill and Other Intangible Assets	Goodwill and other intangible assets consisted of the following (in thousands): June 30, December, 31 Goodwill $ 4,186 $ — Other intangible assets, net of amortization 1,541 — Total intangible assets $ 5,727 $ —
Summary of Net Change in Carrying Value of Other Intangible Assets	The net change in the carrying value of other intangible assets consisted of the following (in thousands): Six Months 2018 2017 Beginning balance $ — $ — Additions from acquisition 1,571 — Amortization (30 ) — Ending balance $ 1,541 $ —

Property and Equipment (Tables)

Property and Equipment (Tables)	6 Months Ended
	Jun. 30, 2018
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment, Net	Property and equipment, net consisted of the following (in thousands): June 30, December, 31 Computer software and hardware equipment $ 17,172 $ 16,247 Furniture, fixtures, and equipment 22,744 21,695 Less: accumulated depreciation and amortization (22,757 ) (20,789 ) $ 17,159 $ 17,153

Selected Balance Sheet Data (Ta

Selected Balance Sheet Data (Tables)	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Other Assets	Other assets consisted of the following (in thousands): Current Non-Current June 30, December 31, June 30, December 31, Mortgage servicing rights, net of amortization $ — $ — $ 2,121 $ — Due from independent contractors, net (1) (2) 2,989 3,672 25,780 21,726 Security deposits — — 1,151 1,158 Employee notes receivable (3) 244 366 154 255 Customer trust accounts and other 1,685 1,491 44 24 $ 4,918 $ 5,529 $ 29,250 $ 23,163 (1) Represents amounts advanced, notes receivable and other receivables due from the Company’s investment sales and financing professionals. The notes receivable along with interest, are typically collected from future commissions and are generally due in one to five years. (2) Includes allowance for doubtful accounts related to current receivables of $409 and $494 as of June 30, 2018 and December 31, 2017, respectively. The Company recorded a provision (recovery) for bad debt expense of $77 and $(10) and wrote off $4 and $(6) of these receivables for the three months ended June 30, 2018 and 2017, respectively. The Company recorded a (recovery) provision for bad debt expense of $(29) and $(54) and wrote off $55 and $10 of these receivables for the six months ended June 30, 2018 and 2017, respectively. Any cash receipts on notes are applied first to unpaid principal balance prior to any income being recognized. (3) See Note 8 – “Related-Party Transactions” for additional information.
Summary of Net Change in Carrying Value of MSRs	The net change in the carrying value of MSRs consisted of the following (in thousands): Six Months 2018 2017 Beginning balance $ — $ — Additions from acquisition 2,121 — Additions 41 — Amortization (41 ) — Ending balance $ 2,121 $ —
Components of Deferred Compensation and Commissions	Deferred compensation and commissions consisted of the following (in thousands): Current Non-Current June 30, December 31, June 30, December 31, Stock appreciation rights (“SARs”) liability (1) $ 1,895 $ 1,662 $ 18,931 $ 20,217 Commissions payable to investment sales and financing professionals 30,707 46,257 14,917 21,924 Deferred compensation liability (1) 1,505 1,261 7,709 7,220 $ 34,107 $ 49,180 $ 41,557 $ 49,361 (1) The SARs and deferred compensation liability become subject to payout as a result of a participant no longer being considered as a service provider. As a result of the retirement of certain participants, estimated amounts to be paid to the participants within the next twelve months has been classified as current.
Summary of Net Change in Carrying Value of Assets Held in Rabbi Trust and Deferred Compensation Liability	The net change in the carrying value of the assets held in the rabbi trust and the net change in the carrying value of the deferred compensation liability, each exclusive of additional contributions, distributions and trust expenses consisted of the following (in thousands): Three Months Six Months 2018 2017 2018 2017 Increase in the carrying value of the assets held in the rabbi trust (1) $ 176 $ 170 $ 190 $ 369 Increase in the net carrying value of the deferred compensation obligation (2) $ 188 $ 188 $ 188 $ 399 (1) Recorded in other income (expense), net in the condensed consolidated statements of net and comprehensive income. (2) Recorded in selling, general and administrative expense in the condensed consolidated statements of net and comprehensive income.

Investments in Marketable Sec26

Investments in Marketable Securities (Tables)	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Schedule of Amortized Cost and Fair Value of Marketable Securities, Available-for-Sale, by Type of Security	Amortized cost and fair value of marketable securities, available-for-sale, June 30, 2018 December 31, 2017 Amortized Gross Gross Fair Amortized Gross Gross Fair Short-term investments: U.S. treasuries $ 74,147 $ — $ (136 ) $ 74,011 $ 57,712 $ — $ (88 ) $ 57,624 U.S. government sponsored entities 3,510 — (27 ) 3,483 7,016 — (8 ) 7,008 Corporate debt securities 7,907 — (15 ) 7,892 8,931 — (3 ) 8,928 Asset-backed securities and other 100 — — 100 — — — — $ 85,664 $ — $ (178 ) $ 85,486 $ 73,659 $ — $ (99 ) $ 73,560 Long-term investments: U.S. treasuries $ 3,726 $ — $ (169 ) $ 3,557 $ 18,111 $ 7 $ (164 ) $ 17,954 U.S. government sponsored entities 1,663 — (73 ) 1,590 5,306 — (62 ) 5,244 Corporate debt securities 20,614 — (513 ) 20,101 22,505 268 (54 ) 22,719 Asset-backed securities and other 6,721 5 (57 ) 6,669 6,180 17 (15 ) 6,182 $ 32,724 $ 5 $ (812 ) $ 31,917 $ 52,102 $ 292 $ (295 ) $ 52,099
Amortized Cost and Fair Value of Investments in Available for Sale Securities	The amortized cost and fair value of the Company’s investments in available-for-sale June 30, 2018 December 31, 2017 Unrealized Fair Unrealized Fair Less than 12 months $ (721 ) $ 95,835 $ (158 ) $ 63,229 12 months or longer $ (269 ) $ 19,988 $ (236 ) $ 44,961
Gross Realized Gains and Losses from Sale of Available for Sale Securities	Gross realized gains and gross realized losses from the sales of the Company’s available-for-sale Three Months Six Months 2018 2017 2018 2017 Gross realized gains (1) $ 12 $ 1 $ 12 $ 1 Gross realized losses (1) $ — $ — $ — $ — (1) Recorded in other income (expense), net in the condensed consolidated statements of net and comprehensive income. The cost basis of securities sold were determined based on the specific identification method.
Schedule of Amortized Cost and Fair Value of Marketable Securities, Available-for-Sale, by Contractual Maturity	Amortized cost and fair value of marketable securities, available-for-sale, June 30, 2018 December 31, 2017 Amortized Fair Amortized Fair Due in one year or less $ 85,664 $ 85,486 $ 73,659 $ 73,560 Due after one year through five years 11,217 11,087 30,644 30,517 Due after five years through ten years 15,648 15,125 15,090 15,200 Due after ten years 5,859 5,705 6,368 6,382 $ 118,388 $ 117,403 $ 125,761 $ 125,659 Weighted average contractual maturity 2.5 years 2.6 years

Notes Payable to Former Stock27

Notes Payable to Former Stockholders (Tables)	6 Months Ended
	Jun. 30, 2018
Payables and Accruals [Abstract]
Schedule of Accounts Payable and Other Liabilities Pertaining to Notes	Accrued interest included in accounts payable and other liabilities in the accompanying condensed consolidated balance sheets pertaining to the Notes consisted of the following (in thousands): June 30, December 31, Accrued interest $ 78 $ 305
Schedule of Interest Expense Pertaining to Notes	Interest expense pertaining to the Notes consisted of the following (in thousands): Three Months Six Months 2018 2017 2018 2017 Interest expense $ 102 $ 113 $ 211 $ 235

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of Assets at Fair Value on Recurring Basis	Assets carried at fair value are categorized into one of the three categories described above and consisted of the following (in thousands): June 30, 2018 December 31, 2017 Fair Value Level 1 Level 2 Level 3 Fair Value Level 1 Level 2 Level 3 Assets held in rabbi trust $ 8,890 $ — $ 8,890 $ — $ 8,787 $ — $ 8,787 $ — Cash equivalents (1) Commercial paper $ 14,824 $ — $ 14,824 $ — $ 11,441 $ — $ 11,441 $ — Money market funds 186,412 186,412 — — 157,788 157,788 — — $ 201,236 $ 186,412 $ 14,824 $ — $ 169,229 $ 157,788 $ 11,441 $ — Marketable securities, available-for-sale: Short-term investments: U.S. treasuries $ 74,011 $ 74,011 $ — $ — $ 57,624 $ 57,624 $ — $ — U.S. government sponsored entities 3,483 — 3,483 — 7,008 — 7,008 — Corporate debt securities 7,892 — 7,892 — 8,928 — 8,928 — Asset-backed securities and other 100 — 100 — — — — — $ 85,486 $ 74,011 $ 11,475 $ — $ 73,560 $ 57,624 $ 15,936 $ — Long-term investments: U.S. treasuries $ 3,557 $ 3,557 $ — $ — $ 17,954 $ 17,954 $ — $ — U.S. government sponsored entities 1,590 — 1,590 — 5,244 — 5,244 — Corporate debt securities 20,101 — 20,101 — 22,719 — 22,719 — Asset-backed securities and other 6,669 — 6,669 — 6,182 — 6,182 — $ 31,917 $ 3,557 $ 28,360 $ — $ 52,099 $ 17,954 $ 34,145 $ — (1) Included in cash and cash equivalents on the accompanying condensed consolidated balance sheet.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2018
Federal Home Loan Banks [Abstract]
Changes in Accumulated Other Comprehensive Income, Net of Income Taxes	The components of accumulated other comprehensive income as of June 30, 2018, by component, net of income taxes consisted of the following (in thousands): Unrealized gains available-for-sale Foreign (3) Total Beginning balance, December 31, 2017 $ (62 ) $ 1,002 $ 940 Cumulative effect of change in accounting principle (1) (13 ) — (13 ) Balance at January 1, 2018, as adjusted (75 ) 1,002 927 Other comprehensive (loss) income before reclassifications (664 ) 73 (591 ) Amounts reclassified from accumulated other comprehensive (loss) income (2) 8 — 8 Net current-period other comprehensive (loss) income (656 ) 73 (583 ) Ending balance, June 30, 2018 $ (731 ) $ 1,075 $ 344 (1) Relates to reclassification of stranded tax effects from accumulated other comprehensive income to retained earnings as a result of adoption of ASU 2018-02. (2) Included as a component of other income (expense), net in the condensed consolidated statements of net and comprehensive income. The reclassifications were determined on a specific identification basis. (3) The Company has not provided for U.S. taxes on unremitted earnings of its foreign subsidiary as it is operating at a loss and has no earnings and profits to remit. As a result, deferred taxes were not provided related to the cumulative foreign currency translation adjustments.

Stock-Based Compensation Plans

Stock-Based Compensation Plans (Tables)	6 Months Ended
	Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Outstanding Awards Under 2013 Omnibus Equity Incentive Plan	Activity under the 2013 Plan consisted of the following (dollars in thousands, except per share data): RSA Non-employee RSU RSU Total Weighted- Nonvested shares at December 31, 2017 30,732 500,859 450,264 981,855 $ 23.90 Granted February 2018 — 106,419 20,293 126,712 March 2018 — 15,000 — 15,000 May 2018 12,852 4,854 14,280 31,986 Total Granted 12,852 126,273 34,573 173,698 32.90 Vested (12,936 ) (138,229 ) (136,511 ) (287,676 ) 21.13 Transferred — — — — — Forfeited/canceled — (1,960 ) (4,598 ) (6,558 ) 29.21 Nonvested shares at June 30, 2018 (1) 30,648 486,943 343,728 861,319 $ 26.60 Unrecognized stock-based compensation expense as of June 30, 2018 (2) $ 708 $ 11,743 $ 9,798 $ 22,249 Weighted average remaining vesting period (years) as of June 30, 2018 1.14 3.38 2.77 3.04 (1) Nonvested RSUs will be settled through the issuance of new shares of common stock. (2) The total unrecognized compensation expense is expected to be recognized over a weighted-average period of approximately 3.04 years.
Schedule of Future Share Settlements	Future share settlements of DSUs by year consisted of the following: June 30, 2018 237,052 2021 60,373 2022 281,193 578,618
Stock-Based Compensation Expense	Components of stock-based compensation are included in selling, general and administrative expense in the condensed consolidated statements of net and comprehensive income consisted of the following (in thousands, except common stock price): Three Months Six Months 2018 2017 2018 2017 Employee stock purchase plan $ 24 $ 29 $ 63 $ 75 RSAs – non-employee 165 90 276 179 RSUs – employees 1,096 952 2,049 1,866 RSUs – independent contractors (1) 1,874 1,044 3,384 1,861 $ 3,159 $ 2,115 $ 5,772 $ 3,981 Common stock price at beginning of period $ 36.06 $ 24.58 $ 32.61 $ 26.72 Common stock price at end of period $ 39.01 $ 26.36 $ 39.01 $ 26.36 Increase (decrease) in stock price $ 2.95 $ 1.78 $ 6.40 $ (0.36 ) (1) The Company grants RSUs to independent contractors (i.e. investment sales and financing professionals), who are considered non-employees

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Components of Provision for Income Taxes and Income before Provision for Income Taxes	The provision for income taxes differs from the amount computed by applying the U.S. federal statutory rate to income before provision for income taxes and consisted of the following (in thousands): Three Months Ended June 30, 2018 2017 Amount Rate Amount Rate Income tax expense at the federal statutory rate $ 6,368 21.0 % $ 8,967 35.0 % State income tax expense, net of federal benefit 1,415 4.7 % 973 3.8 % Effect of foreign operations (12 ) 0.0 % 25 0.1 % Windfall tax benefits, net related to stock-based compensation (28 ) (0.1 )% — — Change in valuation allowance 74 0.2 % 62 0.2 % Permanent items and other 338 1.1 % 25 0.1 % $ 8,155 26.9 % $ 10,052 39.2 % Six Months Ended June 30, 2018 2017 Amount Rate Amount Rate Income tax expense at the federal statutory rate $ 11,474 21.0 % $ 15,793 35.0 % State income tax expense, net of federal benefit 2,511 4.6 % 1,741 3.9 % Effect of foreign operations (20 ) 0.0 % 47 0.1 % Windfall tax benefits, net related to stock-based compensation (245 ) (0.5 )% (156 ) (0.4 )% Change in valuation allowance 121 0.2 % 116 0.3 % Permanent items and other 616 1.1 % 13 — $ 14,457 26.4 % $ 17,554 38.9 %

Earnings per Share (Tables)

Earnings per Share (Tables)	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share, Including Antidilutive Securities Excluded from Computation of Earnings Per Share	Basic and diluted earnings per share for the three and six months ended June 30, 2018 and 2017, respectively consisted of the following (in thousands, except per share data): Three Months Ended Six Months Ended 2018 2017 2018 2017 Numerator (Basic and Diluted): Net income $ 22,167 $ 15,569 $ 40,178 $ 27,569 Denominator: Basic Weighted average common shares issued and outstanding 38,606 38,100 38,576 38,075 Deduct: Unvested RSAs (1) (31 ) (28 ) (31 ) (29 ) Add: Fully vested DSUs (2) 579 930 579 930 Weighted Average Common Shares Outstanding 39,154 39,002 39,124 38,976 Basic earnings per common share $ 0.57 $ 0.40 $ 1.03 $ 0.71 Diluted Weighted Average Common Shares Outstanding from above 39,154 39,002 39,124 38,976 Add: Dilutive effect of RSUs, RSAs & ESPP 231 130 174 142 Weighted Average Common Shares Outstanding 39,385 39,132 39,298 39,118 Diluted earnings per common share $ 0.56 $ 0.40 $ 1.02 $ 0.70 Antidilutive shares excluded from diluted earnings per common share (3) 55 317 242 324 (1) RSAs were issued and outstanding to the non-employee one-year (2) Shares are included in weighted average common shares outstanding as the shares are fully vested but have not yet been delivered. See Note 11 – “Stock-Based Compensation Plans” for additional information. (3) Primarily pertaining to RSU grants to the Company’s employees and independent contractors.

Description of Business and B33

Description of Business and Basis of Presentation - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2018Office
Class of Stock [Line Items]
Number of offices in the United States and Canada	78
Formation date	2013-06
Percentage of common stock distributed	80.00%
IPO MMI [Member]
Class of Stock [Line Items]
IPO completion date	Oct. 30, 2013

Accounting Policies and Recen34

Accounting Policies and Recent Accounting Pronouncements - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2018USD ($)Office	Jun. 30, 2017Office	Jun. 30, 2018USD ($)OfficeSegment	Jun. 30, 2017Office	Dec. 31, 2017USD ($)
Accounting Policies [Line Items]
Commission's receivable settled period	10 days
Number of reporting units | Segment			1
Finite-lived intangible asset, amortization method			Straight-line
Marketable securities, available for sale	$ 117,403,000		$ 117,403,000		$ 125,659,000
Accounting Standards Update 2018-02 [Member]
Accounting Policies [Line Items]
Reclassification of stranded tax effects from accumulated other comprehensive income to retained earnings			13,000
Accounting Standards Update 2016-02 [Member]
Accounting Policies [Line Items]
Operating lease obligations	$ 88,300,000		$ 88,300,000
Customer Concentration Risk [Member] | Total revenues [Member]
Accounting Policies [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%	10.00%
Customer Concentration Risk [Member] | Commissions receivable [Member]
Accounting Policies [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%	10.00%
Geographic Concentration Risk [Member] | Total revenues [Member]
Accounting Policies [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%	10.00%
Number of offices | Office	0	0	0	0
Maximum [Member]
Accounting Policies [Line Items]
Finite-lived intangible asset, useful life			6 years
Minimum [Member]
Accounting Policies [Line Items]
Finite-lived intangible asset, useful life			1 year
Capitalization of Internal Labor [Member] | Maximum [Member]
Accounting Policies [Line Items]
Property and equipment, estimated useful life			7 years
Capitalization of Internal Labor [Member] | Minimum [Member]
Accounting Policies [Line Items]
Property and equipment, estimated useful life			3 years
Average AA Credit Rating [Member] | Accounting Standards Update 2016-13 [Member]
Accounting Policies [Line Items]
Marketable securities, available for sale	$ 117,400,000		$ 117,400,000
Impairment write-downs marketable securities, available for sale			$ 0
International Revenues [Member] | Maximum [Member] | Geographic Concentration Risk [Member] | Total revenues [Member]
Accounting Policies [Line Items]
Concentration risk percentage	1.00%	1.00%	1.00%	1.00%

Acquisition - Additional Inform

Acquisition - Additional Information (Detail) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018USD ($)Acquisition	Jun. 30, 2018USD ($)Segment	Jun. 30, 2017USD ($)	Dec. 31, 2017USD ($)	Jan. 01, 2017USD ($)
Business Acquisition [Line Items]
Contingent consideration	$ 1,700	$ 1,700
Cash consideration	$ 6,216	6,216	$ 0
Number of acquisition | Acquisition	2
Mortgage servicing assets, net	$ 2,000	2,000
Mortgage servicing assets	2,100	2,100
Mortgage servicing liabilities	100	100
Fair values of intangible assets	1,541	1,541	$ 0	$ 0	$ 0
Acquired working capital	100	100
Goodwill	$ 4,186	$ 4,186		$ 0
Number of reporting units | Segment		1
Cash payment related to contingent consideration		$ 0
Minimum [Member]
Business Acquisition [Line Items]
Contingent consideration period	3 years
Maximum [Member]
Business Acquisition [Line Items]
Contingent consideration period	5 years

Acquisition - Summary of Goodwi

Acquisition - Summary of Goodwill and Other Intangible Assets (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Jan. 01, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 4,186	$ 0
Other intangible assets, net of amortization	1,541	0	$ 0	$ 0
Total intangible assets	$ 5,727	$ 0

Acquisition - Summary of Net Ch

Acquisition - Summary of Net Change in Carrying Value of Other Intangible Assets (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Beginning balance	$ 0	$ 0
Additions from acquisition	1,571	0
Amortization	(30)	0
Ending balance	$ 1,541	$ 0

Property and Equipment - Schedu

Property and Equipment - Schedule of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Less: accumulated depreciation and amortization	$ (22,757)	$ (20,789)
Property and equipment, net	17,159	17,153
Computer software and hardware equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	17,172	16,247
Furniture, fixtures, and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 22,744	$ 21,695

Property and Equipment - Additi

Property and Equipment - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Property, Plant and Equipment [Abstract]
Fully depreciated computer software and hardware and furniture, fixtures and equipment write-off	$ 0.8	$ 1.1

Selected Balance Sheet Data - S

Selected Balance Sheet Data - Schedule of Other Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Other Assets [Line Items]
Other assets Current	$ 4,918	$ 5,529
Other assets Non-Current	29,250	23,163
Mortgage servicing rights, net of amortization [Member]
Other Assets [Line Items]
Other assets Current	0	0
Other assets Non-Current	2,121	0
Due from independent contractors, net [Member]
Other Assets [Line Items]
Other assets Current	2,989	3,672
Other assets Non-Current	25,780	21,726
Security deposits [Member]
Other Assets [Line Items]
Other assets Current	0	0
Other assets Non-Current	1,151	1,158
Employee Notes Receivable [Member]
Other Assets [Line Items]
Other assets Current	244	366
Other assets Non-Current	154	255
Customer trust accounts and other [Member]
Other Assets [Line Items]
Other assets Current	1,685	1,491
Other assets Non-Current	$ 44	$ 24

Selected Balance Sheet Data -41

Selected Balance Sheet Data - Schedule of Other Assets (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Other Assets [Line Items]
Allowance of doubtful accounts	$ 409		$ 409		$ 494
(Recovery) provision for bad debt expense	77	$ (10)	(29)	$ (54)
Write-off receivables	$ 4	$ (6)	$ 55	$ 10
Minimum [Member]
Other Assets [Line Items]
Notes receivable due period			1 year
Maximum [Member]
Other Assets [Line Items]
Notes receivable due period			5 years

Selected Balance Sheet Data -42

Selected Balance Sheet Data - Summary of Net Change in Carrying Value of MSRs (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Beginning balance	$ 0	$ 0
Additions from acquisition	2,121	0
Additions	41	0
Amortization	(41)	0
Ending balance	$ 2,121	$ 0

Selected Balance Sheet Data - C

Selected Balance Sheet Data - Components of Deferred Compensation and Commissions (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Stock appreciation rights ("SARs") liability	$ 1,895	$ 1,662
Deferred compensation liability	1,505	1,261
Deferred compensation and commissions, current	34,107	49,180
Stock appreciation rights ("SARs") liability	18,931	20,217
Deferred compensation liability	7,709	7,220
Deferred compensation and commissions, non-current	41,557	49,361
Current [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Commissions payable to investment sales and financing professionals	30,707	46,257
Non-Current [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Commissions payable to investment sales and financing professionals	$ 14,917	$ 21,924

Selected Balance Sheet Data - A

Selected Balance Sheet Data - Additional Information (Detail)	Jan. 01, 2018	Jan. 01, 2017	Jan. 01, 2014	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2018USD ($)Installments	Jun. 30, 2017USD ($)	Dec. 31, 2017USD ($)	Mar. 31, 2013USD ($)
Schedule Of Accrued Expenses [Line Items]
SARs frozen liability amount				$ 18,931,000		$ 18,931,000		$ 20,217,000
Interest expense				352,000	$ 374,000	$ 712,000	$ 756,000
Maximum payment deferral period for certain commissions payable						3 years
SARs [Member]
Schedule Of Accrued Expenses [Line Items]
SARs frozen liability amount									$ 20,000,000
SARs liability frozen value date						Mar. 31, 2013
SARs liability interest accrual commencement date						Jan. 1, 2014
Interest expense				$ 224,000	$ 233,000	$ 449,000	$ 466,000
Treasury note term			10 years
Base spread on SARs liability variable rate			2.00%
SARs liability interest accrual rates	4.409%	4.446%
SARs liability number of annual installments | Installments						10
Estimated payouts description						Estimated payouts within the next twelve months for participants that have separated from service have been classified as current.
Payments made during the period						$ 1,500,000
Deferred Compensation Liability [Member]
Schedule Of Accrued Expenses [Line Items]
Estimated payouts description						Estimated payouts within the next twelve months for participants that have separated from service have been classified as current.
Payments made during the period						$ 387,000
Deferred Compensation Liability, Minimum Payout Period						2 years
Deferred Compensation Liability, Maximum Payout Period						15 years
Fair value of deferred compensation plan assets						110.00%

Selected Balance Sheet Data -45

Selected Balance Sheet Data - Summary of Net Change in Carrying Value of Assets Held in Rabbi Trust and Deferred Compensation Liability (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Balance Sheet Related Disclosures [Abstract]
Increase in the carrying value of the assets held in the rabbi trust	$ 176	$ 170	$ 190	$ 369
Increase in the net carrying value of the deferred compensation obligation	$ 188	$ 188	$ 188	$ 399

Investments in Marketable Sec46

Investments in Marketable Securities - Schedule of Amortized Cost and Fair Value of Marketable Securities, Available-for-Sale, by Type of Security (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 118,388	$ 125,761
Fair Value	117,403	125,659
Short-term investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	85,664	73,659
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(178)	(99)
Fair Value	85,486	73,560
Short-term investments [Member] | U.S. Treasuries [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	74,147	57,712
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(136)	(88)
Fair Value	74,011	57,624
Short-term investments [Member] | U.S. Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,510	7,016
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(27)	(8)
Fair Value	3,483	7,008
Short-term investments [Member] | Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	7,907	8,931
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(15)	(3)
Fair Value	7,892	8,928
Short-term investments [Member] | Asset-backed securities and other [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	100	0
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	100	0
Long-term marketable securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	32,724	52,102
Gross Unrealized Gains	5	292
Gross Unrealized Losses	(812)	(295)
Fair Value	31,917	52,099
Long-term marketable securities [Member] | U.S. Treasuries [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,726	18,111
Gross Unrealized Gains	0	7
Gross Unrealized Losses	(169)	(164)
Fair Value	3,557	17,954
Long-term marketable securities [Member] | U.S. Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,663	5,306
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(73)	(62)
Fair Value	1,590	5,244
Long-term marketable securities [Member] | Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	20,614	22,505
Gross Unrealized Gains	0	268
Gross Unrealized Losses	(513)	(54)
Fair Value	20,101	22,719
Long-term marketable securities [Member] | Asset-backed securities and other [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	6,721	6,180
Gross Unrealized Gains	5	17
Gross Unrealized Losses	(57)	(15)
Fair Value	$ 6,669	$ 6,182

Investments in Marketable Sec47

Investments in Marketable Securities - Amortized Cost and Fair Value of Investments in Available for Sale Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available for sale securities continuous unrealized loss position for less than 12 months, unrealized loss	$ (721)	$ (158)
Available for sale securities continuous unrealized loss position for 12 months or longer, unrealized loss	(269)	(236)
Available for sale securities continuous unrealized loss position for less than 12 months, fair value	95,835	63,229
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value	$ 19,988	$ 44,961

Investments in Marketable Sec48

Investments in Marketable Securities - Gross Realized Gains and Losses from Sale of Available for Sale Securities (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Gross realized gains	$ 12	$ 1	$ 12	$ 1
Gross realized losses	$ 0	$ 0	$ 0	$ 0

Investments in Marketable Sec49

Investments in Marketable Securities - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2018USD ($)
Marketable Securities [Abstract]
Investments other-than-temporarily impaired	$ 0

Investments in Marketable Sec50

Investments in Marketable Securities - Schedule of Amortized Cost and Fair Value of Marketable Securities, Available-for-Sale, by Contractual Maturity (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$ 85,664	$ 73,659
Due after one year through five years, Amortized Cost	11,217	30,644
Due after five years through ten years, Amortized Cost	15,648	15,090
Due after ten years, Amortized Cost	5,859	6,368
Amortized Cost	118,388	125,761
Due in one year or less, Fair Value	85,486	73,560
Due after one year through five years, Fair Value	11,087	30,517
Due after five years through ten years, Fair Value	15,125	15,200
Due after ten years, Fair Value	5,705	6,382
Total Fair Value	$ 117,403	$ 125,659
Weighted average contractual maturity	2 years 6 months	2 years 7 months 6 days

Notes Payable to Former Stock51

Notes Payable to Former Stockholders - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Restricted Stock - Notes Payable [Member]
Debt Instrument [Line Items]
Unsecured notes interest rate	5.00%
Unsecured notes maturity date	Jun. 30, 2020
SARs - Notes Payable [Member]
Debt Instrument [Line Items]
Unsecured notes interest rate	5.00%
Unsecured notes maturity date	Jun. 30, 2020
Notes Payable to Former Stockholders [Member]
Debt Instrument [Line Items]
Principal and interest payments on notes payable to former stockholders	$ 1.5	$ 1.5

Notes Payable to Former Stock52

Notes Payable to Former Stockholders - Schedule of Accounts Payable and Other Liabilities Pertaining to Notes (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Accounts Payable and Accrued Expenses [Member]
Accounts Payable And Accrued Expenses [Line Items]
Accrued interest	$ 78	$ 305

Notes Payable to Former Stock53

Notes Payable to Former Stockholders - Schedule of Interest Expense Pertaining to Notes (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest Expense [Line Items]
Interest expense	$ 352	$ 374	$ 712	$ 756
Notes Payable to Former Stockholders [Member]
Interest Expense [Line Items]
Interest expense	$ 102	$ 113	$ 211	$ 235

Related-Party Transactions - Ad

Related-Party Transactions - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Related Party Transaction [Line Items]
Aggregate principal amount for employee notes receivable	$ 398,000		$ 398,000		$ 621,000
MMC [Member]
Related Party Transaction [Line Items]
Real estate brokerage commissions and financing fees from transactions with subsidiaries of Marcus & Millichap Company	560,000	$ 120,000	3,100,000	$ 323,000
Commission expenses for transactions with subsidiaries of Marcus & Millichap Company	321,000	65,000	1,800,000	187,000
Rent expense for lease	255,000	253,000	$ 508,000	506,000
Lease expiration date			May 31, 2022
Accounts payable and other liabilities - related party	105,000		$ 105,000		$ 91,000
MMC [Member] | Transition Services Agreement [Member]
Related Party Transaction [Line Items]
Selling, general and administrative expense	$ 55,000	$ 43,000	$ 127,000	$ 125,000
Transition services agreement date			Oct. 1, 2013
George M. Marcus [Member]
Related Party Transaction [Line Items]
Beneficial ownership percentage			44.00%

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Assets at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held in rabbi trust	$ 8,890	$ 8,787
Marketable securities, available for sale	117,403	125,659
Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	85,486	73,560
Short-term investments [Member] | U.S. Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	74,011	57,624
Short-term investments [Member] | U.S. Government Sponsored Entities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	3,483	7,008
Short-term investments [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	7,892	8,928
Short-term investments [Member] | Asset-backed securities and other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	100	0
Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	31,917	52,099
Long-term marketable securities [Member] | U.S. Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	3,557	17,954
Long-term marketable securities [Member] | U.S. Government Sponsored Entities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	1,590	5,244
Long-term marketable securities [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	20,101	22,719
Long-term marketable securities [Member] | Asset-backed securities and other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	6,669	6,182
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	201,236	169,229
Recurring [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	14,824	11,441
Recurring [Member] | Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	186,412	157,788
Recurring [Member] | Assets held in rabbi trust [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held in rabbi trust	8,890	8,787
Recurring [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	85,486	73,560
Recurring [Member] | Short-term investments [Member] | U.S. Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	74,011	57,624
Recurring [Member] | Short-term investments [Member] | U.S. Government Sponsored Entities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	3,483	7,008
Recurring [Member] | Short-term investments [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	7,892	8,928
Recurring [Member] | Short-term investments [Member] | Asset-backed securities and other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	100	0
Recurring [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	31,917	52,099
Recurring [Member] | Long-term marketable securities [Member] | U.S. Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	3,557	17,954
Recurring [Member] | Long-term marketable securities [Member] | U.S. Government Sponsored Entities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	1,590	5,244
Recurring [Member] | Long-term marketable securities [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	20,101	22,719
Recurring [Member] | Long-term marketable securities [Member] | Asset-backed securities and other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	6,669	6,182
Level 1 [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	186,412	157,788
Level 1 [Member] | Recurring [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Level 1 [Member] | Recurring [Member] | Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	186,412	157,788
Level 1 [Member] | Recurring [Member] | Assets held in rabbi trust [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held in rabbi trust	0	0
Level 1 [Member] | Recurring [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	74,011	57,624
Level 1 [Member] | Recurring [Member] | Short-term investments [Member] | U.S. Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	74,011	57,624
Level 1 [Member] | Recurring [Member] | Short-term investments [Member] | U.S. Government Sponsored Entities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 1 [Member] | Recurring [Member] | Short-term investments [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 1 [Member] | Recurring [Member] | Short-term investments [Member] | Asset-backed securities and other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 1 [Member] | Recurring [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	3,557	17,954
Level 1 [Member] | Recurring [Member] | Long-term marketable securities [Member] | U.S. Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	3,557	17,954
Level 1 [Member] | Recurring [Member] | Long-term marketable securities [Member] | U.S. Government Sponsored Entities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 1 [Member] | Recurring [Member] | Long-term marketable securities [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 1 [Member] | Recurring [Member] | Long-term marketable securities [Member] | Asset-backed securities and other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 2 [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	14,824	11,441
Level 2 [Member] | Recurring [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	14,824	11,441
Level 2 [Member] | Recurring [Member] | Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Level 2 [Member] | Recurring [Member] | Assets held in rabbi trust [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held in rabbi trust	8,890	8,787
Level 2 [Member] | Recurring [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	11,475	15,936
Level 2 [Member] | Recurring [Member] | Short-term investments [Member] | U.S. Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 2 [Member] | Recurring [Member] | Short-term investments [Member] | U.S. Government Sponsored Entities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	3,483	7,008
Level 2 [Member] | Recurring [Member] | Short-term investments [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	7,892	8,928
Level 2 [Member] | Recurring [Member] | Short-term investments [Member] | Asset-backed securities and other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	100	0
Level 2 [Member] | Recurring [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	28,360	34,145
Level 2 [Member] | Recurring [Member] | Long-term marketable securities [Member] | U.S. Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 2 [Member] | Recurring [Member] | Long-term marketable securities [Member] | U.S. Government Sponsored Entities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	1,590	5,244
Level 2 [Member] | Recurring [Member] | Long-term marketable securities [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	20,101	22,719
Level 2 [Member] | Recurring [Member] | Long-term marketable securities [Member] | Asset-backed securities and other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	6,669	6,182
Level 3 [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Level 3 [Member] | Recurring [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Level 3 [Member] | Recurring [Member] | Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Level 3 [Member] | Recurring [Member] | Assets held in rabbi trust [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held in rabbi trust	0	0
Level 3 [Member] | Recurring [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 3 [Member] | Recurring [Member] | Short-term investments [Member] | U.S. Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 3 [Member] | Recurring [Member] | Short-term investments [Member] | U.S. Government Sponsored Entities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 3 [Member] | Recurring [Member] | Short-term investments [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 3 [Member] | Recurring [Member] | Short-term investments [Member] | Asset-backed securities and other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 3 [Member] | Recurring [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 3 [Member] | Recurring [Member] | Long-term marketable securities [Member] | U.S. Treasuries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 3 [Member] | Recurring [Member] | Long-term marketable securities [Member] | U.S. Government Sponsored Entities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 3 [Member] | Recurring [Member] | Long-term marketable securities [Member] | Corporate debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	0	0
Level 3 [Member] | Recurring [Member] | Long-term marketable securities [Member] | Asset-backed securities and other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	$ 0	$ 0

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail)	Jun. 30, 2018USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of the contingent consideration	$ 1,700,000
Fair value, assets, level 1 to level 2 transfers, amount	0
Fair value, assets, level 2 to level 1 transfers, amount	0
Level 3 [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of the contingent consideration	$ 1,700,000

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
Equity [Abstract]
Common stock, shares issued	38,621,712	38,374,011
Common stock, shares outstanding	38,621,712	38,374,011
Common stock share, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	25,000,000	25,000,000
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0

Stockholders' Equity - Changes

Stockholders' Equity - Changes in Accumulated Other Comprehensive Income, Net of Income Taxes (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 314,888
Balance as adjusted	314,888
Ending Balance	358,897
Unrealized gains and (losses) of available-for-sale securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as adjusted	(75)
Other comprehensive (loss) income before reclassifications	(664)
Amounts reclassified from accumulated other comprehensive (loss) income	8
Net current-period other comprehensive (loss) income	(656)
Ending Balance	(731)
Unrealized gains and (losses) of available-for-sale securities [Member] | Previously Reported [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(62)
Unrealized gains and (losses) of available-for-sale securities [Member] | Scenario, Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of change in accounting principle	(13)
Foreign currency translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as adjusted	1,002
Other comprehensive (loss) income before reclassifications	73
Amounts reclassified from accumulated other comprehensive (loss) income	0
Net current-period other comprehensive (loss) income	73
Ending Balance	1,075
Foreign currency translation [Member] | Previously Reported [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	1,002
Foreign currency translation [Member] | Scenario, Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of change in accounting principle	0
Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	940
Balance as adjusted	927
Other comprehensive (loss) income before reclassifications	(591)
Amounts reclassified from accumulated other comprehensive (loss) income	8
Net current-period other comprehensive (loss) income	(583)
Ending Balance	344
Accumulated Other Comprehensive Income [Member] | Previously Reported [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	940
Accumulated Other Comprehensive Income [Member] | Scenario, Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect of change in accounting principle	$ (13)

Stockholders' Equity - Change59

Stockholders' Equity - Changes in Accumulated Other Comprehensive Income, Net of Income Taxes (Parenthetical) (Detail)	Jun. 30, 2018USD ($)
Equity [Abstract]
Undistributed earnings of foreign subsidiary	$ 0

Stock-Based Compensation Plan60

Stock-Based Compensation Plans - 2013 Omnibus Equity Incentive Plan - Award Limitations - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2018Incentive_Planshares
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Common stock shares reserved for issuance of awards	5,500,000
Common stock shares available for grant	5,472,696
Increase of common stock share reserve approved	3,300,000
Number of active equity plans | Incentive_Plan	1
Equity incentive plan amendment, shareholder approval date	May 4, 2017
Equity incentive plan amendment, board of directors approval date	2017-02

Stock-Based Compensation Plan61

Stock-Based Compensation Plans - 2013 Omnibus Equity Incentive Plan - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2018shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested shares	287,676
2013 Omnibus Equity Incentive Plan [Member] | Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued under compensation plan	0
Number of shares outstanding under compensation plan	0
2013 Omnibus Equity Incentive Plan [Member] | Deferred stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fully vested deferred stock units remaining outstanding	578,618
2013 Omnibus Equity Incentive Plan [Member] | Restricted Stock Awards [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
2013 Omnibus Equity Incentive Plan [Member] | Restricted Stock Awards [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
2013 Omnibus Equity Incentive Plan [Member] | Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
Vested shares	274,740
Number of common stock shares withheld to pay employee statutory withholding taxes	52,919
Vested and delivered shares	274,740
2013 Omnibus Equity Incentive Plan [Member] | SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued under compensation plan	0
Number of shares outstanding under compensation plan	0
2013 Omnibus Equity Incentive Plan [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued under compensation plan	0
Number of shares outstanding under compensation plan	0
2013 Omnibus Equity Incentive Plan [Member] | Performance Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued under compensation plan	0
Number of shares outstanding under compensation plan	0

Stock-Based Compensation Plan62

Stock-Based Compensation Plans - Outstanding Awards Under 2013 Omnibus Equity Incentive Plan (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended			6 Months Ended
	May 31, 2018	Mar. 31, 2018	Feb. 28, 2018	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares at December 31, 2017				981,855
Granted	31,986	15,000	126,712	173,698
Vested				(287,676)
Transferred				0
Forfeited/canceled				(6,558)
Nonvested shares at June 30, 2018				861,319
Unrecognized stock-based compensation expense as of June 30, 2018				$ 22,249
Unrecognized stock-based compensation expenses recognition period				3 years 15 days
Nonvested weighted average grant date fair value per share, beginning balance				$ 23.90
Weighted average grant date fair value per share, Granted				32.90
Weighted average grant date fair value, Vested				21.13
Weighted average grant date fair value, Transferred				0
Weighted average grant date fair value, Forfeited/canceled				29.21
Nonvested weighted average grant date fair value per share, ending balance				$ 26.60
Restricted Stock Awards [Member] | Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares at December 31, 2017				30,732
Granted	12,852	0	0	12,852
Vested				(12,936)
Transferred				0
Forfeited/canceled				0
Nonvested shares at June 30, 2018				30,648
Unrecognized stock-based compensation expense as of June 30, 2018				$ 708
Unrecognized stock-based compensation expenses recognition period				1 year 1 month 20 days
Restricted Stock Units [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares at December 31, 2017				500,859
Granted	4,854	15,000	106,419	126,273
Vested				(138,229)
Transferred				0
Forfeited/canceled				(1,960)
Nonvested shares at June 30, 2018				486,943
Unrecognized stock-based compensation expense as of June 30, 2018				$ 11,743
Unrecognized stock-based compensation expenses recognition period				3 years 4 months 17 days
Restricted Stock Units [Member] | Independent Contractors [member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares at December 31, 2017				450,264
Granted	14,280	0	20,293	34,573
Vested				(136,511)
Transferred				0
Forfeited/canceled				(4,598)
Nonvested shares at June 30, 2018				343,728
Unrecognized stock-based compensation expense as of June 30, 2018				$ 9,798
Unrecognized stock-based compensation expenses recognition period				2 years 9 months 7 days

Stock-Based Compensation Plan63

Stock-Based Compensation Plans - Schedule of Future Share Settlements (Detail) - 2013 Omnibus Equity Incentive Plan [Member] - Deferred stock units [Member]	Jun. 30, 2018shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2,018	237,052
2,021	60,373
2,022	281,193
Total	578,618

Stock-Based Compensation Plan64

Stock-Based Compensation Plans - Employee Stock Purchase Plan - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares available for issuance	5,472,696
Unrecognized stock-based compensation expense	$ 22,249,000
Unrecognized stock-based compensation expenses recognition period	3 years 15 days
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ESPP offering period description	The offering periods generally start on the first trading day on or after May 15 and November 15 of each year.
Length of purchase intervals	6 months
ESPP discount rate	10.00%
Common stock reserved and available for issuance	366,667
Common stock shares available for issuance	233,867	246,895
Unrecognized stock-based compensation expense	$ 55,000
Unrecognized stock-based compensation expenses recognition period	4 months 17 days
Employee Stock Purchase Plan - Annual Available for Issuance Share Increase [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for future issuance authorized annual share increase	366,667
Common stock available for future issuance authorized annual percentage increase	1.00%
ESPP description	The ESPP Plan provides for annual increases in the number of shares available for issuance under the ESPP, equal to the least of (i) 366,667 shares, (ii) 1% of the outstanding shares on such date, or (iii) an amount determined by the board. Pursuant to the provisions of the ESPP Plan, the board of directors determined a share reserve increase was not required in the prior years.

Stock-Based Compensation Plan65

Stock-Based Compensation Plans - Amendments to Restricted Stock and SARs - Additional Information (Detail) - shares	Oct. 30, 2013	Oct. 01, 2013	Jun. 30, 2018
Deferred stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee termination age	67 years
DSU settlement to common stock percentage	20.00%
DSU settlement into actual stock issued term	5 years
Percentage of shares of deferred stock units settled in the event of death or termination after reaching age 67	100.00%
Restricted Stock Sales Restriction [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sales restriction lapse percentage for restricted stock	20.00%
Employee termination age	67 years
Sales restriction period for restricted stock	5 years
Percentage of shares of stock released from resale restriction upon consummation of change of control	100.00%
Percentage of shares of restricted released from resale restriction in the event of death or termination after reaching age 67	100.00%
Number of original shares subject to resale restriction		3,689,326
Number of shares remain subject to sales restriction			732,020

Stock-Based Compensation Plan66

Stock-Based Compensation Plans - Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense - Independent contractors	$ 1,874	$ 1,044	$ 3,384	$ 1,861
Allocated share-based compensation expense	3,159	2,115	5,772	3,981
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	24	29	63	75
Restricted Stock Awards [Member] | Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	165	90	276	179
Restricted Stock Units [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 1,096	$ 952	$ 2,049	$ 1,866

Stock-Based Compensation Plan67

Stock-Based Compensation Plans - Changes in Company's Common Stock Price During Reporting Period (Detail) - Stock Based Compensation Expense [Member] - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock price at beginning of period	$ 36.06	$ 24.58	$ 32.61	$ 26.72
Common stock price at end of period	39.01	26.36	39.01	26.36
Increase (decrease) in stock price	$ 2.95	$ 1.78	$ 6.40	$ (0.36)

Income Taxes - Components of Pr

Income Taxes - Components of Provision for Income Taxes and Income before Provision for Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income tax expense at the federal statutory rate	$ 6,368	$ 8,967	$ 11,474	$ 15,793
State income tax expense, net of federal benefit	1,415	973	2,511	1,741
Effect of foreign operations	(12)	25	(20)	47
Windfall tax benefits, net related to stock-based compensation	(28)	0	(245)	(156)
Change in valuation allowance	74	62	121	116
Permanent items and other	338	25	616	13
Provision for income taxes, amount	$ 8,155	$ 10,052	$ 14,457	$ 17,554
Income tax expense at the federal statutory rate	21.00%	35.00%	21.00%	35.00%	35.00%
State income tax expense, net of federal benefit	4.70%	3.80%	4.60%	3.90%
Effect of foreign operations	0.00%	0.10%	0.00%	0.10%
Windfall tax benefits, net related to stock-based compensation	(0.10%)	0.00%	(0.50%)	(0.40%)
Change in valuation allowance	0.20%	0.20%	0.20%	0.30%
Permanent items and other	1.10%	0.10%	1.10%	0.00%
Provision for income taxes, rate	26.90%	39.20%	26.40%	38.90%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Tax computed at federal rate, percentage	21.00%	35.00%	21.00%	35.00%	35.00%
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Provisional Income Tax Expense					$ 11.6
Provision for income taxes, rate	26.90%	39.20%	26.40%	38.90%

Earnings per Share - Computatio

Earnings per Share - Computation of Basic and Diluted Earnings Per Share, Including Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Numerator (Basic and Diluted):
Net income	$ 22,167	$ 15,569	$ 40,178	$ 27,569
Denominator:
Weighted average common shares issued and outstanding	38,606	38,100	38,576	38,075
Deduct: Unvested RSAs	(31)	(28)	(31)	(29)
Add: Fully vested DSUs	579	930	579	930
Weighted Average Common Shares Outstanding	39,154	39,002	39,124	38,976
Basic earnings per common share	$ 0.57	$ 0.40	$ 1.03	$ 0.71
Weighted Average Common Shares Outstanding from above	39,154	39,002	39,124	38,976
Add: Dilutive effect of RSUs, RSAs & ESPP	231	130	174	142
Weighted Average Common Shares Outstanding	39,385	39,132	39,298	39,118
Diluted earnings per common share	$ 0.56	$ 0.40	$ 1.02	$ 0.70
Antidilutive shares excluded from diluted earnings per common share	55	317	242	324

Earnings per Share - Computat71

Earnings per Share - Computation of Basic and Diluted Earnings Per Share, Including Antidilutive Securities Excluded from Computation of Earnings Per Share (Parenthetical) (Detail) - Restricted Stock Awards [Member] - 2013 Omnibus Equity Incentive Plan [Member]	6 Months Ended
	Jun. 30, 2018
Minimum [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Vesting period	1 year
Maximum [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Vesting period	3 years

Commitments and Contingencies -

Commitments and Contingencies - Additional Information Credit Agreement (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Line of Credit Facility [Line Items]
Senior secured revolving credit facility maximum borrowing capacity	$ 60,000,000		$ 60,000,000
Revolving credit facility maturity date			Jun. 1, 2020
Date the Company entered into a Credit Agreement			Jun. 18, 2014
Credit agreement date			Jun. 1, 2014
Standby letters of credit borrowing capacity	10,000,000		$ 10,000,000
Standby letters of credit, utilized amount	$ 533,000		$ 533,000
Credit facility interest rate description			Credit Facility will bear interest, at the Company’s option, at either the (i) Base Rate (defined as the highest of (a) the Bank’s prime rate, (b) the Federal Funds Rate plus 1.5% and (c) one-month LIBOR plus 1.5%), or (ii) at a variable rate between 0.875% and 1.125% above LIBOR, based upon the total funded debt to EBITDA ratio.
LIBOR rate duration period			1 month
Credit agreement, unused capacity, commitment fee percentage	0.10%
Interest expense	$ 352,000	$ 374,000	$ 712,000	$ 756,000
Credit agreement, amount outstanding	0		$ 0		$ 0
Credit facility covenants			(i) an EBITDAR Coverage Ratio (as defined in the Credit Agreement) of not less than 1.25:1.0 as of each quarter end and (ii) total funded debt to EBITDA not greater than 2.0:1.0
Minimum EBITDAR coverage ratio			1.25%
Maximum Total Funded Debt to EBITDA ratio			2.00%
Credit agreement, pledge percentage			100.00%
Compliance description			As of June 30, 2018, the Company was in compliance with all financial and non-financial covenants.
LIBOR [Member]
Line of Credit Facility [Line Items]
Base spread on variable rate			1.50%
Federal Funds Rate [Member]
Line of Credit Facility [Line Items]
Base spread on variable rate			1.50%
Credit Agreement [Member]
Line of Credit Facility [Line Items]
Interest expense	$ 26,000	$ 28,000	$ 52,000	$ 55,000
Minimum [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Base spread on variable rate			0.875%
Maximum [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Base spread on variable rate			1.125%

Commitments and Contingencies73

Commitments and Contingencies - Additional Information Other (Detail) $ in Millions	Jun. 30, 2018USD ($)
Commitments and Contingencies Disclosure [Abstract]
Other commitment amount	$ 1.5