Marcus & Millichap (MMI) 10-K 16 Mar 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Mar. 05, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	MMI
Entity Registrant Name	Marcus & Millichap, Inc.
Entity Central Index Key	1,578,732
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		38,578,808
Entity Public Float			$ 458.8

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 220,786	$ 187,371
Commissions receivable	9,586	4,809
Prepaid expenses	9,661	8,094
Income tax receivable	1,308	1,182
Marketable securities, available-for-sale	73,560	27,454
Other assets, net	5,529	5,102
Total current assets	320,430	234,012
Prepaid rent	15,392	13,285
Property and equipment, net	17,153	16,355
Marketable securities, available-for-sale	52,099	77,475
Assets held in rabbi trust	8,787	7,337
Deferred tax assets, net	22,640	35,571
Other assets	23,163	9,981
Total assets	459,664	394,016
Current liabilities:
Accounts payable and accrued expenses	9,202	10,133
Notes payable to former stockholders	1,035	986
Deferred compensation and commissions	49,180	44,754
Accrued bonuses and other employee related expenses	23,842	22,303
Total current liabilities	83,259	78,176
Deferred compensation and commissions	49,361	44,455
Notes payable to former stockholders	7,651	8,686
Deferred rent and other liabilities	4,505	3,845
Total liabilities	144,776	135,162
Commitments and contingencies	0	0
Stockholders' equity:
Preferred stock, $0.0001 par value: Authorized shares - 25,000,000; issued and outstanding shares - none at December 31, 2017 and 2016, respectively	0	0
Common stock, $0.0001 par value: Authorized shares - 150,000,000; issued and outstanding shares - 38,374,011 and 37,882,266 at December 31, 2017 and 2016, respectively	4	4
Additional paid-in capital	89,877	85,445
Stock notes receivable from employees	(4)	(4)
Retained earnings	224,071	172,599
Accumulated other comprehensive income	940	810
Total stockholders' equity	314,888	258,854
Total liabilities and stockholders' equity	$ 459,664	$ 394,016

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
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	38,374,011	37,882,266
Common stock, shares outstanding	38,374,011	37,882,266

Consolidated Statements of Net

Consolidated Statements of Net and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues:
Real estate brokerage commissions	$ 649,393	$ 662,220	$ 632,574
Financing fees	49,653	43,444	42,558
Other revenues	20,654	11,786	13,923
Total revenues	719,700	717,450	689,055
Operating expenses:
Cost of services	446,557	444,768	423,389
Selling, general, and administrative expense	171,648	161,794	147,710
Depreciation and amortization expense	5,363	4,387	3,305
Total operating expenses	623,568	610,949	574,404
Operating income	96,132	106,501	114,651
Other income (expense), net	4,590	2,134	443
Interest expense	(1,496)	(1,533)	(1,726)
Income before provision for income taxes	99,226	107,102	113,368
Provision for income taxes	47,702	42,445	47,018
Net income	51,524	64,657	66,350
Other comprehensive income:
Unrealized gains (losses) on marketable securities, net of tax of $139, $197 and $(394) for the years ended December 31, 2017, 2016 and 2015, respectively	193	313	(592)
Foreign currency translation gain (loss), net of tax of $0, $0 and $(90) for the years ended December 31, 2017, 2016 and 2015, respectively	(63)	40	890
Net current-period other comprehensive income (loss)	130	353	298
Comprehensive income	$ 51,654	$ 65,010	$ 66,648
Earnings per share:
Basic	$ 1.32	$ 1.66	$ 1.71
Diluted	$ 1.32	$ 1.66	$ 1.69
Weighted average common shares outstanding:
Basic	38,988	38,899	38,848
Diluted	39,100	39,035	39,162

Consolidated Statements of Net5

Consolidated Statements of Net and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Unrealized gains (losses) on marketable securities, tax	$ 139	$ 197	$ (394)
Foreign currency translation gain (loss), tax	$ 0	$ 0	$ (90)

Consolidated Statement of Stock

Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Series A Redeemable Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Stock Notes Receivable From Employees [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income [Member]
Beginning Balance at Jan. 01, 2015	$ 116,809	$ 0	$ 4	$ 75,058	$ (4)	$ 41,592	$ 159
Beginning Balance, Shares at Jan. 01, 2015		0	36,918,442
Net and comprehensive income	66,648	$ 0	$ 0	0	0	66,350	298
Stock-based compensation	7,114	$ 0	$ 0	7,114	0	0	0
Stock-based compensation, Shares		0	0
Issuance of common stock pursuant to employee stock purchase plan	976	$ 0	$ 0	976	0	0	0
Shares issued pursuant to employee stock purchase plan, Shares		0	34,152
Issuance of common stock for settlement of deferred stock units	0	$ 0	$ 0	0	0	0	0
Issuance of common stock for settlement of deferred stock units, Shares		0	455,151
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	195,830
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	10,110
Shares withheld related to net share settlement of stock-based awards	(8,730)	$ 0	$ 0	(8,730)	0	0	0
Shares withheld related to net share settlement of stock-based awards, shares		0	(217,229)
Windfall tax benefit from stock-based award activity	6,173	$ 0	$ 0	6,173	0	0	0
Ending Balance at Dec. 31, 2015	188,990	$ 0	$ 4	80,591	(4)	107,942	457
Ending Balance, Shares at Dec. 31, 2015		0	37,396,456
Net and comprehensive income	65,010	$ 0	$ 0	0	0	64,657	353
Stock-based compensation	7,035	$ 0	$ 0	7,035	0	0	0
Stock-based compensation, Shares		0	0
Issuance of common stock pursuant to employee stock purchase plan	673	$ 0	$ 0	673	0	0	0
Shares issued pursuant to employee stock purchase plan, Shares		0	30,080
Issuance of common stock for settlement of deferred stock units	0	$ 0	$ 0	0	0	0	0
Issuance of common stock for settlement of deferred stock units, Shares		0	435,026
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	231,971
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	14,742
Shares withheld related to net share settlement of stock-based awards	(5,565)	$ 0	$ 0	(5,565)	0	0	0
Shares withheld related to net share settlement of stock-based awards, shares		0	(226,009)
Windfall tax benefit from stock-based award activity	2,711	$ 0	$ 0	2,711	0	0	0
Ending Balance at Dec. 31, 2016	258,854	$ 0	$ 4	85,445	(4)	172,599	810
Ending Balance, Shares at Dec. 31, 2016		0	37,882,266
Cumulative effect of a change in accounting principle, net of tax at Dec. 31, 2016	33	$ 0	$ 0	85	0	(52)	0
Balance at January 1, 2017, as adjusted at Dec. 31, 2016	258,887	$ 0	$ 4	85,530	(4)	172,547	810
Balance at January 1, 2017, as adjusted, Shares at Dec. 31, 2016		0	37,882,266
Net and comprehensive income	51,654	$ 0	$ 0	0	0	51,524	130
Stock-based compensation	9,145	$ 0	$ 0	9,145	0	0	0
Stock-based compensation, Shares		0	0
Issuance of common stock pursuant to employee stock purchase plan	653	$ 0	$ 0	653	0	0	0
Shares issued pursuant to employee stock purchase plan, Shares		0	30,209
Issuance of common stock for settlement of deferred stock units	0	$ 0	$ 0	0	0	0	0
Issuance of common stock for settlement of deferred stock units, Shares		0	351,801
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	284,837
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	17,538
Shares withheld related to net share settlement of stock-based awards	(5,451)	$ 0	$ 0	(5,451)	0	0	0
Shares withheld related to net share settlement of stock-based awards, shares		0	(192,640)
Ending Balance at Dec. 31, 2017	$ 314,888	$ 0	$ 4	$ 89,877	$ (4)	$ 224,071	$ 940
Ending Balance, Shares at Dec. 31, 2017		0	38,374,011

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities
Net income	$ 51,524	$ 64,657	$ 66,350
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	5,363	4,387	3,305
Provision for bad debt expense	219	47	281
Stock-based compensation	9,145	7,035	7,114
Deferred taxes, net	12,825	(483)	65
Net realized losses (gains) on marketable securities, available-for-sale	(2)	123	(132)
Tax benefit from stock-based award activity	0	2,711	10,483
Excess tax benefit from stock-based award activity	0	(2,711)	(10,483)
Other non-cash items	108	444	509
Changes in operating assets and liabilities:
Commissions receivable	(4,777)	(1,467)	70
Prepaid expenses	(1,567)	(552)	(6)
Prepaid rent	(2,107)	(4,210)	(5,430)
Assets held in rabbi trust	(700)	(1,263)	(1,514)
Other assets, net	(13,665)	(803)	(8,027)
Accounts payable and accrued expenses	(572)	964	(912)
Income tax receivable (payable)	(126)	2,867	(6,649)
Accrued bonuses and other employee related expenses	1,782	(8,218)	3,261
Deferred compensation and commissions	8,427	10,988	12,360
Deferred rent obligation and other liabilities	660	(30)	1,475
Net cash provided by operating activities	66,537	74,486	72,120
Cash flows from investing activities
Purchases of marketable securities, available-for-sale	(65,093)	(107,898)	(146,050)
Proceeds from sales and maturities of marketable securities, available-for-sale	44,753	137,593	26,142
Payments received on employee notes receivable	27	12	22
Issuances of employee notes receivable	(481)	(455)	(247)
Purchase of property and equipment	(6,554)	(9,473)	(6,796)
Proceeds from sale of property and equipment	10	40	0
Net cash (used in) provided by investing activities	(27,338)	19,819	(126,929)
Cash flows from financing activities
Proceeds from issuance of shares pursuant to employee stock purchase plan	653	673	976
Taxes paid related to net share settlement of stock-based awards	(5,451)	(5,565)	(8,730)
Excess tax benefit from stock-based award activity	0	2,711	10,483
Principal payments on notes payable to former stockholders	(986)	(938)	(894)
Net cash (used in) provided by financing activities	(5,784)	(3,119)	1,835
Net increase (decrease) in cash and cash equivalents	33,415	91,186	(52,974)
Cash and cash equivalents at beginning of year	187,371	96,185	149,159
Cash and cash equivalents at end of year	220,786	187,371	96,185
Supplemental disclosures of cash flow information
Interest paid during the period	1,912	628	868
Income taxes paid, net	35,002	37,350	43,120
Supplemental disclosures of noncash investing and financing activities
Reduction of accrued bonuses and other employee related expenses in settlement of employee notes receivable	243	325	208
Property and equipment additions incurred but not yet paid included in accounts payable and accrued expenses	(359)	34	462
Settlements of deferred compensation obligation with trust assets	$ 0	$ 0	$ 37

Description of Business and Bas

Description of Business and Basis of Presentation	12 Months Ended
	Dec. 31, 2017
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 December 31, 2017, 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 Company’s consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”). The 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.

Accounting Policies

Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Accounting Policies	2. Accounting Policies Cash and Cash Equivalents The Company considers cash and cash equivalents to include short-term, highly liquid investments with maturities of three months or less when purchased. At December 31, 2017 and 2016, portions of the balance of cash and cash equivalents were held in four financial institutions, various money market funds with fixed and floating net asset values and short-term commercial paper. Money market funds that have floating net asset values and may be subject to gating or liquidity fees. Management believes the likelihood of realizing material losses from the excess of cash balances over federally insured limits is remote. 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. Revenues from real estate brokerage commissions are recognized when there is persuasive evidence of an arrangement, all services have been provided, the price is fixed and determinable and collectability is reasonably assured. These criteria are typically met at the close of escrow. 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. Revenues from financing fees are recognized at the time the loan closes and there are no remaining significant obligations for performance in connection with the transaction. Other revenues generally include fees generated from consulting and advisory services, as well as referral fees from other real estate brokers. Revenues from these services are recognized when the services are provided or upon closing of the transaction. Commissions Receivable Commissions receivable consists of commissions earned on brokerage transactions for which payment has not yet been received. The Company evaluates the need for an allowance for doubtful accounts based on the specific-identification of potentially uncollectible accounts. The majority of commissions receivable are settled within 10 days after the close of escrow. As a result, the Company did not require an allowance for commissions receivable at December 31, 2017 and 2016. Cost of Services Cost of services principally consists of variable commissions, compensation-related costs related to the Company’s financing activities and other costs for the Company’s investment sales and financing professionals related to transactions closed in the period. Investment sales and financing professionals’ commissions are generally accrued based on revenue from transactions generated by the Company’s investment sales and financing professionals. Investment sales and financing professionals are compensated at commission rates based on individual agreements and a portion of the commissions due upon the closing of a transaction may be deferred in accordance with their contracts. Investments in Marketable Securities, Available-for-Sale The Company maintains a portfolio of investments in a variety of fixed and variable rate debt securities, including U.S. treasuries, U.S. government sponsored entities, corporate debt securities, asset-backed securities and other. The Company considers its investment in marketable securities to be available-for-sale. The Company regularly reviews its investment portfolio to determine if any security is other-than-temporarily impaired, which would require the Company to record an impairment charge in the period any such determination is made. In making this judgment, the Company evaluates, among other items, the time frame and extent to which the fair market value of a security is less than its amortized cost, the Company’s intent and ability to sell, or whether the Company will more likely than not be required to sell, the security before recovery of its amortized cost basis. Assets Held in Rabbi Trust The Company provides a non-qualified Recurring Fair Value Measurements The Company carries its investments including commercial paper and floating NAV money market funds recorded in cash and cash equivalents, investments in marketable securities, available-for-sale The degree of judgment used in measuring the fair value of financial instruments generally inversely correlates 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 in the consolidated balance sheets 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 Assets and Liabilities not Measured at Fair Value The Company’s commissions receivable, amounts due from employees and investment sales and financing professionals (included in other assets, net current and other assets non-current non-current The Company’s obligations under notes payable to former stockholders bear fixed interest rates. The Company has determined that the carrying value on these instruments approximates fair value. As the Company’s obligations under stock appreciation rights (“SARs”) liability (included in deferred compensation and commissions current and deferred compensation and commissions non-current Property and Equipment, Net Property and equipment are stated at cost less accumulated depreciation and amortization. The Company uses the straight-line method for depreciation and amortization. Depreciation and amortization are generally provided over estimated useful lives ranging from three to seven years. The Company evaluates its fixed assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Other Assets Other assets consist primarily of amounts due from the Company’s investment sales and financing professionals, security deposits made in connection with operating leases, customer trust accounts, employee notes receivable and other receivables. The Company, from time to time, advances funds to its investment sales and financing professionals. Certain amounts may bear a nominal interest rate, with any cash receipts on notes applied first to any unpaid principal balance prior to any income being recognized. The Company generally has the ability to collect a portion of these amounts from future commissions due to the investment sales and financing professional. The Company may forgive a portion of the amount over time depending on the nature of the advance generally ratably over a contracted service period. Amounts forgiven are charged to selling, general and administrative expense at the time the amounts are forgiven. The Company evaluates the need for an allowance for these amounts based on the specific identification of potentially uncollectible amounts and provides an allowance based on consideration of historical experience. Amounts are generally written off upon separation from the Company of the investment sales and financing professional as a service provider or when amounts are determined to be no longer collectable. In connection with a brokerage transaction, the Company may need to, or be required to, hold cash in escrow for a transaction participant. These amounts are deposited into separate customer trust accounts controlled by the Company. The amounts are included in current other assets, net with a corresponding liability included in accounts payable and accrued expenses, both in the consolidated balance sheets. Leases The Company leases all of its facilities under operating lease agreements. Lease agreements may contain periods of free rent or reduced rent or contain predetermined fixed increases in the minimum rent. The Company recognizes the minimum lease payments as rent expense on a straight-line basis over the noncancellable term of the lease, which considers renewals and early termination clauses. The Company records the difference between the amount charged to rent expense and the rent paid as a deferred rent obligation (included in accounts payable and accrued expenses and deferred rent and other liabilities captions). The Company typically leases general purpose built-out Advertising Costs Advertising costs are expensed as incurred. Advertising costs are included in selling, general, and administrative expense in the accompanying consolidated statements of net and comprehensive income. Advertising costs for the years ended December 31, 2017, 2016 and 2015 was $824,000, $1.2 million and $1.1 million, respectively. Income Taxes The Company accounts for income taxes under the asset and liability method. The Company recognizes deferred tax assets and liabilities for the future tax consequences attributable to (1) differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis, and (2) operating losses and tax credit carryforwards. The Company measures existing deferred tax assets and liabilities using enacted tax rates expected to apply to taxable income in the years in which the Company expects to have temporary differences to be realized or settled. The Company recognizes in the provision for income taxes the effect on deferred tax assets and liabilities of a change in tax rates in the period that includes the enactment date. The Company periodically evaluates the deferred tax assets to assess whether it is likely that the deferred tax assets will be realized. In determining whether a valuation allowance is required, the Company considers the timing of deferred tax reversals, current year taxable income and historical performance. Valuation allowances are provided against deferred tax assets when it is more-likely-than-not Because of the nature of the Company’s business, which includes activity in the U.S. and Canada, incorporating numerous states and provinces as well as local jurisdictions, the Company’s tax position can be complex. As such, the Company’s effective tax rate is subject to changes as a result of fluctuations in the mix of its activity in the various jurisdictions in which the Company operates including changes in tax rates, state apportionment, tax related interest and penalties, valuation allowances and other permanent items. The threshold for recognizing the benefits of tax return positions in the financial statements is “more likely than not” to be sustained by the taxing authority and requires measurement of a tax position meeting the more-likely-than-not The Company recognizes interest and penalties incurred as income tax expense. Stock-Based Compensation The Company follows the accounting guidance for share based payments which requires the measurement and recognition of compensation expense for all stock based awards made to employees, independent contractors and non-employee For awards made to the Company’s employees and directors, the Company initially values restricted stock units and restricted stock awards based on the grant date closing price of the Company’s common stock. For awards with periodic vesting, the Company recognizes the related expense on a straight-line basis over the requisite service period for the entire award, subject to periodic adjustments to ensure that the cumulative amount of expense recognized through the end of any reporting period is at least equal to the portion of the grant date value of the award that has vested through that date. For awards made to independent contractors, which are the Company’s investment sales and financing professionals, the Company determined that the fair value of the award shall be measured based on the fair value of the equity instrument as it is more reliably measureable than the fair value of the consideration received. The Company uses the grant date as the performance commitment date, and the measurement date for these awards is the date the services are completed, which is the vesting date. As a result, the Company records stock-based compensation for these awards over the vesting period on a straight-line basis with periodic adjustments during the vesting period for changes in the fair value of the awards. After adoption of Accounting Standards Update (“ASU”) No. 2016-09, Improvements to Employee Share-Based Payment Accounting 2016-09”) If there are any modifications or cancellations of the underlying unvested share-based awards, the Company may be required to accelerate, increase or cancel any remaining unrecognized or previously recorded stock-based compensation expense. For awards issued under the 2013 ESPP Plan, the Company determined that the plan was a compensatory plan and is required to expense the fair value of the awards over each six-month Earnings per Share Basic weighted average shares outstanding includes vested, but un-issued, Foreign Currency Translation The Company prepares the financial statements of its Canadian subsidiary using the local currency as the functional currency. The assets and liabilities of the Company’s Canadian subsidiary are translated in to U.S. dollars at the rates of exchange at the balance sheet date with the resulting translation adjustments included as a separate component of stockholder’s equity through other comprehensive income (loss) in the consolidated statements of net and comprehensive income. Income and expenses are translated at the average monthly rates of exchange. The Company includes gains and losses from foreign currency transactions in other income (expense), net in the consolidated statements of net and comprehensive income. The effect of foreign currency translation on cash and cash equivalents is reflected in cash flows from operating activities on the consolidated statements of cash flows, and is not material for any period presented. Taxes Collected From Clients and Remitted to Governmental Authorities The Company accounts for tax assessed by any governmental authority that is based on revenue or transaction value (i.e. sales, use and value added taxes) on a net basis, and, accordingly, such amounts are not included in revenue. Collected amounts are recorded as a current liability until paid. Use of Estimates The preparation of 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 consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates. 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 twelve months ended December 31, 2017, 2016 and 2015, the Company’s Canadian operations represented less than 1% of total revenues. During the twelve months ended December 31, 2017, 2016 and 2015 no office represented 10% or more of total revenues. 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 our 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 March 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-09. 2016-09 2016-09 As a result of the adoption, in periods subsequent to December 31, 2016, windfall tax benefits, net are recorded as a discrete item in the Company’s provision for income taxes. The Company recognized $2.9 million in windfall tax benefits, net during the year ended December 31, 2017 as a reduction in the provision for income taxes in the consolidated statements of net and comprehensive income. See Note 11 – “Income Taxes” for additional information. Prior to the adoption, any windfall tax benefits, net were recorded in additional paid in capital. Additionally, in periods subsequent to December 31, 2016, excess tax benefits for share-based payments are included in cash flows from operating activities rather than cash flows from financing activities, prior periods have not been adjusted. Further, the Company changed its accounting for forfeitures from estimating awards that are not expected to vest to recording forfeitures when they actually occur. The cumulative effect adjustment as of January 1, 2017 related to forfeitures was a charge to retained earnings of approximately $52,000 (net of tax) and is expected to have a minor impact on the timing of stock based compensation subsequent to January 1, 2017. See Note 10 – “Stock-Based Compensation Plans” for additional information. In May 2017, the FASB issued ASU No. 2017-09, Compensation 2017-09”), 2017-09 clarifies 2017-09 Pending Adoption In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers 2014-09”), 2014-09, No. 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date No. 2016-08, Revenue from Contacts with Customers: Principal Versus Agent Considerations No. 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 impacts 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 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 fixed and determinable and collectability is reasonably assured. Revenue should 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, ASU 2014-09 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

Property and Equipment, Net

Property and Equipment, Net	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	3. Property and Equipment, Net Property and equipment, net consisted of the following (in thousands): December 31, 2017 2016 Computer software and hardware equipment $ 16,247 $ 14,583 Furniture, fixtures, and equipment 21,695 20,066 Less: accumulated depreciation and amortization (20,789 ) (18,294 ) $ 17,153 $ 16,355 During the years ended December 31, 2017 and 2016, the Company wrote-off

Selected Balance Sheet Data

Selected Balance Sheet Data	12 Months Ended
	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Selected Balance Sheet Data	4. Selected Balance Sheet Data Other Assets Other assets consisted of the following (in thousands): Current Non-Current 2017 2016 2017 2016 Due from independent contractors, net (1) (2) $ 3,672 $ 2,231 $ 21,726 $ 8,702 Security deposits — — 1,158 1,059 Employee notes receivable (3) 366 314 255 132 Customer trust accounts and other 1,491 2,557 24 88 $ 5,529 $ 5,102 $ 23,163 $ 9,981 (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. As of December 31, 2017 and 2016, the weighted average interest rate for notes receivable due from the Company’s investment sales and financing professionals was approximately 3.5% and 3.3%, respectively. Any cash receipts on notes are applied first to unpaid principal balance prior to any income being recognized. (2) Includes allowance for doubtful accounts related to current receivables of $494 and $313 as of December 31, 2017 and 2016, respectively. The Company recorded a provision for bad debt expense of $219, $47 and $281 and wrote off $38, $93 and $115 of these receivables for the years ended December 31, 2017, 2016 and 2015, respectively. (3) See Note 7 – “Related-Party Transactions” for additional information. Deferred Compensation and Commissions Deferred compensation and commissions consisted of the following (in thousands): Current Non-Current 2017 2016 2017 2016 SARs liability (1) $ 1,662 $ 1,366 $ 20,217 $ 20,949 Commissions payable to investment sales and financing professionals 46,257 42,781 21,924 17,101 Deferred compensation liability (1) 1,261 607 7,220 6,405 $ 49,180 $ 44,754 $ 49,361 $ 44,455 (1) The SARs and deferred compensation liability become subject to payout as a result of a participant no longer being considered as an employee or 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. 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 twelve months ended December 31, 2017, the Company made total payments (consisting of accumulated interest) of $1.4 million classified as an operating cash flow in the deferred compensation and commissions caption in the accompanying consolidated statements 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 a Deferred Compensation Plan. The plan is a 409A plan and permits the participant to defer compensation up to limits as determined by the plan. Amounts are paid out generally when the participant is no longer a service provider; however, an 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): December 31, 2017 2016 2015 Increase (decrease) in the carrying value of the assets held in the rabbi trust (1) $ 849 $ 470 $ (57 ) Increase (decrease) in the carrying value of the deferred compensation obligation (2) $ 904 $ 452 $ (67 ) (1) Recorded in other income (expense), net in the consolidated statements of net and comprehensive income. (2) Recorded in selling, general and administrative expense in the consolidated statements of net and comprehensive income.

Investments in Marketable Secur

Investments in Marketable Securities	12 Months Ended
	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Investments in Marketable Securities	5. Investments in Marketable Securities Amortized cost and fair value of marketable securities, available-for-sale, December 31, 2017 December 31, 2016 Amortized Gross Gross Fair Value Amortized Gross Gross Fair Value Short-term investments: U.S. treasuries $ 57,712 $ — $ (88 ) $ 57,624 $ 24,987 $ — $ (30 ) $ 24,957 U.S. government sponsored entities 7,016 — (8 ) 7,008 2,497 — — 2,497 Corporate debt securities 8,931 — (3 ) 8,928 — — — — $ 73,659 $ — $ (99 ) $ 73,560 $ 27,484 $ — $ (30 ) $ 27,454 Long-term investments: U.S. treasuries $ 18,111 $ 7 $ (164 ) $ 17,954 $ 40,865 $ — $ (229 ) $ 40,636 U.S. government sponsored entities 5,306 — (62 ) 5,244 12,618 — (58 ) 12,560 Corporate debt securities 22,505 268 (54 ) 22,719 17,841 74 (165 ) 17,750 Asset-backed securities and other 6,180 17 (15 ) 6,182 6,557 18 (46 ) 6,529 $ 52,102 $ 292 $ (295 ) $ 52,099 $ 77,881 $ 92 $ (498 ) $ 77,475 The amortized cost and fair value of the Company’s investments in available-for-sale December 31, 2017 December 31, 2016 Unrealized Fair Unrealized Fair Less than 12 months $ (158 ) $ 63,229 $ (491 ) $ 86,105 12 months or longer $ (236 ) $ 44,961 $ (37 ) $ 721 Gross realized gains and gross realized losses from the sales of the Company’s available-for-sale December 31, 2017 2016 Gross realized gains (1) $ 2 $ 43 Gross realized losses (1) $ — $ (166 ) (1) Recorded in other income (expense), net in the consolidated statements of net and comprehensive income. The cost basis of securities sold were determined on the specific identification method. The Company may sell certain of its marketable securities, available-for-sale As of December 31, 2017, 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, December 31, 2017 December 31, 2016 Amortized Fair Amortized Fair Due in one year or less $ 73,659 $ 73,560 $ 27,484 $ 27,454 Due after one year through five years 30,644 30,517 57,309 57,144 Due after five years through ten years 15,090 15,200 14,992 14,841 Due after ten years 6,368 6,382 5,580 5,490 $ 125,761 $ 125,659 $ 105,365 $ 104,929 Weighted average maturity 2.6 years 3.5 years Actual maturities may differ from contractual maturities because certain borrowers are required to make principal payments or have the right to prepay certain obligations with or without prepayment penalties.

Notes Payable to Former Stockho

Notes Payable to Former Stockholders	12 Months Ended
	Dec. 31, 2017
Payables and Accruals [Abstract]
Notes Payable to Former Stockholders	6. Notes Payable to Former Stockholders In conjunction with the Spin-Off Accrued interest included in accounts payable and accrued expenses in the accompanying consolidated balance sheets pertaining to the Notes consisted of the following (in thousands): December 31, 2017 2016 Accrued interest $ 305 $ 337 Interest expense pertaining to the Notes consisted of the following (in thousands): Years Ended December 31, 2017 2016 2015 Interest expense $ 454 $ 502 $ 548 Future minimum principal payments on the Notes consisted of the following (in thousands): December 31, 2017 2018 $ 1,035 2019 1,087 2020 6,564 2021 — 2022 — $ 8,686

Related-Party Transactions

Related-Party Transactions	12 Months Ended
	Dec. 31, 2017
Related Party Transactions [Abstract]
Related-Party Transactions	7. 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 years ended December 31, 2017, 2016 and 2015, the Company generated real estate brokerage commissions and financing fees of $2.1 million, $5.1 million and $2.7 million, respectively, from subsidiaries of MMC related to these services. The Company incurred cost of services of $1.2 million, $3.0 million and $1.6 million, 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 $1.0 million, $1.0 million and $693,500 for the years ended December 31, 2017, 2016 and 2015, respectively. Rent expense is included in selling, general and administrative expense in the accompanying consolidated statements of net and comprehensive income. Accounts Payable and Accrued Expenses with MMC As of December 31, 2017 and 2016, accounts payable and accrued expenses with MMC totaling $91,000 and $303,000, respectively, remain unpaid and are included in accounts payable and accrued expenses in the accompanying consolidated balance sheets. Other The Company makes advances to non-executive time-to-time. non-current As of December 31, 2017, George M. Marcus, the Company’s founder and Co-Chairman,

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	8. Fair Value Measurements 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 in Note 2 – “Accounting Policies” and consisted of the following (in thousands): December 31, 2017 December 31, 2016 Fair Value Level 1 Level 2 Level 3 Fair Value Level 1 Level 2 Level 3 Assets held in rabbi trust $ 8,787 $ — $ 8,787 $ — $ 7,337 $ — $ 7,337 $ — Cash and cash equivalents (1) Commercial Paper $ 11,441 $ — $ 11,441 $ — $ 9,987 $ — $ 9,987 $ — Money market funds 157,788 157,788 — — 142,503 142,503 — — $ 169,229 $ 157,788 $ 11,441 $ — $ 152,490 $ 142,503 $ 9,987 $ — Marketable securities, available-for-sale: Short-term investments: U.S. Treasuries $ 57,624 $ 57,624 $ — $ — $ 24,957 $ 24,957 $ — $ — U.S. Government Sponsored Entities 7,008 — 7,008 — 2,497 — 2,497 — Corporate debt securities 8,928 — 8,928 — — — — — $ 73,560 $ 57,624 $ 15,936 $ — $ 27,454 $ 24,957 $ 2,497 $ — Long-term investments: U.S. Treasuries $ 17,954 $ 17,954 $ — $ — $ 40,636 $ 40,636 $ — $ — U.S. Government Sponsored Entities 5,244 — 5,244 — 12,560 — 12,560 — Corporate debt securities 22,719 — 22,719 — 17,750 — 17,750 — Asset-backed securities and other 6,182 — 6,182 — 6,529 — 6,529 — $ 52,099 $ 17,954 $ 34,145 $ — $ 77,475 $ 40,636 $ 36,839 $ — (1) Included in cash and cash equivalents. See Note 2 – “Accounting Policies” for information on fair value of the Company’s other financial instruments. There were no transfers in or out of Level 1 and Level 2 during the year ended December 31, 2017.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Stockholders' Equity	9. Stockholders’ Equity Common Stock As of December 31, 2017 and 2016, there were 38,374,011 and 37,882,266 shares of common stock, $0.0001 par value, issued and outstanding, respectively. Such amounts include 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 December 31, 2017 and 2016, there were no preferred shares issued or outstanding. Accumulated Other Comprehensive (Loss) Income The components of accumulated other comprehensive (loss) income as of December 31, 2017, by component, net of income taxes consisted of the following (in thousands): Unrealized gains and available- for-sale Foreign (2) Total Beginning balance, December 31, 2016 $ (255 ) $ 1,065 $ 810 Other comprehensive income (loss) before reclassifications 193 (63 ) 130 Amounts reclassified from accumulated other comprehensive (loss) income (1) — — — Net current-period other comprehensive income (loss) 193 (63 ) 130 Ending balance, December 31, 2017 $ (62 ) $ 1,002 $ 940 (1) Included as a component of other income (expense), net in the consolidated statements of net and comprehensive income. Reclassifications are determined on a specific identification basis. (2) 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. See Note 11 – “Income Taxes” for additional information.

Stock-Based Compensation Plans

Stock-Based Compensation Plans	12 Months Ended
	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation Plans	10. 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 approved an amendment to 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 to the 2013 Plan referenced above, the automatic share increase provision was removed. At December 31, 2017, there were 5,586,917 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 During the year ended December 31, 2017, 279,679 shares of RSUs vested and 284,837 shares of common stock were delivered, including 5,158 shares that vested in 2016 and 55,289 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. During the year ended December 31, 2017, 351,801 fully vested DSUs settled and 137,351 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. During the year ended December 31, 2017, the Company recorded windfall tax benefits, net of $2.9 million as a discrete item in the Company’s provision for income taxes when awards were settled as a result of the adoption of ASU 2016-09 paid-in paid-in Outstanding Awards Activity under the 2013 Plan consisted of the following (dollars in thousands, except per share data): RSA Grants to Non- Employee Directors RSU Grants to RSU Grants to Total Weighted- Nonvested shares at December 31, 2015 (1) 35,364 468,969 521,780 1,026,113 $ 21.17 Granted 14,742 239,012 81,880 335,634 23.76 Vested (20,994 ) (104,820 ) (132,309 ) (258,123 ) 19.88 Transferred — 2,062 (2,062 ) — 14.54 Forfeited/canceled — (38,743 ) (14,451 ) (53,194 ) 20.07 Nonvested shares at December 31, 2016 (1) 29,112 566,480 454,838 1,050,430 $ 22.38 Granted February 2017 — 139,013 7,272 146,285 May 2017 13,986 8,156 11,652 33,794 August 2017 3,552 7,889 51,308 62,749 November 2017 — 9,528 12,194 21,722 Total Granted 17,538 164,586 82,426 264,550 26.86 Vested (15,918 ) (140,480 ) (139,199 ) (295,597 ) 21.21 Transferred — (58,503 ) 58,503 — 25.70 Forfeited/canceled — (31,224 ) (6,304 ) (37,528 ) 23.30 Nonvested shares at December 31, 2017 (1) 30,732 500,859 450,264 981,855 $ 23.90 Unrecognized stock-based compensation expense as of December 31, 2017 (2) $ 534 $ 9,753 $ 10,030 $ 20,317 Weighted average remaining vesting period (years) as of December 31, 2017 1.71 3.13 2.65 2.86 (1) Nonvested RSU’s 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 2.86 years. For the years ended December 31, 2017, 2016 and 2015, the aggregate fair value of vested RSUs and RSAs were $7.8 million, $7.0 million and $7.5 million, respectively. As of December 31, 2017 and 2016, remaining outstanding fully vested DSUs were 578,618 and 930,419, respectively. For the years ended December 31, 2017, 2016 and 2015, the fair value of fully vested DSUs was $10.2 million, $10.4 million and $18.6 million, respectively. 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: December 31, 2017 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 (“2013 ESPP Plan”). The 2013 ESPP Plan qualifies under Section 423 of the IRS Code and provides for consecutive, non-overlapping 6-month 6-month The 2013 ESPP Plan initially had 366,667 shares of common stock reserved and 246,895 and 277,104 shares of common stock remain available for issuance at December 31, 2017 and 2016, respectively. The 2013 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 2013 ESPP Plan, the board of directors determined share reserve increases have not been required. At December 31, 2017, total unrecognized compensation cost related to the 2013 ESPP Plan was $58,000 and is expected to be recognized over a weighted average period of 0.37 years. Amendments to Restricted Stock and SARs Restricted Stock In connection with the IPO, the formula settlement value of all outstanding shares of stock held by the plan participants was removed, and all such shares of stock are subject to sales restrictions that lapse at a rate of 20% per year for five years if the participant remains employed by the Company. In the event of death or termination of employment after reaching the age of 67, 100% of the shares of stock will be released from the resale restriction. Further, 100% of the shares of stock will be released from the resale restriction upon the consummation of a change of control of the Company. Of the original 3,689,326 shares subject to resale restriction, 732,020 shares remain subject to sales restriction for the year ended December 31, 2017. 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 termination as employee or service provider 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 a service provider to 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 The Company adopted ASU 2016-09 Years Ended December 31, 2017 2016 2015 Employee stock purchase plan $ 128 $ 169 $ 285 RSAs – non-employee 397 422 319 RSUs – employees 3,750 3,130 2,351 RSUs – independent contractors (1) 4,870 3,314 4,159 $ 9,145 $ 7,035 $ 7,114 Common stock price at beginning of period $ 26.72 $ 29.14 $ 33.25 Common stock price at end of period $ 32.61 $ 26.72 $ 29.14 Increase (decrease) in stock price $ 5.89 $ (2.42 ) $ (4.11 ) (1) The Company grants RSUs to independent contractors (i.e. investment sales and financing professionals), who are considered non-employees

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	11. Income Taxes The provision (benefit) for income taxes consisted of the following (in thousands): Years Ended December 31, 2017 2016 2015 Income (loss) before provision for income taxes: United States $ 100,031 $ 108,797 $ 116,448 Foreign (805 ) (1,695 ) (3,080 ) $ 99,226 $ 107,102 $ 113,368 The provision (benefit) for income taxes consisted of the following: Federal: Current $ 28,993 $ 36,228 $ 39,895 Deferred 13,249 (337 ) (1,853 ) $ 42,242 $ 35,891 $ 38,042 State: Current $ 5,883 $ 6,700 $ 7,058 Deferred (423 ) (146 ) 1,918 $ 5,460 $ 6,554 $ 8,976 $ 47,702 $ 42,445 $ 47,018 On December 22, 2017, the Tax Cuts and Job Act (“the Act”) legislation 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, further limiting 162(m) deductions and creating a territorial tax system with a one-time Significant components of the Company’s deferred tax assets, net consisted of the following (in thousands): December 31, 2017 2016 Deferred Tax Assets: Accrued expenses and bonuses $ 1,307 $ 1,455 Bad debt and other reserves 1,416 2,191 Deferred compensation 12,693 19,511 Stock-based compensation 9,144 14,978 Deferred rent 1,283 1,731 Net operating and capital loss carryforwards 1,809 1,637 Other comprehensive income 6 173 State taxes 622 497 Deferred tax assets before valuation allowance 28,280 42,173 Valuation allowance (1,893 ) (1,723 ) Deferred Tax Assets $ 26,387 $ 40,450 Deferred Tax Liabilities: Fixed assets $ (2,861 ) $ (3,850 ) Prepaid expenses (886 ) (1,029 ) Deferred Tax Liabilities (3,747 ) (4,879 ) Deferred Tax Assets, Net $ 22,640 $ 35,571 As of December 31, 2017, and 2016, the Company had state and Canadian net operating and capital losses (“NOLs”) of approximately $7.8 million and $6.4 million, respectively, which will begin to expire in 2019. Certain limitations may be placed on NOLs as a result of “changes in control” as defined in Section 382 of the Internal Revenue Code. In the event a change in control occurs, it will have the effect of limiting the annual usage of the carryforwards in future years. Additional changes in control in future periods could result in further limitations of the Company’s ability to offset taxable income. In addition, the utilization of these NOLs may be subject to certain limitations under state and foreign laws. A valuation allowance is required when it is more-likely-than not that all or a portion of a deferred tax asset will not be realized. Realization of deferred tax asset is dependent upon taxable income in prior carryback years, estimates of future taxable income, tax planning strategies and reversals of existing taxable temporary differences. Management determined that as of December 31, 2017 and 2016, $1.9 million and $1.7 million, respectively, of the deferred tax assets related to state and Canadian losses do not satisfy the recognition criteria and therefore have recorded a valuation allowance for this amount. The valuation allowance for deferred tax assets was increased by $170,000, $412,000 and $583,000 during 2017, 2016 and 2015, respectively. The increases are primarily related to the Company’s Canadian operations. The provision for income taxes differs from the amount computed by applying the statutory federal corporate income tax rate of 35% to income before provision for income taxes and consisted of the following (in thousands): Years Ended December 31, 2017 2016 2015 Amount Rate Amount Rate Amount Rate Income tax expense at the federal statutory rate of 35% $ 34,729 35.0 % $ 37,485 35.0 % $ 39,679 35.0 % State income tax expense, net of federal benefit 3,577 3.6 % 4,346 4.1 % 4,569 4.0 % Effect of state rate change on deferred taxes (30 ) — (79 ) (0.1 )% 1,273 1.1 % Windfall tax benefits, net of shortfalls related to stock-based compensation (2,568 ) (2.6 )% — — — — Permanent differences related to compensation charges, net of federal benefit 30 — 39 — 81 0.1 % Change in valuation allowance 170 0.2 % 412 0.4 % 583 0.5 % Effect of rate and other changes on federal deferred taxes, net due to enactment of Tax Cuts and Jobs Act 11,644 11.7 % — — — — Other 150 0.2 % 242 0.2 % 833 0.8 % $ 47,702 48.1 % $ 42,445 39.6 % $ 47,018 41.5 % During the year ended December 31, 2016, the Company recorded $2.7 million as a credit to additional paid-in 2016-09, As of December 31, 2017 and 2016, the Company has no liabilities for unrecognized tax benefits or any related interest or penalties. The Company is subject to tax in various jurisdictions and, as a matter or ordinary course, the Company is subject to income tax examinations by the federal, state and foreign taxing authorities for the tax years 2013 to 2017. The Company is not currently under income tax examination by any taxing authorities. 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 translation adjustments.

Retirement Plans

Retirement Plans	12 Months Ended
	Dec. 31, 2017
Retirement Benefits [Abstract]
Retirement Plans	12. Retirement Plans Effective January 2014, the Company has its own defined contribution plan (the “Contribution Plan”) under Section 401(k) of the Internal Revenue Code for all eligible employees who have completed one month of service. The Contribution Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended. Participants may contribute up to 100% of their annual eligible compensation, subject to IRS limitation and ERISA. The Company makes matching contributions of 50% on the first 8% of employee contributions per pay period up to a maximum of the employee’s compensation, up to a maximum of $4,000 per eligible employee per year. Company matching contributions aggregated $733,000, $628,000 and $570,000 for the years ended December 31, 2017, 2016 and 2015, respectively, which is included in selling, general and administrative expense in the consolidated statements of net and comprehensive income.

Earnings per Share

Earnings per Share	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Earnings per Share	13. Earnings per Share Basic and diluted earnings per share for the years ended December 31, 2017, 2016 and 2015 consisted of the following (in thousands, except per share data): Years Ended December 31, 2017 2016 2015 Numerator (Basic and Diluted): Net income $ 51,524 $ 64,657 $ 66,350 Denominator: Basic Weighted Average Common Shares Issued and Outstanding 38,142 37,637 37,141 Deduct: Unvested RSAs (1) (29 ) (36 ) (43 ) Add: Fully vested DSUs (2) 875 1,298 1,750 Weighted Average Common Shares Outstanding 38,988 38,899 38,848 Basic earnings per common share $ 1.32 $ 1.66 $ 1.71 Diluted Weighted Average Common Shares Outstanding from above 38,988 38,899 38,848 Add: Dilutive effect of RSUs, RSAs & ESPP 112 136 314 Weighted Average Common Shares Outstanding 39,100 39,035 39,162 Diluted earnings per common share $ 1.32 $ 1.66 $ 1.69 Antidilutive shares excluded from diluted earnings per common share (3) 512 516 79 (1) RSAs were issued and outstanding to the non-employee (2) Shares are included in weighted average common shares outstanding as the shares are fully vested but have not yet been delivered. See Note 9 – “Stockholders’ Equity” for additional information. (3) Primarily pertaining to RSU grants to the Company’s employees and independent contractors.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	14. Commitments and Contingencies Operating Leases Future minimum lease payments under non-cancelable December 31, 2017 2018 $ 18,650 2019 16,468 2020 15,423 2021 12,997 2022 9,364 Thereafter 13,995 $ 86,897 Deferred rent totaled $4.8 million and $4.3 million as of December 31, 2017 and 2016, respectively. The noncurrent portion is included in defered rent and other liabilities and the current portion is included in accounts payable and accrued expenses in the accompanying consolidated balance sheets. Rental expense was $25.6 million, $23.4 million and $17.8 million for the years ended December 31, 2017, 2016 and 2015, respectively and is included in selling, general, and administrative expense in the accompanying consolidated statements of net and comprehensive income. Certain facility leases provide for rental escalations related to increases in the lessors’ direct operating expenses. The Company subleases certain office space to subtenants. The rental income received from these subleases is included as a reduction of rental expense and was not material for the years ended December 31, 2017, 2016 and 2015, respectively. 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 December 31, 2017. 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 December 31, 2017 aggregated $2.9 million.

Selected Quarterly Financial Da

Selected Quarterly Financial Data	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data	15. Selected Quarterly Financial Data (Unaudited) The Company’s real estate brokerage commissions and financing fees are seasonal, which can affect an investor’s ability to compare the Company’s financial condition and results of operation on a quarter-by-quarter Three Months Ended Dec. 31 Sep. 30 Jun. 30 Mar. 31 Dec. 31 Sep. 30 Jun. 30 Mar. 31 (in thousands, except per share data) Consolidated Financial Statement Data: Total revenues $ 202,776 $ 183,341 $ 180,371 $ 153,212 $ 189,157 $ 180,634 $ 183,387 $ 164,272 Cost of services 131,730 114,803 110,377 89,647 121,637 113,852 113,126 96,153 Operating income 27,403 24,683 24,998 19,048 27,906 24,905 28,832 24,858 Net income 8,480 15,475 15,569 12,000 17,174 15,144 17,524 14,815 Earnings per share: Basic $ 0.22 $ 0.40 $ 0.40 $ 0.31 $ 0.44 $ 0.39 $ 0.45 $ 0.38 Diluted $ 0.22 $ 0.39 $ 0.40 $ 0.31 $ 0.44 $ 0.39 $ 0.45 $ 0.38

Description of Business and B23

Description of Business and Basis of Presentation (Policies)	12 Months Ended
	Dec. 31, 2017
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 December 31, 2017, 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 Company’s consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”). The 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.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers cash and cash equivalents to include short-term, highly liquid investments with maturities of three months or less when purchased. At December 31, 2017 and 2016, portions of the balance of cash and cash equivalents were held in four financial institutions, various money market funds with fixed and floating net asset values and short-term commercial paper. Money market funds that have floating net asset values and may be subject to gating or liquidity fees. Management believes the likelihood of realizing material losses from the excess of cash balances over federally insured limits is remote.
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. Revenues from real estate brokerage commissions are recognized when there is persuasive evidence of an arrangement, all services have been provided, the price is fixed and determinable and collectability is reasonably assured. These criteria are typically met at the close of escrow. 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. Revenues from financing fees are recognized at the time the loan closes and there are no remaining significant obligations for performance in connection with the transaction. Other revenues generally include fees generated from consulting and advisory services, as well as referral fees from other real estate brokers. Revenues from these services are recognized when the services are provided or upon closing of the transaction.
Commissions Receivable	Commissions Receivable Commissions receivable consists of commissions earned on brokerage transactions for which payment has not yet been received. The Company evaluates the need for an allowance for doubtful accounts based on the specific-identification of potentially uncollectible accounts. The majority of commissions receivable are settled within 10 days after the close of escrow. As a result, the Company did not require an allowance for commissions receivable at December 31, 2017 and 2016.
Cost of Services	Cost of Services Cost of services principally consists of variable commissions, compensation-related costs related to the Company’s financing activities and other costs for the Company’s investment sales and financing professionals related to transactions closed in the period. Investment sales and financing professionals’ commissions are generally accrued based on revenue from transactions generated by the Company’s investment sales and financing professionals. Investment sales and financing professionals are compensated at commission rates based on individual agreements and a portion of the commissions due upon the closing of a transaction may be deferred in accordance with their contracts.
Investments in Marketable Securities, Available-for-Sale	Investments in Marketable Securities, Available-for-Sale The Company maintains a portfolio of investments in a variety of fixed and variable rate debt securities, including U.S. treasuries, U.S. government sponsored entities, corporate debt securities, asset-backed securities and other. The Company considers its investment in marketable securities to be available-for-sale. The Company regularly reviews its investment portfolio to determine if any security is other-than-temporarily impaired, which would require the Company to record an impairment charge in the period any such determination is made. In making this judgment, the Company evaluates, among other items, the time frame and extent to which the fair market value of a security is less than its amortized cost, the Company’s intent and ability to sell, or whether the Company will more likely than not be required to sell, the security before recovery of its amortized cost basis.
Assets Held in Rabbi Trust	Assets Held in Rabbi Trust The Company provides a non-qualified
Recurring Fair Value Measurements	Recurring Fair Value Measurements The Company carries its investments including commercial paper and floating NAV money market funds recorded in cash and cash equivalents, investments in marketable securities, available-for-sale The degree of judgment used in measuring the fair value of financial instruments generally inversely correlates 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 in the consolidated balance sheets 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 Assets and Liabilities not Measured at Fair Value The Company’s commissions receivable, amounts due from employees and investment sales and financing professionals (included in other assets, net current and other assets non-current non-current The Company’s obligations under notes payable to former stockholders bear fixed interest rates. The Company has determined that the carrying value on these instruments approximates fair value. As the Company’s obligations under stock appreciation rights (“SARs”) liability (included in deferred compensation and commissions current and deferred compensation and commissions non-current
Property and Equipment, Net	Property and Equipment, Net Property and equipment are stated at cost less accumulated depreciation and amortization. The Company uses the straight-line method for depreciation and amortization. Depreciation and amortization are generally provided over estimated useful lives ranging from three to seven years. The Company evaluates its fixed assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable.
Other Assets	Other Assets Other assets consist primarily of amounts due from the Company’s investment sales and financing professionals, security deposits made in connection with operating leases, customer trust accounts, employee notes receivable and other receivables. The Company, from time to time, advances funds to its investment sales and financing professionals. Certain amounts may bear a nominal interest rate, with any cash receipts on notes applied first to any unpaid principal balance prior to any income being recognized. The Company generally has the ability to collect a portion of these amounts from future commissions due to the investment sales and financing professional. The Company may forgive a portion of the amount over time depending on the nature of the advance generally ratably over a contracted service period. Amounts forgiven are charged to selling, general and administrative expense at the time the amounts are forgiven. The Company evaluates the need for an allowance for these amounts based on the specific identification of potentially uncollectible amounts and provides an allowance based on consideration of historical experience. Amounts are generally written off upon separation from the Company of the investment sales and financing professional as a service provider or when amounts are determined to be no longer collectable. In connection with a brokerage transaction, the Company may need to, or be required to, hold cash in escrow for a transaction participant. These amounts are deposited into separate customer trust accounts controlled by the Company. The amounts are included in current other assets, net with a corresponding liability included in accounts payable and accrued expenses, both in the consolidated balance sheets.
Leases	Leases The Company leases all of its facilities under operating lease agreements. Lease agreements may contain periods of free rent or reduced rent or contain predetermined fixed increases in the minimum rent. The Company recognizes the minimum lease payments as rent expense on a straight-line basis over the noncancellable term of the lease, which considers renewals and early termination clauses. The Company records the difference between the amount charged to rent expense and the rent paid as a deferred rent obligation (included in accounts payable and accrued expenses and deferred rent and other liabilities captions). The Company typically leases general purpose built-out
Advertising Costs	Advertising Costs Advertising costs are expensed as incurred. Advertising costs are included in selling, general, and administrative expense in the accompanying consolidated statements of net and comprehensive income. Advertising costs for the years ended December 31, 2017, 2016 and 2015 was $824,000, $1.2 million and $1.1 million, respectively.
Income Taxes	Income Taxes The Company accounts for income taxes under the asset and liability method. The Company recognizes deferred tax assets and liabilities for the future tax consequences attributable to (1) differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis, and (2) operating losses and tax credit carryforwards. The Company measures existing deferred tax assets and liabilities using enacted tax rates expected to apply to taxable income in the years in which the Company expects to have temporary differences to be realized or settled. The Company recognizes in the provision for income taxes the effect on deferred tax assets and liabilities of a change in tax rates in the period that includes the enactment date. The Company periodically evaluates the deferred tax assets to assess whether it is likely that the deferred tax assets will be realized. In determining whether a valuation allowance is required, the Company considers the timing of deferred tax reversals, current year taxable income and historical performance. Valuation allowances are provided against deferred tax assets when it is more-likely-than-not Because of the nature of the Company’s business, which includes activity in the U.S. and Canada, incorporating numerous states and provinces as well as local jurisdictions, the Company’s tax position can be complex. As such, the Company’s effective tax rate is subject to changes as a result of fluctuations in the mix of its activity in the various jurisdictions in which the Company operates including changes in tax rates, state apportionment, tax related interest and penalties, valuation allowances and other permanent items. The threshold for recognizing the benefits of tax return positions in the financial statements is “more likely than not” to be sustained by the taxing authority and requires measurement of a tax position meeting the more-likely-than-not The Company recognizes interest and penalties incurred as income tax expense.
Stock-Based Compensation	Stock-Based Compensation The Company follows the accounting guidance for share based payments which requires the measurement and recognition of compensation expense for all stock based awards made to employees, independent contractors and non-employee For awards made to the Company’s employees and directors, the Company initially values restricted stock units and restricted stock awards based on the grant date closing price of the Company’s common stock. For awards with periodic vesting, the Company recognizes the related expense on a straight-line basis over the requisite service period for the entire award, subject to periodic adjustments to ensure that the cumulative amount of expense recognized through the end of any reporting period is at least equal to the portion of the grant date value of the award that has vested through that date. For awards made to independent contractors, which are the Company’s investment sales and financing professionals, the Company determined that the fair value of the award shall be measured based on the fair value of the equity instrument as it is more reliably measureable than the fair value of the consideration received. The Company uses the grant date as the performance commitment date, and the measurement date for these awards is the date the services are completed, which is the vesting date. As a result, the Company records stock-based compensation for these awards over the vesting period on a straight-line basis with periodic adjustments during the vesting period for changes in the fair value of the awards. After adoption of Accounting Standards Update (“ASU”) No. 2016-09, Improvements to Employee Share-Based Payment Accounting 2016-09”) If there are any modifications or cancellations of the underlying unvested share-based awards, the Company may be required to accelerate, increase or cancel any remaining unrecognized or previously recorded stock-based compensation expense. For awards issued under the 2013 ESPP Plan, the Company determined that the plan was a compensatory plan and is required to expense the fair value of the awards over each six-month
Earnings per Share	Earnings per Share Basic weighted average shares outstanding includes vested, but un-issued,
Foreign Currency Translation	Foreign Currency Translation The Company prepares the financial statements of its Canadian subsidiary using the local currency as the functional currency. The assets and liabilities of the Company’s Canadian subsidiary are translated in to U.S. dollars at the rates of exchange at the balance sheet date with the resulting translation adjustments included as a separate component of stockholder’s equity through other comprehensive income (loss) in the consolidated statements of net and comprehensive income. Income and expenses are translated at the average monthly rates of exchange. The Company includes gains and losses from foreign currency transactions in other income (expense), net in the consolidated statements of net and comprehensive income. The effect of foreign currency translation on cash and cash equivalents is reflected in cash flows from operating activities on the consolidated statements of cash flows, and is not material for any period presented.
Taxes Collected From Clients and Remitted to Governmental Authorities	Taxes Collected From Clients and Remitted to Governmental Authorities The Company accounts for tax assessed by any governmental authority that is based on revenue or transaction value (i.e. sales, use and value added taxes) on a net basis, and, accordingly, such amounts are not included in revenue. Collected amounts are recorded as a current liability until paid.
Use of Estimates	Use of Estimates The preparation of 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 consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.
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 twelve months ended December 31, 2017, 2016 and 2015, the Company’s Canadian operations represented less than 1% of total revenues. During the twelve months ended December 31, 2017, 2016 and 2015 no office represented 10% or more of total revenues.
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 our 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 March 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-09. 2016-09 2016-09 As a result of the adoption, in periods subsequent to December 31, 2016, windfall tax benefits, net are recorded as a discrete item in the Company’s provision for income taxes. The Company recognized $2.9 million in windfall tax benefits, net during the year ended December 31, 2017 as a reduction in the provision for income taxes in the consolidated statements of net and comprehensive income. See Note 11 – “Income Taxes” for additional information. Prior to the adoption, any windfall tax benefits, net were recorded in additional paid in capital. Additionally, in periods subsequent to December 31, 2016, excess tax benefits for share-based payments are included in cash flows from operating activities rather than cash flows from financing activities, prior periods have not been adjusted. Further, the Company changed its accounting for forfeitures from estimating awards that are not expected to vest to recording forfeitures when they actually occur. The cumulative effect adjustment as of January 1, 2017 related to forfeitures was a charge to retained earnings of approximately $52,000 (net of tax) and is expected to have a minor impact on the timing of stock based compensation subsequent to January 1, 2017. See Note 10 – “Stock-Based Compensation Plans” for additional information. In May 2017, the FASB issued ASU No. 2017-09, Compensation 2017-09”), 2017-09 clarifies 2017-09 Pending Adoption In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers 2014-09”), 2014-09, No. 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date No. 2016-08, Revenue from Contacts with Customers: Principal Versus Agent Considerations No. 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 impacts 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 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 fixed and determinable and collectability is reasonably assured. Revenue should 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, ASU 2014-09 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

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment, Net	Property and equipment, net consisted of the following (in thousands): December 31, 2017 2016 Computer software and hardware equipment $ 16,247 $ 14,583 Furniture, fixtures, and equipment 21,695 20,066 Less: accumulated depreciation and amortization (20,789 ) (18,294 ) $ 17,153 $ 16,355

Selected Balance Sheet Data (Ta

Selected Balance Sheet Data (Tables)	12 Months Ended
	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Other Assets	Other assets consisted of the following (in thousands): Current Non-Current 2017 2016 2017 2016 Due from independent contractors, net (1) (2) $ 3,672 $ 2,231 $ 21,726 $ 8,702 Security deposits — — 1,158 1,059 Employee notes receivable (3) 366 314 255 132 Customer trust accounts and other 1,491 2,557 24 88 $ 5,529 $ 5,102 $ 23,163 $ 9,981 (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. As of December 31, 2017 and 2016, the weighted average interest rate for notes receivable due from the Company’s investment sales and financing professionals was approximately 3.5% and 3.3%, respectively. Any cash receipts on notes are applied first to unpaid principal balance prior to any income being recognized. (2) Includes allowance for doubtful accounts related to current receivables of $494 and $313 as of December 31, 2017 and 2016, respectively. The Company recorded a provision for bad debt expense of $219, $47 and $281 and wrote off $38, $93 and $115 of these receivables for the years ended December 31, 2017, 2016 and 2015, respectively. (3) See Note 7 – “Related-Party Transactions” for additional information.
Components of Deferred Compensation and Commissions	Deferred compensation and commissions consisted of the following (in thousands): Current Non-Current 2017 2016 2017 2016 SARs liability (1) $ 1,662 $ 1,366 $ 20,217 $ 20,949 Commissions payable to investment sales and financing professionals 46,257 42,781 21,924 17,101 Deferred compensation liability (1) 1,261 607 7,220 6,405 $ 49,180 $ 44,754 $ 49,361 $ 44,455 (1) The SARs and deferred compensation liability become subject to payout as a result of a participant no longer being considered as an employee or 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): December 31, 2017 2016 2015 Increase (decrease) in the carrying value of the assets held in the rabbi trust (1) $ 849 $ 470 $ (57 ) Increase (decrease) in the carrying value of the deferred compensation obligation (2) $ 904 $ 452 $ (67 ) (1) Recorded in other income (expense), net in the consolidated statements of net and comprehensive income. (2) Recorded in selling, general and administrative expense in the consolidated statements of net and comprehensive income.

Investments in Marketable Sec26

Investments in Marketable Securities (Tables)	12 Months Ended
	Dec. 31, 2017
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, December 31, 2017 December 31, 2016 Amortized Gross Gross Fair Value Amortized Gross Gross Fair Value Short-term investments: U.S. treasuries $ 57,712 $ — $ (88 ) $ 57,624 $ 24,987 $ — $ (30 ) $ 24,957 U.S. government sponsored entities 7,016 — (8 ) 7,008 2,497 — — 2,497 Corporate debt securities 8,931 — (3 ) 8,928 — — — — $ 73,659 $ — $ (99 ) $ 73,560 $ 27,484 $ — $ (30 ) $ 27,454 Long-term investments: U.S. treasuries $ 18,111 $ 7 $ (164 ) $ 17,954 $ 40,865 $ — $ (229 ) $ 40,636 U.S. government sponsored entities 5,306 — (62 ) 5,244 12,618 — (58 ) 12,560 Corporate debt securities 22,505 268 (54 ) 22,719 17,841 74 (165 ) 17,750 Asset-backed securities and other 6,180 17 (15 ) 6,182 6,557 18 (46 ) 6,529 $ 52,102 $ 292 $ (295 ) $ 52,099 $ 77,881 $ 92 $ (498 ) $ 77,475
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 December 31, 2017 December 31, 2016 Unrealized Fair Unrealized Fair Less than 12 months $ (158 ) $ 63,229 $ (491 ) $ 86,105 12 months or longer $ (236 ) $ 44,961 $ (37 ) $ 721
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 December 31, 2017 2016 Gross realized gains (1) $ 2 $ 43 Gross realized losses (1) $ — $ (166 ) (1) Recorded in other income (expense), net in the consolidated statements of net and comprehensive income. The cost basis of securities sold were determined 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, December 31, 2017 December 31, 2016 Amortized Fair Amortized Fair Due in one year or less $ 73,659 $ 73,560 $ 27,484 $ 27,454 Due after one year through five years 30,644 30,517 57,309 57,144 Due after five years through ten years 15,090 15,200 14,992 14,841 Due after ten years 6,368 6,382 5,580 5,490 $ 125,761 $ 125,659 $ 105,365 $ 104,929 Weighted average maturity 2.6 years 3.5 years

Notes Payable to Former Stock27

Notes Payable to Former Stockholders (Tables)	12 Months Ended
	Dec. 31, 2017
Payables and Accruals [Abstract]
Schedule of Accounts Payable and Accrued Expenses Pertaining to Notes	Accrued interest included in accounts payable and accrued expenses in the accompanying consolidated balance sheets pertaining to the Notes consisted of the following (in thousands): December 31, 2017 2016 Accrued interest $ 305 $ 337
Schedule of Interest Expense Pertaining to Notes	Interest expense pertaining to the Notes consisted of the following (in thousands): Years Ended December 31, 2017 2016 2015 Interest expense $ 454 $ 502 $ 548
Schedule of Future Minimum Principal Payments for Notes	Future minimum principal payments on the Notes consisted of the following (in thousands): December 31, 2017 2018 $ 1,035 2019 1,087 2020 6,564 2021 — 2022 — $ 8,686

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2017
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 in Note 2 – “Accounting Policies” and consisted of the following (in thousands): December 31, 2017 December 31, 2016 Fair Value Level 1 Level 2 Level 3 Fair Value Level 1 Level 2 Level 3 Assets held in rabbi trust $ 8,787 $ — $ 8,787 $ — $ 7,337 $ — $ 7,337 $ — Cash and cash equivalents (1) Commercial Paper $ 11,441 $ — $ 11,441 $ — $ 9,987 $ — $ 9,987 $ — Money market funds 157,788 157,788 — — 142,503 142,503 — — $ 169,229 $ 157,788 $ 11,441 $ — $ 152,490 $ 142,503 $ 9,987 $ — Marketable securities, available-for-sale: Short-term investments: U.S. Treasuries $ 57,624 $ 57,624 $ — $ — $ 24,957 $ 24,957 $ — $ — U.S. Government Sponsored Entities 7,008 — 7,008 — 2,497 — 2,497 — Corporate debt securities 8,928 — 8,928 — — — — — $ 73,560 $ 57,624 $ 15,936 $ — $ 27,454 $ 24,957 $ 2,497 $ — Long-term investments: U.S. Treasuries $ 17,954 $ 17,954 $ — $ — $ 40,636 $ 40,636 $ — $ — U.S. Government Sponsored Entities 5,244 — 5,244 — 12,560 — 12,560 — Corporate debt securities 22,719 — 22,719 — 17,750 — 17,750 — Asset-backed securities and other 6,182 — 6,182 — 6,529 — 6,529 — $ 52,099 $ 17,954 $ 34,145 $ — $ 77,475 $ 40,636 $ 36,839 $ — (1) Included in cash and cash equivalents.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Changes in Accumulated Other Comprehensive Income, Net of Income Taxes	The components of accumulated other comprehensive (loss) income as of December 31, 2017, by component, net of income taxes consisted of the following (in thousands): Unrealized gains and available- for-sale Foreign (2) Total Beginning balance, December 31, 2016 $ (255 ) $ 1,065 $ 810 Other comprehensive income (loss) before reclassifications 193 (63 ) 130 Amounts reclassified from accumulated other comprehensive (loss) income (1) — — — Net current-period other comprehensive income (loss) 193 (63 ) 130 Ending balance, December 31, 2017 $ (62 ) $ 1,002 $ 940 (1) Included as a component of other income (expense), net in the consolidated statements of net and comprehensive income. Reclassifications are determined on a specific identification basis. (2) 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. See Note 11 – “Income Taxes” for additional information.

Stock-Based Compensation Plans

Stock-Based Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2017
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 Grants to Non- Employee Directors RSU Grants to RSU Grants to Total Weighted- Nonvested shares at December 31, 2015 (1) 35,364 468,969 521,780 1,026,113 $ 21.17 Granted 14,742 239,012 81,880 335,634 23.76 Vested (20,994 ) (104,820 ) (132,309 ) (258,123 ) 19.88 Transferred — 2,062 (2,062 ) — 14.54 Forfeited/canceled — (38,743 ) (14,451 ) (53,194 ) 20.07 Nonvested shares at December 31, 2016 (1) 29,112 566,480 454,838 1,050,430 $ 22.38 Granted February 2017 — 139,013 7,272 146,285 May 2017 13,986 8,156 11,652 33,794 August 2017 3,552 7,889 51,308 62,749 November 2017 — 9,528 12,194 21,722 Total Granted 17,538 164,586 82,426 264,550 26.86 Vested (15,918 ) (140,480 ) (139,199 ) (295,597 ) 21.21 Transferred — (58,503 ) 58,503 — 25.70 Forfeited/canceled — (31,224 ) (6,304 ) (37,528 ) 23.30 Nonvested shares at December 31, 2017 (1) 30,732 500,859 450,264 981,855 $ 23.90 Unrecognized stock-based compensation expense as of December 31, 2017 (2) $ 534 $ 9,753 $ 10,030 $ 20,317 Weighted average remaining vesting period (years) as of December 31, 2017 1.71 3.13 2.65 2.86 (1) Nonvested RSU’s 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 2.86 years.
Schedule of Future Share Settlements	Future share settlements of DSUs by year consisted of the following: December 31, 2017 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 consolidated statements of net and comprehensive income consisted of the following (in thousands, except common stock price): Years Ended December 31, 2017 2016 2015 Employee stock purchase plan $ 128 $ 169 $ 285 RSAs – non-employee 397 422 319 RSUs – employees 3,750 3,130 2,351 RSUs – independent contractors (1) 4,870 3,314 4,159 $ 9,145 $ 7,035 $ 7,114 Common stock price at beginning of period $ 26.72 $ 29.14 $ 33.25 Common stock price at end of period $ 32.61 $ 26.72 $ 29.14 Increase (decrease) in stock price $ 5.89 $ (2.42 ) $ (4.11 ) (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)	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Schedule of Provision (Benefit) for Income Taxes	The provision (benefit) for income taxes consisted of the following (in thousands): Years Ended December 31, 2017 2016 2015 Income (loss) before provision for income taxes: United States $ 100,031 $ 108,797 $ 116,448 Foreign (805 ) (1,695 ) (3,080 ) $ 99,226 $ 107,102 $ 113,368 The provision (benefit) for income taxes consisted of the following: Federal: Current $ 28,993 $ 36,228 $ 39,895 Deferred 13,249 (337 ) (1,853 ) $ 42,242 $ 35,891 $ 38,042 State: Current $ 5,883 $ 6,700 $ 7,058 Deferred (423 ) (146 ) 1,918 $ 5,460 $ 6,554 $ 8,976 $ 47,702 $ 42,445 $ 47,018
Significant Components of Deferred Tax Assets (Liabilities), Net	Significant components of the Company’s deferred tax assets, net consisted of the following (in thousands): December 31, 2017 2016 Deferred Tax Assets: Accrued expenses and bonuses $ 1,307 $ 1,455 Bad debt and other reserves 1,416 2,191 Deferred compensation 12,693 19,511 Stock-based compensation 9,144 14,978 Deferred rent 1,283 1,731 Net operating and capital loss carryforwards 1,809 1,637 Other comprehensive income 6 173 State taxes 622 497 Deferred tax assets before valuation allowance 28,280 42,173 Valuation allowance (1,893 ) (1,723 ) Deferred Tax Assets $ 26,387 $ 40,450 Deferred Tax Liabilities: Fixed assets $ (2,861 ) $ (3,850 ) Prepaid expenses (886 ) (1,029 ) Deferred Tax Liabilities (3,747 ) (4,879 ) Deferred Tax Assets, Net $ 22,640 $ 35,571
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 statutory federal corporate income tax rate of 35% to income before provision for income taxes and consisted of the following (in thousands): Years Ended December 31, 2017 2016 2015 Amount Rate Amount Rate Amount Rate Income tax expense at the federal statutory rate of 35% $ 34,729 35.0 % $ 37,485 35.0 % $ 39,679 35.0 % State income tax expense, net of federal benefit 3,577 3.6 % 4,346 4.1 % 4,569 4.0 % Effect of state rate change on deferred taxes (30 ) — (79 ) (0.1 )% 1,273 1.1 % Windfall tax benefits, net of shortfalls related to stock-based compensation (2,568 ) (2.6 )% — — — — Permanent differences related to compensation charges, net of federal benefit 30 — 39 — 81 0.1 % Change in valuation allowance 170 0.2 % 412 0.4 % 583 0.5 % Effect of rate and other changes on federal deferred taxes, net due to enactment of Tax Cuts and Jobs Act 11,644 11.7 % — — — — Other 150 0.2 % 242 0.2 % 833 0.8 % $ 47,702 48.1 % $ 42,445 39.6 % $ 47,018 41.5 %

Earnings per Share (Tables)

Earnings per Share (Tables)	12 Months Ended
	Dec. 31, 2017
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 years ended December 31, 2017, 2016 and 2015 consisted of the following (in thousands, except per share data): Years Ended December 31, 2017 2016 2015 Numerator (Basic and Diluted): Net income $ 51,524 $ 64,657 $ 66,350 Denominator: Basic Weighted Average Common Shares Issued and Outstanding 38,142 37,637 37,141 Deduct: Unvested RSAs (1) (29 ) (36 ) (43 ) Add: Fully vested DSUs (2) 875 1,298 1,750 Weighted Average Common Shares Outstanding 38,988 38,899 38,848 Basic earnings per common share $ 1.32 $ 1.66 $ 1.71 Diluted Weighted Average Common Shares Outstanding from above 38,988 38,899 38,848 Add: Dilutive effect of RSUs, RSAs & ESPP 112 136 314 Weighted Average Common Shares Outstanding 39,100 39,035 39,162 Diluted earnings per common share $ 1.32 $ 1.66 $ 1.69 Antidilutive shares excluded from diluted earnings per common share (3) 512 516 79 (1) RSAs were issued and outstanding to the non-employee (2) Shares are included in weighted average common shares outstanding as the shares are fully vested but have not yet been delivered. See Note 9 – “Stockholders’ Equity” for additional information. (3) Primarily pertaining to RSU grants to the Company’s employees and independent contractors.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Lease Payments for Operating Leases	Future minimum lease payments under non-cancelable December 31, 2017 2018 $ 18,650 2019 16,468 2020 15,423 2021 12,997 2022 9,364 Thereafter 13,995 $ 86,897

Selected Quarterly Financial 34

Selected Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Data	Three Months Ended Dec. 31 Sep. 30 Jun. 30 Mar. 31 Dec. 31 Sep. 30 Jun. 30 Mar. 31 (in thousands, except per share data) Consolidated Financial Statement Data: Total revenues $ 202,776 $ 183,341 $ 180,371 $ 153,212 $ 189,157 $ 180,634 $ 183,387 $ 164,272 Cost of services 131,730 114,803 110,377 89,647 121,637 113,852 113,126 96,153 Operating income 27,403 24,683 24,998 19,048 27,906 24,905 28,832 24,858 Net income 8,480 15,475 15,569 12,000 17,174 15,144 17,524 14,815 Earnings per share: Basic $ 0.22 $ 0.40 $ 0.40 $ 0.31 $ 0.44 $ 0.39 $ 0.45 $ 0.38 Diluted $ 0.22 $ 0.39 $ 0.40 $ 0.31 $ 0.44 $ 0.39 $ 0.45 $ 0.38

Description of Business and B35

Description of Business and Basis of Presentation - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017Office
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 - Additiona

Accounting Policies - Additional Information (Detail)	Jan. 01, 2017USD ($)	Dec. 31, 2017USD ($)Financial_InstitutionsOffice	Dec. 31, 2016USD ($)Office	Dec. 31, 2015USD ($)Office
Accounting Policies [Line Items]
Number of financial institutions | Financial_Institutions		4
Allowance for commissions receivable		$ 0	$ 0
Advertising costs		$ 824,000	1,200,000	$ 1,100,000
Income tax benefit realized, percentage		50.00%
Uncertain tax positions		$ 0	0
Commission's receivable settled period		10 days
Tax benefit from stock-based award activity included in provision for income taxes		$ 2,900,000
Operating lease obligations		86,897,000
Marketable securities, available for sale		$ 125,659,000	$ 104,929,000
Employee Stock Purchase Plan [Member]
Accounting Policies [Line Items]
Length of purchase intervals		6 months
Expected dividend yield		0.00%
Forfeiture rate		0.00%
Payment of dividend		$ 0
Level 3 [Member]
Accounting Policies [Line Items]
Investments		0
Accounting Standards Update 2016-02 [Member]
Accounting Policies [Line Items]
Operating lease obligations		86,900,000
Accounting Standards Update 2016-09 [Member]
Accounting Policies [Line Items]
Tax benefit from stock-based award activity included in provision for income taxes		$ 2,900,000
Cumulative effect adjustments, net of tax	$ 52,000
Customer Concentration Risk [Member] | Total revenues [Member]
Accounting Policies [Line Items]
Concentration risk percentage		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%
Geographic Concentration Risk [Member] | Total revenues [Member]
Accounting Policies [Line Items]
Concentration risk percentage		10.00%	10.00%	10.00%
Number of offices | Office		0	0	0
Maximum [Member]
Accounting Policies [Line Items]
Property and equipment, estimated useful lives		7 years
Minimum [Member]
Accounting Policies [Line Items]
Property and equipment, estimated useful lives		3 years
Average AA Credit Rating [Member] | Accounting Standards Update 2016-13 [Member]
Accounting Policies [Line Items]
Marketable securities, available for sale		$ 125,700,000
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%

Property and Equipment, Net - S

Property and Equipment, Net - Schedule of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Less: accumulated depreciation and amortization	$ (20,789)	$ (18,294)
Property and equipment, net	17,153	16,355
Computer software and hardware equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	16,247	14,583
Furniture, fixtures, and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 21,695	$ 20,066

Property and Equipment - Additi

Property and Equipment - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Fully depreciated computer software and hardware and furniture, fixtures and equipment write-off	$ 2.9	$ 2.8

Selected Balance Sheet Data - S

Selected Balance Sheet Data - Schedule of Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other Assets [Line Items]
Other assets Current	$ 5,529	$ 5,102
Other assets Non-Current	23,163	9,981
Due from independent contractors, net [Member]
Other Assets [Line Items]
Other assets Current	3,672	2,231
Other assets Non-Current	21,726	8,702
Security deposits [Member]
Other Assets [Line Items]
Other assets Current	0	0
Other assets Non-Current	1,158	1,059
Employee Notes Receivable [Member]
Other Assets [Line Items]
Other assets Current	366	314
Other assets Non-Current	255	132
Customer trust accounts and other [Member]
Other Assets [Line Items]
Other assets Current	1,491	2,557
Other assets Non-Current	$ 24	$ 88

Selected Balance Sheet Data -40

Selected Balance Sheet Data - Schedule of Other Assets (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Assets [Line Items]
Weighted average interest rate for notes receivable	3.50%	3.30%
Allowance of doubtful accounts	$ 494	$ 313
Provision for bad debt expense	219	47	$ 281
Write-off receivables	$ 38	$ 93	$ 115
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 - C

Selected Balance Sheet Data - Components of Deferred Compensation and Commissions (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
SARs liability	$ 1,662	$ 1,366
Deferred compensation liability	1,261	607
Total	49,180	44,754
SARs liability	20,217	20,949
Deferred compensation liability	7,220	6,405
Total	49,361	44,455
Current [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Commissions payable to investment sales and financing professionals	46,257	42,781
Non-Current [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Commissions payable to investment sales and financing professionals	$ 21,924	$ 17,101

Selected Balance Sheet Data - A

Selected Balance Sheet Data - Additional Information (Detail)	Jan. 01, 2017	Jan. 01, 2016	Jan. 01, 2015	Jan. 01, 2014	Dec. 31, 2017USD ($)Installments	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Mar. 31, 2013USD ($)
Schedule Of Accrued Expenses [Line Items]
SARs frozen liability amount					$ 20,217,000	$ 20,949,000
Interest expense					$ 1,496,000	1,533,000	$ 1,726,000
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					$ 931,000	$ 914,000	$ 857,000
Treasury note term				10 years
Base spread on SARs liability variable rate				2.00%
SARs liability interest accrual rates	4.446%	4.273%	4.173%
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					$ 1,400,000
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					$ 607,000
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 -43

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	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Balance Sheet Related Disclosures [Abstract]
Increase (decrease) in the carrying value of the assets held in the rabbi trus	$ 849	$ 470	$ (57)
Increase (decrease) in the carrying value of the deferred compensation obligation	$ 904	$ 452	$ (67)

Investments in Marketable Sec44

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	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 125,761	$ 105,365
Fair Value	125,659	104,929
Short-term investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	73,659	27,484
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(99)	(30)
Fair Value	73,560	27,454
Short-term investments [Member] | U.S. Treasuries [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	57,712	24,987
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(88)	(30)
Fair Value	57,624	24,957
Short-term investments [Member] | U.S. Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	7,016	2,497
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(8)	0
Fair Value	7,008	2,497
Short-term investments [Member] | Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	8,931	0
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(3)	0
Fair Value	8,928	0
Long-term marketable securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	52,102	77,881
Gross Unrealized Gains	292	92
Gross Unrealized Losses	(295)	(498)
Fair Value	52,099	77,475
Long-term marketable securities [Member] | U.S. Treasuries [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	18,111	40,865
Gross Unrealized Gains	7	0
Gross Unrealized Losses	(164)	(229)
Fair Value	17,954	40,636
Long-term marketable securities [Member] | U.S. Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	5,306	12,618
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(62)	(58)
Fair Value	5,244	12,560
Long-term marketable securities [Member] | Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	22,505	17,841
Gross Unrealized Gains	268	74
Gross Unrealized Losses	(54)	(165)
Fair Value	22,719	17,750
Long-term marketable securities [Member] | Asset-backed securities and other [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	6,180	6,557
Gross Unrealized Gains	17	18
Gross Unrealized Losses	(15)	(46)
Fair Value	$ 6,182	$ 6,529

Investments in Marketable Sec45

Investments in Marketable Securities - Amortized Cost and Fair Value of Investments in Available for Sale Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available for sale securities continuous unrealized loss position for less than 12 months, unrealized loss	$ (158)	$ (491)
Available for sale securities continuous unrealized loss position for 12 months or longer, unrealized loss	(236)	(37)
Available for sale securities continuous unrealized loss position for less than 12 months, fair value	63,229	86,105
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value	$ 44,961	$ 721

Investments in Marketable Sec46

Investments in Marketable Securities - Gross Realized Gains and Losses from Sale of Available for Sale Securities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]
Gross realized gains	$ 2	$ 43
Gross realized losses	$ 0	$ (166)

Investments in Marketable Sec47

Investments in Marketable Securities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Gross realized loss	$ 0	$ 166,000
Investments other-than-temporarily impaired	$ 0
Sale of Available-For-Sale, Marketable Security that No Longer Met Investment Policy [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross realized loss		$ 152,000

Investments in Marketable Sec48

Investments in Marketable Securities - Schedule of Amortized Cost and Fair Value of Marketable Securities, Available-for-Sale, by Contractual Maturity (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$ 73,659	$ 27,484
Due after one year through five years, Amortized Cost	30,644	57,309
Due after five years through ten years, Amortized Cost	15,090	14,992
Due after ten years, Amortized Cost	6,368	5,580
Amortized Cost	125,761	105,365
Due in one year or less, Fair Value	73,560	27,454
Due after one year through five years, Fair Value	30,517	57,144
Due after five years through ten years, Fair Value	15,200	14,841
Due after ten years, Fair Value	6,382	5,490
Total Fair Value	$ 125,659	$ 104,929
Weighted average maturity	2 years 7 months 6 days	3 years 6 months

Notes Payable to Former Stock49

Notes Payable to Former Stockholders - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Notes Payable to Former Stockholders [Member]
Debt Instrument [Line Items]
Principal and interest payments on notes payable to former stockholders	$ 1.5	$ 1.5
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 Stock50

Notes Payable to Former Stockholders - Schedule of Accounts Payable and Accrued Expenses Pertaining to Notes (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accounts Payable and Accrued Expenses [Member]
Accounts Payable And Accrued Expenses [Line Items]
Accrued interest	$ 305	$ 337

Notes Payable to Former Stock51

Notes Payable to Former Stockholders - Schedule of Interest Expense Pertaining to Notes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Interest Expense [Line Items]
Interest expense	$ 1,496	$ 1,533	$ 1,726
Notes Payable to Former Stockholders [Member]
Interest Expense [Line Items]
Interest expense	$ 454	$ 502	$ 548

Notes Payable to Former Stock52

Notes Payable to Former Stockholders - Schedule of Future Minimum Principal Payments for Notes (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other Notes Payable Future Minimum Principal Payments [Abstract]
2,018	$ 1,035	$ 986
2,019	1,087
2,020	6,564
2,021	0
2,022	0
Total	$ 8,686

Related-Party Transactions - Ad

Related-Party Transactions - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Rent expense for lease	$ 25,600,000	$ 23,400,000	$ 17,800,000
Aggregate principal amount for employee notes receivable	621,000	446,000
MMC [Member]
Related Party Transaction [Line Items]
Real estate brokerage commissions and financing fees from transactions with subsidiaries of Marcus & Millichap Company	2,100,000	5,100,000	2,700,000
Commission expenses for transactions with subsidiaries of Marcus & Millichap Company	1,200,000	3,000,000	1,600,000
Rent expense for lease	$ 1,000,000	1,000,000	693,500
Lease expiration date	May 31, 2022
Accounts payable and other accrued expenses - related party	$ 91,000	303,000
MMC [Member] | Transition Services Agreement [Member]
Related Party Transaction [Line Items]
Selling, general and administrative expense	$ 210,000	$ 227,000	$ 257,000
Transition services agreement date	Oct. 1, 2013
George M. Marcus [Member]
Related Party Transaction [Line Items]
Beneficial ownership percentage	49.00%

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Assets at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held in rabbi trust	$ 8,787	$ 7,337
Marketable securities, available for sale	125,659	104,929
Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	73,560	27,454
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	57,624	24,957
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	7,008	2,497
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	8,928	0
Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	52,099	77,475
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	17,954	40,636
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	5,244	12,560
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	22,719	17,750
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	6,182	6,529
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	169,229	152,490
Recurring [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	11,441	9,987
Recurring [Member] | Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	157,788	142,503
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	8,787	7,337
Recurring [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	73,560	27,454
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	57,624	24,957
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	7,008	2,497
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	8,928	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	52,099	77,475
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	17,954	40,636
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	5,244	12,560
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	22,719	17,750
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	6,182	6,529
Level 1 [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	157,788	142,503
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	157,788	142,503
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	57,624	24,957
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	57,624	24,957
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] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	17,954	40,636
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	17,954	40,636
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	11,441	9,987
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	11,441	9,987
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	8,787	7,337
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	15,936	2,497
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	7,008	2,497
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	8,928	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	34,145	36,839
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	5,244	12,560
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	22,719	17,750
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	6,182	6,529
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] | 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)	Dec. 31, 2017USD ($)
Fair Value Disclosures [Abstract]
Fair value, assets, level 1 to level 2 transfers, amount	$ 0
Fair value, assets, level 2 to level 1 transfers, amount	$ 0

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Equity [Abstract]
Common stock, shares issued	38,374,011	37,882,266
Common stock, shares outstanding	38,374,011	37,882,266
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
Undistributed earnings of foreign subsidiary	$ 0

Stockholders' Equity - Changes

Stockholders' Equity - Changes in Accumulated Other Comprehensive Income, Net of Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, December 31, 2016	$ 810
Other comprehensive income (loss) before reclassifications	130
Amounts reclassified from accumulated other comprehensive (loss) income	0
Net current-period other comprehensive income (loss)	130	$ 353	$ 298
Ending balance, December 31, 2017	940	810
Unrealized gains and (losses) of available-for-sale securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, December 31, 2016	(255)
Other comprehensive income (loss) before reclassifications	193
Amounts reclassified from accumulated other comprehensive (loss) income	0
Net current-period other comprehensive income (loss)	193
Ending balance, December 31, 2017	(62)	(255)
Foreign currency translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, December 31, 2016	1,065
Other comprehensive income (loss) before reclassifications	(63)
Amounts reclassified from accumulated other comprehensive (loss) income	0
Net current-period other comprehensive income (loss)	(63)
Ending balance, December 31, 2017	$ 1,002	$ 1,065

Stock-Based Compensation Plan58

Stock-Based Compensation Plans - 2013 Omnibus Equity Incentive Plan - Award Limitations - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017Incentive_Planshares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Common stock shares reserved for issuance of awards	5,500,000
Common stock shares available for grant	5,586,917
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 Plan59

Stock-Based Compensation Plans - 2013 Omnibus Equity Incentive Plan - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Vested shares	295,597	258,123
Tax benefit from stock-based award activity included in provision for income taxes	$ 2,900
Tax benefit from stock-based award activity included in additional paid-in capital		$ 2,711	$ 6,173
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] | Restricted Stock Awards [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	279,679	5,158
Number of common stock shares withheld to pay employee statutory withholding taxes	55,289
Vested and delivered shares	284,837
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
2013 Omnibus Equity Incentive Plan [Member] | Deferred stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common stock shares withheld to pay employee statutory withholding taxes	137,351
Issuance of common stock for settlement of deferred stock units	351,801
Fair value of shares vested	$ 10,200	$ 10,400	18,600
Fully vested deferred stock units remaining outstanding	578,618	930,419
2013 Omnibus Equity Incentive Plan [Member] | Restricted Stock Units and Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of shares vested	$ 7,800	$ 7,000	$ 7,500

Stock-Based Compensation Plan60

Stock-Based Compensation Plans - Outstanding Awards Under 2013 Omnibus Equity Incentive Plan (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended				12 Months Ended
	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares at December 31, 2015					1,050,430	1,026,113
Granted	21,722	62,749	33,794	146,285	264,550	335,634
Vested					(295,597)	(258,123)
Transferred					0	0
Forfeited/canceled					(37,528)	(53,194)
Nonvested shares at December 31, 2016					981,855	1,050,430
Nonvested weighted average grant date fair value per share, beginning balance					$ 22.38	$ 21.17
Unrecognized stock-based compensation expense as of December 31, 2017					$ 20,317
Weighted average grant date fair value per share, Granted					$ 26.86	23.76
Weighted average remaining vesting period (years) as of December 31, 2017					2 years 10 months 10 days
Weighted average grant date fair value, Vested					$ 21.21	19.88
Weighted average grant date fair value, Transferred					25.70	14.54
Weighted average grant date fair value, Forfeited/canceled					23.30	20.07
Nonvested weighted average grant date fair value per share, ending balance					$ 23.90	$ 22.38
Restricted Stock Awards [Member] | Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares at December 31, 2015					29,112	35,364
Granted	0	3,552	13,986	0	17,538	14,742
Vested					(15,918)	(20,994)
Transferred					0	0
Forfeited/canceled					0	0
Nonvested shares at December 31, 2016					30,732	29,112
Unrecognized stock-based compensation expense as of December 31, 2017					$ 534
Weighted average remaining vesting period (years) as of December 31, 2017					1 year 8 months 16 days
Restricted Stock Units [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares at December 31, 2015					566,480	468,969
Granted	9,528	7,889	8,156	139,013	164,586	239,012
Vested					(140,480)	(104,820)
Transferred					(58,503)	2,062
Forfeited/canceled					(31,224)	(38,743)
Nonvested shares at December 31, 2016					500,859	566,480
Unrecognized stock-based compensation expense as of December 31, 2017					$ 9,753
Weighted average remaining vesting period (years) as of December 31, 2017					3 years 1 month 16 days
Restricted Stock Units [Member] | Independent Contractors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares at December 31, 2015					454,838	521,780
Granted	12,194	51,308	11,652	7,272	82,426	81,880
Vested					(139,199)	(132,309)
Transferred					58,503	(2,062)
Forfeited/canceled					(6,304)	(14,451)
Nonvested shares at December 31, 2016					450,264	454,838
Unrecognized stock-based compensation expense as of December 31, 2017					$ 10,030
Weighted average remaining vesting period (years) as of December 31, 2017					2 years 7 months 24 days

Stock-Based Compensation Plan61

Stock-Based Compensation Plans - Schedule of Future Share Settlements (Detail) - 2013 Omnibus Equity Incentive Plan [Member] - Deferred stock units [Member] - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
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	930,419

Stock-Based Compensation Plan62

Stock-Based Compensation Plans - Employee Stock Purchase Plan - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares available for issuance	5,586,917
Unrecognized stock-based compensation expense	$ 20,317,000
Unrecognized stock-based compensation expenses recognition period	2 years 10 months 10 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	246,895	277,104
Unrecognized stock-based compensation expense	$ 58,000
Unrecognized stock-based compensation expenses recognition period	4 months 13 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 2013 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.

Stock-Based Compensation Plan63

Stock-Based Compensation Plans - Amendments to Restricted Stock and SARs - Additional Information (Detail) - shares	Oct. 30, 2013	Dec. 31, 2017
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 Plan64

Stock-Based Compensation Plans - Summary of Stock-Based Compensation - Additional Information (Detail)	Jan. 01, 2017USD ($)
Accounting Standards Update 2016-09 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative effect adjustment to retained earnings, net of tax	$ 52,000

Stock-Based Compensation Plan65

Stock-Based Compensation Plans - Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense - Independent contractors	$ 4,870	$ 3,314	$ 4,159
Allocated share-based compensation expense	9,145	7,035	7,114
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	128	169	285
Restricted Stock Awards [Member] | Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	397	422	319
Restricted Stock Units [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 3,750	$ 3,130	$ 2,351

Stock-Based Compensation Plan66

Stock-Based Compensation Plans - Changes in Company's Common Stock Price During Reporting Period (Detail) - Stock Based Compensation Expense [Member] - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock price at beginning of period	$ 26.72	$ 29.14	$ 33.25
Common stock price at end of period	32.61	26.72	29.14
Increase (decrease) in stock price	$ 5.89	$ (2.42)	$ (4.11)

Income Taxes - Schedule of Prov

Income Taxes - Schedule of Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income (loss) before provision for income taxes:
Income before provision for income taxes	$ 99,226	$ 107,102	$ 113,368
Federal:
Current	28,993	36,228	39,895
Deferred	13,249	(337)	(1,853)
Provision for Income Taxes, Federal	42,242	35,891	38,042
State:
Current	5,883	6,700	7,058
Deferred	(423)	(146)	1,918
Provision for Income Taxes, State	5,460	6,554	8,976
Provision for income taxes	47,702	42,445	47,018
United States [Member]
Income (loss) before provision for income taxes:
Income before provision for income taxes	100,031	108,797	116,448
Foreign [Member]
Income (loss) before provision for income taxes:
Income before provision for income taxes	$ (805)	$ (1,695)	$ (3,080)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Line Items]
Tax computed at federal rate, percentage			35.00%	35.00%	35.00%
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Provisional Income Tax Expense	$ 11,600,000		$ 11,644,000	$ 0	$ 0
State and Canadian net operating losses (NOLs)	7,800,000		$ 7,800,000	6,400,000
State and Canadian net operating losses (NOLs), expiration year			2,019
Valuation allowance, deferred tax assets	1,900,000		$ 1,900,000	1,700,000
Change in valuation allowance, deferred tax assets			170,000	412,000	583,000
Tax benefit from stock-based award activity included in additional paid-in capital				2,711,000	$ 6,173,000
Uncertain tax positions	0		0	0
Unrecognized tax benefits related interest or penalties			$ 0	$ 0
Income Tax Examination, Description			The Company is not currently under income tax examination by any taxing authorities.
Undistributed earnings of foreign subsidiary	$ 0		$ 0
Minimum [Member]
Income Taxes [Line Items]
Open tax years subject to tax examinations			2,013
Maximum [Member]
Income Taxes [Line Items]
Open tax years subject to tax examinations			2,017
Scenario, Forecast [Member]
Income Taxes [Line Items]
Tax computed at federal rate, percentage		21.00%

Income Taxes - Significant Comp

Income Taxes - Significant Components of Deferred Tax Assets (Liabilities), Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred Tax Assets:
Accrued expenses and bonuses	$ 1,307	$ 1,455
Bad debt and other reserves	1,416	2,191
Deferred compensation	12,693	19,511
Stock-based compensation	9,144	14,978
Deferred rent	1,283	1,731
Net operating and capital loss carryforwards	1,809	1,637
Other comprehensive income	6	173
State taxes	622	497
Deferred tax assets before valuation allowance	28,280	42,173
Valuation allowance	(1,893)	(1,723)
Deferred Tax Assets	26,387	40,450
Deferred Tax Liabilities:
Fixed assets	(2,861)	(3,850)
Prepaid expenses	(886)	(1,029)
Deferred Tax Liabilities	(3,747)	(4,879)
Deferred Tax Assets, Net	$ 22,640	$ 35,571

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	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income tax expense at the federal statutory rate of 35%, amount		$ 34,729	$ 37,485	$ 39,679
State income tax expense, net of federal benefit, amount		3,577	4,346	4,569
Effect of state rate change on deferred taxes, amount		(30)	(79)	1,273
Windfall tax benefits, net of shortfalls related to stock-based compensation,amount		(2,568)	0	0
Permanent differences related to compensation charges, net of federal benefit, amount		30	39	81
Change in valuation allowance, amount		170	412	583
Effect of rate and other changes on federal deferred taxes, net due to enactment of Tax Cuts and Jobs Act, amount	$ 11,600	11,644	0	0
Other, amount		150	242	833
Provision for income taxes		$ 47,702	$ 42,445	$ 47,018
Income tax expense at the federal statutory rate of 35%, rate		35.00%	35.00%	35.00%
State income tax expense, net of federal benefit, rate		3.60%	4.10%	4.00%
Effect of state rate change on deferred taxes, rate		0.00%	(0.10%)	1.10%
Windfall tax benefits, net of shortfalls related to stock-based compensation		(2.60%)	0.00%	0.00%
Permanent differences related to compensation charges, net of federal benefit, rate		0.00%	0.00%	0.10%
Change in valuation allowance, rate		0.20%	0.40%	0.50%
Effect of rate and other changes on federal deferred taxes, net due to enactment of Tax Cuts and Jobs Act, rate		11.70%	0.00%	0.00%
Other, rate		0.20%	0.20%	0.80%
Provision for income taxes, rate		48.10%	39.60%	41.50%

Retirement Plans - Additional I

Retirement Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, new plan effective date	2014-01
Contribution Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan minimum eligible period	Have completed one month of service.
Defined contribution plan, maximum percentage of employee contribution	100.00%
Defined contribution plan, percentage of employer matching contribution percent of match	50.00%
Defined contribution plan, employer contribution percentage	8.00%
Defined contribution plan, maximum annual employer contribution per employee	$ 4,000
Defined contribution plan, matching contributions aggregated	$ 733,000	$ 628,000	$ 570,000

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								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Numerator (Basic and Diluted):
Net income	$ 8,480	$ 15,475	$ 15,569	$ 12,000	$ 17,174	$ 15,144	$ 17,524	$ 14,815	$ 51,524	$ 64,657	$ 66,350
Denominator:
Weighted Average Common Shares Issued and Outstanding									38,142	37,637	37,141
Deduct: Unvested RSAs									(29)	(36)	(43)
Add: Fully vested DSUs									875	1,298	1,750
Weighted Average Common Shares Outstanding									38,988	38,899	38,848
Basic earnings per common share	$ 0.22	$ 0.40	$ 0.40	$ 0.31	$ 0.44	$ 0.39	$ 0.45	$ 0.38	$ 1.32	$ 1.66	$ 1.71
Weighted Average Common Shares Outstanding from above									38,988	38,899	38,848
Add: Dilutive effect of RSUs, RSAs & ESPP									112	136	314
Weighted Average Common Shares Outstanding									39,100	39,035	39,162
Diluted earnings per common share	$ 0.22	$ 0.39	$ 0.40	$ 0.31	$ 0.44	$ 0.39	$ 0.45	$ 0.38	$ 1.32	$ 1.66	$ 1.69
Antidilutive shares excluded from diluted earnings per common share									512	516	79
Vesting period									3 years

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Future Minimum Lease Payments for Operating Leases (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,018	$ 18,650
2,019	16,468
2,020	15,423
2,021	12,997
2,022	9,364
Thereafter	13,995
Operating Leases, Future Minimum Payments Due, Total	$ 86,897

Commitments and Contingencies74

Commitments and Contingencies - Additional Information Operating Leases (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Deferred rent	$ 4.8	$ 4.3
Rental expense	$ 25.6	$ 23.4	$ 17.8

Commitments and Contingencies75

Commitments and Contingencies - Additional Information Credit Agreement (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Senior secured revolving credit facility maximum borrowing capacity	$ 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
Standby letters of credit, utilized amount	$ 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	$ 1,496,000	$ 1,533,000	$ 1,726,000
Credit agreement, amount outstanding	$ 0
Credit facility covenants	(i) an EBITDAR Coverage Ratio (as defined in the Credit Agreement) of not less than 1.251.0 as of each quarter end and (ii) total funded debt to EBITDA not greater than 2.01.0
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 December 31, 2017, 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	$ 110,000	$ 116,000	$ 130,000
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 Contingencies76

Commitments and Contingencies - Additional Information Other (Detail) $ in Millions	Dec. 31, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
Other commitment amount	$ 2.9

Selected Quarterly Financial 77

Selected Quarterly Financial Data - Schedule of Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consolidated Financial Statement Data:
Total revenues	$ 202,776	$ 183,341	$ 180,371	$ 153,212	$ 189,157	$ 180,634	$ 183,387	$ 164,272	$ 719,700	$ 717,450	$ 689,055
Cost of services	131,730	114,803	110,377	89,647	121,637	113,852	113,126	96,153	446,557	444,768	423,389
Operating income	27,403	24,683	24,998	19,048	27,906	24,905	28,832	24,858	96,132	106,501	114,651
Net income	$ 8,480	$ 15,475	$ 15,569	$ 12,000	$ 17,174	$ 15,144	$ 17,524	$ 14,815	$ 51,524	$ 64,657	$ 66,350
Earnings per share:
Basic	$ 0.22	$ 0.40	$ 0.40	$ 0.31	$ 0.44	$ 0.39	$ 0.45	$ 0.38	$ 1.32	$ 1.66	$ 1.71
Diluted	$ 0.22	$ 0.39	$ 0.40	$ 0.31	$ 0.44	$ 0.39	$ 0.45	$ 0.38	$ 1.32	$ 1.66	$ 1.69