Marcus & Millichap (MMI) 10-K 1 Mar 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Feb. 19, 2019	Jun. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
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	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		38,975,984
Entity Public Float			$ 814.9

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 214,683	$ 220,786
Commissions receivable	4,948	9,586
Prepaid expenses	7,904	9,661
Income tax receivable		1,308
Marketable securities, available-for-sale	137,436	73,560
Other assets, net	6,368	5,529
Total current assets	371,339	320,430
Prepaid rent	13,892	15,392
Property and equipment, net	19,550	17,153
Marketable securities, available-for-sale	83,209	52,099
Assets held in rabbi trust	8,268	8,787
Deferred tax assets, net	22,959	22,640
Goodwill and other intangible assets, net	15,385	0
Other assets	31,778	23,163
Total assets	566,380	459,664
Current liabilities:
Accounts payable and other liabilities	11,035	9,202
Notes payable to former stockholders	1,087	1,035
Deferred compensation and commissions	47,910	49,180
Income tax payable	4,486
Accrued bonuses and other employee related expenses	28,338	23,842
Total current liabilities	92,856	83,259
Deferred compensation and commissions	49,887	49,361
Notes payable to former stockholders	6,564	7,651
Deferred rent and other liabilities	7,499	4,505
Total liabilities	156,806	144,776
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.0001 par value: Authorized shares - 25,000,000; issued and outstanding shares - none at December 31, 2018 and 2017, respectively
Common stock, $0.0001 par value: Authorized shares - 150,000,000; issued and outstanding shares - 38,814,464 and 38,374,011 at December 31, 2018 and 2017, respectively	4	4
Additional paid-in capital	97,458	89,877
Stock notes receivable from employees	(4)	(4)
Retained earnings	311,341	224,071
Accumulated other comprehensive income	775	940
Total stockholders' equity	409,574	314,888
Total liabilities and stockholders' equity	$ 566,380	$ 459,664

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	25,000,000	25,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	38,814,464	38,374,011
Common stock, shares outstanding	38,814,464	38,374,011

CONSOLIDATED STATEMENTS OF NET

CONSOLIDATED STATEMENTS OF NET AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Revenue	$ 814,816	$ 719,700	$ 717,450
Operating expenses:
Cost of services	502,883	446,557	444,768
Selling, general and administrative expense	193,349	171,648	161,794
Depreciation and amortization expense	6,297	5,363	4,387
Total operating expenses	702,529	623,568	610,949
Operating income	112,287	96,132	106,501
Other income (expense), net	6,333	4,590	2,134
Interest expense	(1,400)	(1,496)	(1,533)
Income before provision for income taxes	117,220	99,226	107,102
Provision for income taxes	29,963	47,702	42,445
Net income	87,257	51,524	64,657
Marketable securities, available-for-sale:
Change in unrealized (losses) gains	(536)	193	403
Less: reclassification adjustment for net losses (gains) included in other income (expense), net	7		(90)
Net change, net of tax of $(177), $139 and $197 for the years ended December 31, 2018, 2017 and 2016, respectively	(529)	193	313
Foreign currency translation gain (loss), net of tax of $0 for each of the years ended December 31, 2018, 2017 and 2016, respectively	377	(63)	40
Total other comprehensive (loss) income	(152)	130	353
Comprehensive income	$ 87,105	$ 51,654	$ 65,010
Earnings per share:
Basic	$ 2.23	$ 1.32	$ 1.66
Diluted	$ 2.22	$ 1.32	$ 1.66
Weighted average common shares outstanding:
Basic	39,149	38,988	38,899
Diluted	39,383	39,100	39,035
Real Estate Brokerage Commissions [Member]
Revenues:
Revenue	$ 747,355	$ 649,393	$ 662,220
Financing Fees [Member]
Revenues:
Revenue	57,817	49,653	43,444
Other Revenues [Member]
Revenues:
Revenue	$ 9,644	$ 20,654	$ 11,786

CONSOLIDATED STATEMENTS OF NE_2

CONSOLIDATED STATEMENTS OF NET AND COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Marketable securities net change, tax	$ (177)	$ 139	$ 197
Foreign currency translation (loss) gain, tax	$ 0	$ 0	$ 0

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS 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 (Loss) [Member]
Beginning Balance at Dec. 31, 2015	$ 188,990	$ 0	$ 4	$ 80,591	$ (4)	$ 107,942	$ 457
Beginning 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			(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			37,882,266
Balance as adjusted at Dec. 31, 2016	258,887	$ 0	$ 4	85,530	(4)	172,547	810
Balance as adjusted, Shares at Dec. 31, 2016		0	37,882,266,000
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
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
Cumulative effect of a change in accounting principle, net of tax	33	$ 0	$ 0	85	0	(52)	0
Balance as adjusted at Dec. 31, 2017	314,888	$ 0	$ 4	89,877	(4)	224,084	927
Balance as adjusted, Shares at Dec. 31, 2017		0	38,374,011
Net and comprehensive income	87,105	$ 0	$ 0	0	0	87,257	(152)
Stock-based compensation	11,983	$ 0	$ 0	11,983	0	0	0
Stock-based compensation, Shares		0	0
Issuance of common stock pursuant to employee stock purchase plan	621	$ 0	$ 0	621	0	0	0
Shares issued pursuant to employee stock purchase plan, Shares		0	21,001
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	237,052
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	317,236
Issuance of common stock for unvested restricted stock awards	0	$ 0	$ 0	0	0	0	0
Issuance of common stock for unvested restricted stock awards, Shares		0	12,852
Shares withheld related to net share settlement of stock-based awards	(5,023)	$ 0	$ 0	(5,023)	0	0	0
Shares withheld related to net share settlement of stock-based awards, shares		0	(147,688)
Ending Balance at Dec. 31, 2018	409,574	$ 0	$ 4	97,458	(4)	311,341	775
Ending Balance, Shares at Dec. 31, 2018		0	38,814,464
Cumulative effect of a change in accounting principle, net of tax	$ 0	$ 0	$ 0	$ 0	$ 0	$ 13	$ (13)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities
Net income	$ 87,257	$ 51,524	$ 64,657
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	6,297	5,363	4,387
Provision for bad debt expense	291	219	47
Stock-based compensation	11,983	9,145	7,035
Deferred taxes, net	(142)	12,825	(483)
Net realized (gains) losses on marketable securities, available-for-sale	(10)	(2)	123
Tax benefit from stock-based award activity	0	0	2,711
Excess tax benefit from stock-based award activity	0	0	(2,711)
Other non-cash items	(194)	108	444
Changes in operating assets and liabilities:
Commissions receivable	4,783	(4,777)	(1,467)
Prepaid expenses	1,757	(1,567)	(552)
Prepaid rent	1,500	(2,107)	(4,210)
Assets held in rabbi trust	0	(700)	(1,263)
Other assets, net	(7,247)	(13,665)	(803)
Accounts payable and other liabilities	226	(572)	964
Income tax receivable/payable	5,794	(126)	2,867
Accrued bonuses and other employee related expenses	4,676	1,782	(8,218)
Deferred compensation and commissions	(438)	8,427	10,988
Deferred rent and other liabilities	781	660	(30)
Net cash provided by operating activities	117,314	66,537	74,486
Cash flows from investing activities
Acquisitions, net of cash received	(14,926)	0	0
Purchases of marketable securities, available-for-sale	(208,460)	(65,093)	(107,898)
Proceeds from sales and maturities of marketable securities, available-for-sale	113,911	44,753	137,593
Payments received on employee notes receivable	18	27	12
Issuances of employee notes receivable	(451)	(481)	(455)
Purchase of property and equipment	(8,072)	(6,554)	(9,473)
Proceeds from sale of property and equipment	0	10	40
Net cash (used in) provided by investing activities	(117,980)	(27,338)	19,819
Cash flows from financing activities
Proceeds from issuance of shares pursuant to employee stock purchase plan	621	653	673
Taxes paid related to net share settlement of stock-based awards	(5,023)	(5,451)	(5,565)
Excess tax benefit from stock-based award activity	0	0	2,711
Principal payments on notes payable to former stockholders	(1,035)	(986)	(938)
Net cash used in financing activities	(5,437)	(5,784)	(3,119)
Net (decrease) increase in cash and cash equivalents	(6,103)	33,415	91,186
Cash and cash equivalents at beginning of year	220,786	187,371	96,185
Cash and cash equivalents at end of year	214,683	220,786	187,371
Supplemental disclosures of cash flow information
Interest paid during the period	2,195	1,912	628
Income taxes paid, net	24,311	35,002	37,350
Supplemental disclosures of noncash investing and financing activities
Reduction of accrued bonuses and other employee related expenses in settlement of employee notes receivable	192	243	325
Property and equipment additions incurred but not yet paid included in accounts payable and other liabilities	27	(359)	34
Contingent consideration and deferred payments in connection with acquisitions	$ 3,727	$ 0	$ 0

Description of Business and Bas

Description of Business and Basis of Presentation	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Description of Business and Basis of Presentation	1. Description of Business and Basis of Presentation Description of Business Marcus & Millichap, Inc., (the “Company”, “Marcus & Millichap”, or “MMI”), a Delaware corporation, is a brokerage firm specializing in commercial real estate investment sales, financing, research and advisory services. As of December 31, 2018, MMI operates 80 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. 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. Reclassifications Certain prior-period amounts in Note 12 – “Income Taxes” have been reclassified to conform to the current period presentation. These changes had no impact on the previously reported consolidated results of operations or any totals or subtotals therein.

Accounting Policies and Recent

Accounting Policies and Recent Accounting Pronouncements	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Accounting Policies and Recent Accounting Pronouncements	2. Accounting Policies and Recent Accounting Pronouncements 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, 2018 and 2017, portions of the balance of cash and cash equivalents were held in five 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 cash and cash equivalents, including 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. The Company generates financing fees from securing financing on purchase transactions, and we also earn fees from refinancing its clients’ existing mortgage debt and other financing activities, including mortgage servicing. Other revenues include fees generated from consulting and advisory services, as well as referral fees from other real estate brokers. The Company’s contracts contain one performance obligation related to its real estate brokerage, financing and consulting and advisory services offered to buyers and sellers of commercial real estate, and provide that it is operating as a principal in all its revenue generating activities. The Company does not have multiple-element arrangements, variable consideration, financing components, significant noncash consideration, licenses, long-term contracts with customers or other items affecting the transaction price. Accordingly, the Company determined that the transaction price is fixed and determinable and collectability is reasonably assured. The Company recognizes revenue in principally all cases at the close of escrow for real estate brokerage, at the close of loan for financing, when services are provided, or upon closing of the transaction for other revenues. Mortgage Servicing Rights and Fees Mortgage servicing rights (“MSRs”) are recorded at fair value upon acquisition of a servicing contract based on internal models using contractual information and the assumptions of a market participant. The Company has elected the amortization method for the subsequent measurement of MSRs. MSRs are carried at the lower of amortized cost or fair value. All MSRs are amortized using the interest method over the period that servicing income is expected to be received. MSRs are included in other assets non-current In connection with MSRs activities, the Company holds funds in escrow for the benefit of the lenders. These funds, which totaled $2.1 million and $0 as of December 31, 2018 and 2017, respectively and the offsetting obligations, are not presented in the Company’s financial statements as they do not represent assets and liabilities of the Company. Revenue from the fees on such accounts is included in financing revenue in the consolidated statements of net and comprehensive income. We recognize mortgage servicing revenues upon the acquisition of a servicing contract. The Company records servicing fees when earned provided the loans are current and the debt service payments are made by the borrowers. MSRs and related servicing fees are recorded in financing fees in the accompanying consolidated statements of net and comprehensive income. Capitalization of Internal Labor Certain costs related to the development or purchase of internal-use 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, 2018 and 2017. 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. Commissions are 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 that 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 financial condition of the issuer and any changes thereto, changes in market interest rates and 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. The Company typically invests in highly-rated securities, and its investment policy generally limits the amount of credit exposure to any one issuer. The policy generally requires investments to be investment grade, with the primary objective of minimizing the potential risk of principal loss and matching long-term liabilities. Assets Held in Rabbi Trust The Company maintains a non-qualified Fair Value Measurements U.S. GAAP defines the fair value of a financial instrument as the amount that would be received from the sale of an asset in an orderly transaction between market participants at the measurement date. The Company is responsible for the determination of fair value and the supporting methodologies and assumptions. The Company uses various pricing sources and third parties to provide and validate the values utilized. The degree of judgment used in measuring the fair value of financial instruments is generally inversely correlated with the level of observable valuation inputs. Financial instruments with quoted prices in active markets generally have more pricing observability and less judgment is used in measuring fair value. Financial instruments for which no quoted prices are available have less observability, and are measured at fair value using valuation models or other pricing techniques that require more judgment. Assets recorded at fair value are measured and classified in accordance with a fair value hierarchy consisting of the three “levels” based on the observability of inputs available in the marketplace used to measure the fair values as discussed below: • Level 1: • Level 2: • Level 3: Recurring Fair Value Measurements The Company values its investments including commercial paper and floating NAV money market funds recorded in cash and cash equivalents, investments in marketable securities, available-for-sale, available-for-sale Fair values for assets held in the Rabbi Trust and related deferred compensation liability were determined based on the underlying investments in the trust and are measured as Level 2 and Level 1, respectively. Contingent consideration in connection with acquisitions is carried at fair value, and determined on a contract-by-contract The Company values MSRs at fair value upon acquisition of a servicing contract. MSRs do not trade in an active, open market with readily observable prices, and are measured as Level 3. The estimated fair value of the Company’s MSRs are developed using discounted cash flow models that calculate the present value of estimated future net servicing income. The life of the underlying loan is estimated giving consideration to the contractually specified servicing fees, prepayment assumptions, delinquency rates, late charges, other ancillary revenue, costs to service and other economic factors. The Company’s model assumes full prepayment of the loan at or near the point where the prepayment provisions have expired. The MSRs have principally similar risk characteristics. The assumptions used to estimate the fair value of MSRs are based on internal models and are periodically compared to assumptions used by other market participants. Due to the relatively few transactions in the MSR market, the Company experienced little volatility in the assumptions used during the periods presented. Additionally, the Company does not expect to see much volatility in the assumptions for the foreseeable future. Management actively monitors the assumptions used and makes adjustments to those assumptions when market conditions change, or other factors indicate such adjustments are warranted. The Company periodically reassesses and adjusts, when necessary, the underlying inputs and assumptions used in the model to reflect observable market conditions and assumptions that a market participant would consider in valuing an MSR asset. The Company carries MSRs at the lower of amortized cost or fair value and evaluates the carrying value for impairment quarterly. The Company engages a third party to assist in determining the estimated fair value of its existing MSRs quarterly. Nonrecurring Fair Value Measurements The Company reviews the carrying value of MSRs, intangibles, goodwill and other assets for indications of impairment quarterly. When indications of potential impairment are identified, the Company may be required to determine the fair value of those assets and record an adjustment for the carrying amount in excess of the fair value determined. Any fair value determination would be based on valuation approaches appropriate in the circumstances and utilize Level 2 and Level 3 measurements as required. 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 the other assets, net current and other assets non-current non-current The Company’s obligations under notes payable to former stockholders bear interest at fixed 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 the 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, MSRs, security deposits made in connection with operating leases, customer trust accounts, employee notes receivable and other assets and 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, which will generally be ratably over a contracted service period, or in reaching contractual performance criteria. 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 other liabilities, 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 potential 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 the accounts payable and other liabilities and deferred rent and other liabilities captions). The Company typically leases general purpose built-out 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 proceedings cannot be determined, the Company uses judgment in the evaluation of claims and the need for accrual for loss contingencies quarterly. The Company records an accrual for litigation related losses where the likelihood of loss is both probable and estimable. The Company accrues legal fees for litigation as the legal services are provided. 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, 2018, 2017 and 2016 were $1.1 million, $824,000 and $1.2 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 (i) differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis, and (ii) 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 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 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 Company evaluates its tax positions quarterly. 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 After adoption of Accounting Standards Update (“ASU”) No. 2016-09, Improvements to Employee Share-Based Payment Accounting 2016-09”) 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. The Company adopted ASU No. 2018-7, Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting 2018-7”) 2018-7, 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 shares issued under the ESPP, 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 (e.g. 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 period. 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 money market funds that represent amounts in 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, 2018, 2017 and 2016, the Company’s Canadian operations represented less than 1% of total revenues. During the twelve months ended December 31, 2018, 2017 and 2016, no office represented 10% or more of total revenues. Business Combinations The Company accounts for business combinations using the acquisition method of accounting, under which the consideration for the acquisition, including the fair value of any contingent consideration, is allocated to the assets acquired and liabilities assumed. The Company recognizes identifiable assets acquired and liabilities assumed (both specific and contingent) at their acquisition date fair values as determined by management as of the acquisition date. Acquisition-related costs, such as due diligence, legal and accounting fees, are expensed as incurred and not considered in determining the fair value of the acquired assets. The excess of the consideration over the assets acquired net of liabilities assumed is recognized as goodwill. Adjustments to contingent consideration in periods subsequent to the completion of acquisitions and acquisition-related costs are reflected in selling, general and administrative expense in the consolidated statements of net and comprehensive income. Goodwill The Company evaluates goodwill for impairment annually in the fourth quarter. In addition to the annual impairment evaluation, the Company evaluates at least quarterly whether events or circumstances have occurred in the period subsequent to the annual impairment testing which indicate that it is more likely than not an impairment loss has occurred. The Company currently has only one reporting unit, therefore, all goodwill is allocated to that one reporting unit. Intangible Assets The Company’s intangible assets primarily include non-compete Segment Reporting The Company follows U.S. GAAP 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 (including MSRs revenue) and consulting and advisory services. Management makes operating decisions, assesses performance and allocates resources based on an ongoing review of these integrated operations, which constitute the Company’s only operating segment for financial reporting purposes. Recent Accounting Pronouncements Adopted In May 2014, the Financial Accounting Standards Board (“FASB”) issued 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 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 impact of the standard and determined that its contracts contain one performance obligation related to its real estate brokerage, financing and consulting and advisory services offered to buyers and sellers of commercial real estate and provide that it is operating as a principal in all of its revenue generating activities. The Company does not have multiple-element arrangements, variable consideration, financing components, significant noncash consideration, licenses, long-term contracts with customers or other items affecting the transaction price. The Company determined that the transaction price is generally fixed and determinable, and collectability is reasonably assured. Revenue was and will continue to be recognized in principally all cases at the close of escrow for real estate brokerage, close of loan for financing and when services are provided upon closing of the transaction for other revenues. Accordingly, the adoption of ASU 2014-09, In January 2017, the FASB issued ASU No. 2017-01, Business Combinations: Clarifying the Definition of a Business 2017-01”). 2017-01 2017-01 In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other: Simplifying the Test for Goodwill Impairment 2017-04”). 2017-04 2017-04 2017-04 In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income 2018-02”). 2018-02 2018-02 In June 2018, the FASB issued ASU No. 2018-7, Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting 2018-7”). 2018-7 Revenue from Contracts with Customers. non-employees 2018-7 non-employees non-employee Pending Adoption In February 2016, the FASB issued ASU No. 2016-02, Leases 2016-02”), 2016-02 The Company will elect available practical expedients permitted under the guidance, which among other items, allow the Company to (i) carry forward its historical lease classification, (ii) not reassess leases for the definition of lease under the new standard, (iii) utilize a discount rate as of the effective date and (iv) not record leases that expired or were terminated prior to the effective date. The Company will make an accounting policy election to account for lease and non-lease In preparation for adoption of the standard, the Company implemented internal controls and key system functionality to enable the preparation of the required financial information. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses 2016-13”). 2016-13 2016-13, available-for In March 2017, the FASB issued ASU No. 2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20): 2017-08”). 2017-08 2017-08 2017-08 In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement 2018-13”). 2018-13 2018-13 2018-13 2018-13 In August 2018, the FASB issued ASU No. 2018-15, Internal-Use 350-40)—Customer’s 2018-15”). 2018-15 2018-15 internal-use internal-use 2018-15

Acquisitions, Goodwill and Othe

Acquisitions, Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Acquisitions, Goodwill and Other Intangible Assets	3. Acquisitions, Goodwill and Other Intangible Assets During the twelve months ended December 31, 2018, the Company completed four acquisitions and the results of each of the acquisitions have been included in the consolidated financial statements beginning on their respective acquisition date. The acquisitions expand the Company’s network of its real estate sales and financing professionals and loan originators and provides further diversification to its loan origination platform and financing services. Aggregate terms of these acquisitions included: (i) cash paid at closing of approximately $14.9 million, net of cash received and (ii) the fair value of contingent consideration and deferred payments, which will be paid over the next one to seven-year period after the related acquisition dates based on achievement of certain EBITDA targets or service and time requirements. Contingent consideration and deferred payments are included in accounts payable and other liabilities and deferred rent and other liabilities in the consolidated balance sheets. The Company determined the fair value of the future payments aggregated $3.7 million, including contingent consideration of $2.7 million using a probability-weighted, discounted cash flow estimate based on achieving EBITDA targets. As of December 31, 2018, contingent consideration has a maximum undiscounted payment of $4.2 million. See Note 9 – “Fair Value Measurements” for additional information on contingent consideration. The acquisitions were accounted for as business combinations. Based on preliminary purchase price allocations, $2.0 million, net, was allocated to mortgage servicing rights, including assets of $2.1 million and liabilities $0.1 million, $4.2 million was allocated to the fair values of intangible assets, $0.8 million to other assets noncurrent and $0.1 million to acquired working capital, with the remainder of $11.5 million allocated to goodwill. The goodwill recorded as part of the acquisitions primarily arose from the acquired assembled workforce and commercial sales, lending and servicing platforms. The Company expects all of the goodwill to be tax deductible, with the tax-deductible Goodwill and intangible assets, net consisted of the following (in thousands): December 31, 2018 December 31, 2017 Gross Carrying Accumulated Net Book Value Gross Carrying Accumulated Net Book Value Goodwill and intangible assets: Goodwill(1) $ 11,459 $ — $ 11,459 $ — $ — $ — Intangible assets(1) 4,240 (314 ) 3,926 — — — $ 15,699 $ (314 ) $ 15,385 $ — $ — $ — (1) Represents additions from acquisitions. The net change in the carrying value of intangible assets consisted of the following (in thousands): December 31, 2018 2017 Beginning balance $ — $ — Additions from acquisitions 4,240 — Amortization (314 ) — Ending balance $ 3,926 $ — Estimated amortization expense for intangible assets for the next five years and thereafter consisted of the following (in thousands): December 31, 2019 $ 836 2020 817 2021 729 2022 633 2023 589 Thereafter 322 $ 3,926

Property and Equipment, Net

Property and Equipment, Net	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	4. Property and Equipment, Net Property and equipment, net consisted of the following (in thousands): December 31, 2018 2017 Computer software and hardware equipment $ 20,427 $ 16,247 Furniture, fixtures and equipment 24,227 21,695 Less: accumulated depreciation and amortization (25,104 ) (20,789 ) $ 19,550 $ 17,153 During the years ended December 31, 2018 and 2017, the Company wrote-off

Selected Balance Sheet Data

Selected Balance Sheet Data	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Selected Balance Sheet Data	5. Selected Balance Sheet Data Other Assets Other assets consisted of the following (in thousands): Current December 31, Non-Current December 31, 2018 2017 2018 2017 Mortgage servicing rights, net of amortization $ — $ — $ 2,209 $ — Due from independent contractors, net(1)(2) 3,831 3,672 27,157 21,726 Security deposits — — 1,196 1,158 Employee notes receivable(3) 156 366 370 255 Customer trust accounts and other 2,381 1,491 846 24 $ 6,368 $ 5,529 $ 31,778 $ 23,163 (1) Represents amounts advanced, notes receivable and other receivables due from the Company’s investment sales and financing professionals. The notes receivable along with interest, are typically collected from future commissions and are generally due in one to four years. (2) Includes allowance for doubtful accounts related to current receivables of $514 and $494 as of December 31, 2018 and 2017, respectively. The Company recorded a provision for bad debt expense of $291, $219 and $47 and wrote off $271, $38 and $93 of these receivables for the years ended December 31, 2018, 2017 and 2016, respectively. Any cash receipts on notes are applied first to unpaid principal balance prior to any income being recognized. (3) See Note 8 – “Related-Party Transactions” for additional information. MSRs The net change in the carrying value of MSRs consisted of the following (in thousands): Non-Current December 31, 2018 2017 Beginning balance $ — $ — Additions from acquisition 2,121 — Additions 391 — Amortization (303 ) — $ 2,209 $ — The portfolio of loans serviced by the Company aggregated $1.6 billion and $0 as of December 31, 2018 and 2017, respectively. Deferred Rent and Other Liabilities Deferred rent and other liabilities consisted of the following (in thousands): Non-Current December 31, 2018 2017 Deferred rent and other $ 5,445 $ 4,505 Contingent consideration(1) 2,054 — $ 7,499 $ 4,505 (1) The current portion of contingent consideration in the amount of $821,000 is included in accounts payable and other liabilities in the consolidated balance sheets. Deferred Compensation and Commissions Deferred compensation and commissions consisted of the following (in thousands): Current December 31, Non-Current December 31, 2018 2017 2018 2017 Stock appreciation rights (“SARs”) liability(1) $ 1,810 $ 1,662 $ 19,299 $ 20,217 Commissions payable to investment sales and financing professionals 44,812 46,257 23,983 21,924 Deferred compensation liability(1) 1,288 1,261 6,605 7,220 $ 47,910 $ 49,180 $ 49,887 $ 49,361 (1) The SARs and deferred compensation liability become subject to payout as a result of a participant no longer being considered as a service provider. As a result of the retirement of certain participants, estimated amounts to be paid to the participants within the next twelve months have been classified as current. SARs Liability Prior to the IPO, certain employees of the Company were granted SARs under a stock-based compensation program assumed by MMC. In connection with the IPO, the SARs agreements were revised, the MMC liability of $20.0 million for the SARs was frozen as of March 31, 2013, and was transferred to MMI through a capital distribution. The SARs liability will be settled with each participant in ten annual installments in January of each year upon retirement or termination from service, or in full upon consummation of a change in control of the Company. Under the revised agreements, MMI is required to accrue interest on the outstanding balance beginning on January 1, 2014 at a rate based on the 10-year Estimated payouts within the next twelve months for participants that have separated from service have been classified as current. The Company made total payments consisting of accumulated interest of $1.7 million and $1.4 million during the years ended December 31, 2018 and 2017, respectively. Commissions Payable Certain investment sales professionals have the ability to earn additional commissions after meeting certain annual revenue thresholds. These commissions are recognized as cost of services in the period in which they are earned as they relate to specific transactions closed. The Company has the ability to defer payment of certain commissions, at its election, for up to three years. Commissions payable that are not expected to be paid within twelve months are classified as long-term. Deferred Compensation Liability A select group of management is eligible to participate in the Marcus & Millichap Deferred Compensation Plan (the “Deferred Compensation Plan”). The plan is a non-qualified in-service The net change in the carrying value of the assets held in the rabbi trust and the net change in the carrying value of the deferred compensation liability, each exclusive of additional contributions, distributions and trust expenses consisted of the following (in thousands): December 31, 2018 2017 2016 (Decrease) increase in the carrying value of the assets held in the rabbi trust(1) $ (326 ) $ 849 $ 470 (Decrease) increase in the net carrying value of the deferred compensation obligation(2) $ (306 ) $ 904 $ 452 (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, 2018
Investments, Debt and Equity Securities [Abstract]
Investments in Marketable Securities	6. Investments in Marketable Securities Amortized cost and fair value of marketable securities, available-for-sale, December 31, 2018 December 31, 2017 Amortized Gross Gross Fair Value Amortized Gross Gross Fair Value Short-term investments: U.S. treasuries $ 121,252 $ 7 $ (79 ) $ 121,180 $ 57,712 $ — $ (88 ) $ 57,624 U.S. government sponsored entities 3,512 — (7 ) 3,505 7,016 — (8 ) 7,008 Corporate debt securities 11,962 — (11 ) 11,951 8,931 — (3 ) 8,928 Asset-backed securities and other 806 — (6 ) 800 — — — — $ 137,532 $ 7 $ (103 ) $ 137,436 $ 73,659 $ — $ (99 ) $ 73,560 Long-term investments: U.S. treasuries $ 44,997 $ 128 $ (115 ) $ 45,010 $ 18,111 $ 7 $ (164 ) $ 17,954 U.S. government sponsored entities 1,569 — (62 ) 1,507 5,306 — (62 ) 5,244 Corporate debt securities 32,467 3 (633 ) 31,837 22,505 268 (54 ) 22,719 Asset-backed securities and other 4,889 12 (46 ) 4,855 6,180 17 (15 ) 6,182 $ 83,922 $ 143 $ (856 ) $ 83,209 $ 52,102 $ 292 $ (295 ) $ 52,099 The amortized cost and fair value of the Company’s investments in available-for-sale December 31, 2018 December 31, 2017 Unrealized Fair Value Unrealized Fair Less than 12 months $ (576 ) $ 127,326 $ (158 ) $ 63,229 12 months or longer $ (383 ) $ 30,609 $ (236 ) $ 44,961 Gross realized gains and gross realized losses from the sales of the Company’s available-for-sale December 31, 2018 2017 Gross realized gains(1) $ 12 $ 2 Gross realized losses(1) $ (2 ) $ — (1) Recorded in other income (expense), net in the consolidated statements of net and comprehensive income. The cost basis of securities sold were determined based on the specific identification method. As of December 31, 2018, the Company considers the declines in market value of its marketable securities, available-for-sale available-for-sale Amortized cost and fair value of marketable securities, available-for-sale, December 31, 2018 December 31, 2017 Amortized Fair Value Amortized Fair Value Due in one year or less $ 137,532 $ 137,436 $ 73,659 $ 73,560 Due after one year through five years 61,875 61,846 30,644 30,517 Due after five years through ten years 17,310 16,747 15,090 15,200 Due after ten years 4,737 4,616 6,368 6,382 $ 221,454 $ 220,645 $ 125,761 $ 125,659 Weighted average contractual maturity 1.8 years 2.6 years Actual maturities may differ from contractual maturities because certain borrowers have the right to prepay certain obligations with or without prepayment penalties.

Notes Payable to Former Stockho

Notes Payable to Former Stockholders	12 Months Ended
	Dec. 31, 2018
Payables and Accruals [Abstract]
Notes Payable to Former Stockholders	7. Notes Payable to Former Stockholders In conjunction with the Spin-Off Accrued interest included in accounts payable and other liabilities in the accompanying consolidated balance sheets pertaining to the Notes consisted of the following (in thousands): December 31, 2018 2017 Accrued interest $ 271 $ 305 Interest expense pertaining to the Notes consisted of the following (in thousands): Years Ended 2018 2017 2016 Interest expense $ 404 $ 454 $ 502 Future minimum principal payments on the Notes consisted of the following (in thousands): December 31, 2019 $ 1,087 2020 6,564 $ 7,651

Related-Party Transactions

Related-Party Transactions	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Related-Party Transactions	8. Related-Party Transactions Shared and Transition Services Prior to October 2013, the Company operated under a shared services arrangement with MMC whereby the Company was charged for actual costs specifically incurred on behalf of the Company or allocated to the Company on a pro rata basis. Beginning in October 2013, certain services are provided to the Company under a Transition Services Agreement (“TSA”) between MMC and the Company, which replaced the pre-IPO Brokerage and Financing Services with the Subsidiaries of MMC MMC has wholly or majority owned subsidiaries that buy and sell commercial real estate properties. The Company performs certain brokerage and financing services related to transactions of the subsidiaries of MMC. For the years ended December 31, 2018, 2017 and 2016, the Company earned real estate brokerage commissions and financing fees of $7.7 million, $2.1 million and $5.1 million, respectively, from transactions with subsidiaries of MMC related to these services. The Company incurred cost of services of $4.6 million, $1.2 million and $3.0 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 for each of the years ended December 31, 2018, 2017 and 2016, respectively. Rent expense is included in selling, general and administrative expense in the accompanying consolidated statements of net and comprehensive income. Accounts Payable and Other Liabilities with MMC As of December 31, 2018 and 2017, accounts payable and other liabilities with MMC totaling $101,000 and $91,000, respectively, remain unpaid and are included in accounts payable and other liabilities in the accompanying consolidated balance sheets. Other The Company makes advances to non-executive time-to-time. non-current) As of December 31, 2018, George M. Marcus, the Company’s founder and Co-Chairman,

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	9. Fair Value Measurements Recurring Fair Value Measurements Assets and liabilities carried at fair value on a recurring basis consisted of the following (in thousands): December 31, 2018 December 31, 2017 Fair Value Level 1 Level 2 Level 3 Fair Value Level 1 Level 2 Level 3 Assets: Assets held in rabbi trust $ 8,268 $ — $ 8,268 $ — $ 8,787 $ — $ 8,787 $ — Cash equivalents(1): Commercial paper and other $ 1,599 $ 1,599 $ — $ — $ 11,441 $ — $ 11,441 $ — Money market funds 163,126 163,126 — — 157,788 157,788 — — $ 164,725 $ 164,725 $ — $ — $ 169,229 $ 157,788 $ 11,441 $ — Marketable securities, available-for-sale: Short-term investments: U.S. treasuries $ 121,180 $ 121,180 $ — $ — $ 57,624 $ 57,624 $ — $ — U.S. government sponsored entities 3,505 — 3,505 — 7,008 — 7,008 — Corporate debt securities 11,951 — 11,951 — 8,928 — 8,928 — Asset-backed securities and other 800 — 800 — — — — — $ 137,436 $ 121,180 $ 16,256 $ — $ 73,560 $ 57,624 $ 15,936 $ — Long-term investments: U.S. treasuries $ 45,010 $ 45,010 $ — $ — $ 17,954 $ 17,954 $ — $ — U.S. government sponsored entities 1,507 — 1,507 — 5,244 — 5,244 — Corporate debt securities 31,837 — 31,837 — 22,719 — 22,719 — Asset-backed securities and other 4,855 — 4,855 — 6,182 — 6,182 — $ 83,209 $ 45,010 $ 38,199 $ — $ 52,099 $ 17,954 $ 34,145 $ — Liabilities: Contingent consideration(2) $ 2,875 $ — $ — $ 2,875 $ — $ — $ — $ — Deferred compensation liability $ 7,893 $ 7,893 $ — $ — $ 8,481 $ 8,481 $ — $ — (1) Included in cash and cash equivalents on the accompanying consolidated balance sheets. (2) Assuming the achievement of the applicable performance criteria, the Company anticipates these earn-out December 31, 2018 2017 Beginning balance $ — $ — Contingent consideration in connection with acquisitions 2,674 — Change in fair value of contingent consideration 201 — Payments of contingent consideration — — Ending balance $ 2,875 $ — There were no transfers in or out of Level 1, Level 2 and Level 3 during the year ended December 31, 2018. Nonrecurring Fair Value Measurements MSRs are carried at the lower of amortized cost or fair value. The fair value of the MSRs approximated carrying value at December 31, 2018.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2018
Federal Home Loan Banks [Abstract]
Stockholders' Equity	10. Stockholders’ Equity Common Stock As of December 31, 2018 and 2017, there were 38,814,464 and 38,374,011 shares of common stock, $0.0001 par value, issued and outstanding, which includes unvested restricted stock awards issued to non-employee Preferred Stock The Company has 25,000,000 authorized shares of preferred stock with a par value $0.0001 per share. At December 31, 2018 and 2017, there were no preferred shares issued or outstanding. Accumulated Other Comprehensive (Loss) Income Amounts reclassified from accumulated other comprehensive (loss) income are included as a component of other income (expense), net in the consolidated statements of net and comprehensive income. The reclassifications were determined on a specific identification basis. The Company has not provided for U.S. taxes on unremitted earnings of its foreign subsidiary as it is operating at a loss and has no earnings and profits to remit. As a result, deferred taxes were not provided related to the cumulative foreign currency translation adjustments.

Stock-Based Compensation Plans

Stock-Based Compensation Plans	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation Plans	11. Stock-Based Compensation Plans 2013 Omnibus Equity Incentive Plan The board of directors adopted the 2013 Plan, which became effective upon the Company’s IPO. In February 2017, the board of directors amended the 2013 Plan, which was approved by the Company’s stockholders in May 2017. Grants are made from time to time by the compensation committee of the Company’s board of directors at its discretion subject to certain restrictions as to the number and value of shares that may be granted to any individual. Upon adoption of the 2013 Plan, 5,500,000 shares of common stock were initially reserved for the issuance of awards. Pursuant to the automatic increases previously provided for in the 2013 Plan, the board of directors approved share reserve increases aggregating 3,300,000. Pursuant to the amendment and restatement of the 2013 Plan referenced above, the automatic share increase provision was removed. At December 31, 2018, there were 5,491,161 shares available for future grants under the 2013 Plan. Awards Granted and Settled Under the 2013 Plan, the Company has issued restricted stock awards (“RSAs”) to non-employee one-year During the year ended December 31, 2018, 317,236 shares of RSUs were vested and the same number of shares of common stock were delivered. Additionally, 55,666 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, 2018, 237,052 fully vested DSUs were settled by issuing common stock and 92,022 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 years ended December 31, 2018 and 2017, the Company recorded windfall tax benefits, net of $1.9 million and $2.9 million, respectively, 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 Non-employee RSU Grants to RSU Grants to Total Weighted- Nonvested shares at December 31, 2016(1) 29,112 566,480 454,838 1,050,430 $ 22.38 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 Granted February 2018 — 106,419 20,293 126,712 March 2018 — 15,000 — 15,000 May 2018 12,852 4,854 14,280 31,986 August 2018 — 10,407 63,651 74,058 November 2018 — 6,080 4,242 10,322 Total Granted 12,852 142,760 102,466 258,078 34.94 Vested (16,488 ) (146,122 ) (171,114 ) (333,724 ) 22.31 Transferred — (23,755 ) 23,755 — 30.69 Forfeited/canceled — (1,960 ) (12,674 ) (14,634 ) 30.17 Nonvested shares at December 31, 2018(1) 27,096 471,782 392,697 891,575 $ 27.59 Unrecognized stock-based compensation expense as of December 31, 2018(2) $ 352 $ 9,542 $ 9,032 $ 18,926 Weighted average remaining vesting period (years) as of December 31, 2018 0.79 3.18 3.39 3.23 (1) Nonvested RSUs will be settled through the issuance of new shares of common stock. (2) The total unrecognized compensation expense is expected to be recognized over a weighted-average period of approximately 3.23 years. The aggregate fair value of RSUs and RSAs that vested were $11.1 million, $7.8 million and $7.0 million for the years ended December 31, 2018, 2017 and 2016, respectively. The fair value of fully vested DSUs that settled was $8.3 million, $10.2 million and $10.4 million for the years ended December 31, 2018, 2017 and 2016, respectively. See “SARs and DSUs” section below and Note 14 – “Earnings per Share” for additional information. As of December 31, 2018, 2017 and 2016, remaining outstanding fully vested DSUs were 341,566, 578,618 and 930,419, respectively. Future share settlements of DSUs by year consisted of the following: December 31, 2018 2021 60,373 2022 281,193 341,566 Employee Stock Purchase Plan In 2013, the Company adopted the ESPP. The ESPP qualifies under Section 423 of the Internal Revenue Code and provides for consecutive, non-overlapping 6-month 6-month The ESPP initially had 366,667 shares of common stock reserved and 225,894 and 246,895 shares of common stock remain available for issuance for each of the periods at December 31, 2018 and 2017, respectively. The ESPP 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 compensation committee of the board of directors. Pursuant to the provisions of the ESPP, the board of directors has determined to not provide for any annual increases to date. At December 31, 2018, total unrecognized compensation cost related to the ESPP was $44,000 and is expected to be recognized over a weighted average period of 0.37 years. Restricted Stock In connection with the IPO, the Company entered into sales restriction agreements with certain of its executive officers. Of the original 3,689,326 shares subject to resale restriction, all shares were fully released as of December 31, 2018 due to the expiration of the five-year period set forth in the sales restriction agreements. SARs and DSUs Prior to the IPO, certain employees were granted SARs. As of March 31, 2013, the outstanding SARs were frozen at the liability amount, and will be paid out to each participant in installments upon retirement or departure under the terms of the revised SARs agreements. To replace beneficial ownership in the SARs, the difference between the book value liability and the fair value of the awards was granted to plan participants in the form of DSUs, which were fully vested upon receipt and will be settled in actual stock at a rate of 20% per year if the participant remains employed by the Company during that period (otherwise all unsettled shares of stock upon termination from service will be settled five years from the termination date, unless otherwise agreed to by the Company). In the event of death or termination of service after reaching the age of 67, 100% of the DSUs will be settled. Summary of Stock-Based Compensation The Company adopted ASU 2018-7 non-employee Years Ended December 31, 2018 2017 2016 Employee stock purchase plan $ 109 $ 128 $ 169 RSAs – non-employee 632 397 422 RSUs – employees 4,233 3,750 3,130 RSUs – independent contractors(1) 7,009 4,870 3,314 $ 11,983 $ 9,145 $ 7,035 (1) The Company grants RSUs to independent contractors (i.e. investment sales and financing professionals), who are considered non-employees. 2018-7,

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	12. Income Taxes The components of income from continuing operations before provision for income taxes consisted of the following (in thousands): Years Ended December 31, 2018 2017 2016 Income (loss) before provision for income taxes: United States $ 119,446 $ 100,031 $ 108,797 Foreign (2,226 ) (805 ) (1,695 ) $ 117,220 $ 99,226 $ 107,102 The provision for income taxes consisted of the following (in thousands): Years Ended December 31, 2018 2017 2016 The provision (benefit) for income taxes consisted of the following: Federal: Current $ 24,101 $ 28,993 $ 36,228 Deferred (268 ) 13,249 (337 ) $ 23,833 $ 42,242 $ 35,891 State: Current $ 6,004 $ 5,883 $ 6,700 Deferred 162 (423 ) (146 ) $ 6,166 $ 5,460 $ 6,554 Foreign: Current $ — $ — $ — Deferred (36 ) — — $ (36 ) $ — $ — $ 29,963 $ 47,702 $ 42,445 On December 22, 2017, the Tax Cuts and Jobs Act (“the Act”) was enacted, which significantly changed the U.S. corporate income tax laws by, among other items, reducing the U.S. corporate income tax rate to 21% from 35% starting in 2018, 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, 2018 2017 Deferred Tax Assets: Accrued expenses and bonuses $ 2,258 $ 1,307 Bad debt and other reserves 1,840 1,416 Deferred compensation 13,337 12,693 Stock-based compensation 8,912 9,144 Deferred rent 1,470 1,283 Net operating and capital loss carryforwards 2,335 1,809 Other comprehensive income 330 6 State taxes 11 622 Other 25 — Deferred tax assets before valuation allowance 30,518 28,280 Valuation allowance (2,570 ) (1,893 ) Deferred Tax Assets $ 27,948 $ 26,387 Deferred Tax Liabilities: Fixed assets $ (4,086 ) $ (2,861 ) Prepaid expenses (789 ) (886 ) Other (114 ) — Deferred Tax Liabilities (4,989 ) (3,747 ) Deferred Tax Assets, Net $ 22,959 $ 22,640 As of December 31, 2018, and 2017, the Company had state and Canadian net operating losses of approximately $9.4 million and $7.8 million, respectively, principally all of which will begin to expire in 2033. 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 a 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. The Company determined that as of December 31, 2018 and 2017, $2.6 million and $1.9 million, respectively, of the deferred tax assets related to state and Canadian losses do not satisfy the recognition criteria. The Company has therefore recorded a valuation allowance for this amount. The valuation allowance for deferred tax assets was increased by $677,000, $170,000 and $412,000 during 2018, 2017 and 2016, 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 to income before provision for income taxes and consisted of the following (in thousands): Years Ended December 31, 2018 2017 2016 Amount Rate Amount Rate Amount Rate Income tax expense at the federal statutory rate $ 24,616 21.0 % $ 34,729 35.0 % $ 37,485 35.0 % State income tax expense, net of federal benefit 4,550 3.9 % 3,577 3.6 % 4,346 4.1 % Effect of state and foreign rate change on deferred taxes 69 0.1 % (30 ) — (79 ) (0.1 )% Windfall tax benefits, net related to stock-based compensation (1,535 ) (1.3 )% (2,568 ) (2.6 )% — — Change in valuation allowance 677 0.6 % 170 0.2 % 412 0.4 % Effect of rate and other changes on federal deferred taxes, net due to enactment of the Act — — 11,644 11.7 % — — Permanent and other items(1) 1,586 1.3 % 180 0.2 % 281 0.2 % $ 29,963 25.6 % $ 47,702 48.1 % $ 42,445 39.6 % (1) Permanent items relate principally to compensation charges and meals and entertainment. A reconciliation of the beginning and ending amounts of unrecognized tax benefits consisted of the following (in thousands): Years Ended December 31, 2018 2017 2016 Beginning balance $ — $ — $ — Gross increase/(decrease) as a result of positions taken: Prior periods 1,246 — — Current period — — — Settlement with tax authorities — — — Expiration of applicable statutes of limitation — — — Ending balance $ 1,246 $ — $ — It is reasonably possible that the unrecognized tax benefits balance may decrease by as much as $434,000 during the next 12 months due to the expiration of the statute of limitations. During the year ended December 31, 2018, penalties of $167,000 were recorded relating to unrecognized tax benefits. The Company is subject to tax in various jurisdictions and, as a matter of ordinary course, the Company may be subject to income tax examinations by the federal, state and foreign taxing authorities for the tax years 2014 to 2018. The Company is not currently under income tax examination by any taxing authority. The Company has not provided for U.S. taxes on unremitted earnings of its foreign subsidiary as this subsidiary 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, 2018
Retirement Benefits [Abstract]
Retirement Plans	13. 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 limitations and ERISA. The Company makes matching contributions of 50% on the first 8% of employee contributions per pay period up to a maximum of $4,000. Employees become vested in these Company contributions 33% upon one year of service, 66% upon two years of service and 100% upon three years of service. Company matching contributions aggregated $920,000, $733,000 and $628,000 for the years ended December 31, 2018, 2017 and 2016, 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, 2018
Earnings Per Share [Abstract]
Earnings per Share	14. Earnings per Share Basic and diluted earnings per share for the years ended December 31, 2018, 2017 and 2016 consisted of the following (in thousands, except per share data): Years Ended December 31, 2018 2017 2016 Numerator (Basic and Diluted): Net income $ 87,257 $ 51,524 $ 64,657 Denominator: Basic Weighted Average Common Shares Issued and Outstanding 38,637 38,142 37,637 Deduct: Unvested RSAs(1) (30 ) (29 ) (36 ) Add: Fully vested DSUs(2) 542 875 1,298 Weighted Average Common Shares Outstanding 39,149 38,988 38,899 Basic earnings per common share $ 2.23 $ 1.32 $ 1.66 Diluted Weighted Average Common Shares Outstanding from above 39,149 38,988 38,899 Add: Dilutive effect of RSUs, RSAs & ESPP 234 112 136 Weighted Average Common Shares Outstanding 39,383 39,100 39,035 Diluted earnings per common share $ 2.22 $ 1.32 $ 1.66 Antidilutive shares excluded from diluted earnings per common share(3) 137 512 516 (1) RSAs were issued and outstanding to the non-employee one-year (2) Shares are included in weighted average common shares outstanding as the shares are fully vested but have not yet been delivered. See Note 10 – “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, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	15. Commitments and Contingencies Operating Leases Future minimum lease payments under non-cancelable December 31, 2018 2019 $ 19,649 2020 19,287 2021 16,833 2022 12,368 2023 8,805 Thereafter 10,452 $ 87,394 Deferred rent totaled $5.6 million and $4.8 million as of December 31, 2018 and 2017, respectively. The noncurrent portion is included in defered rent and other liabilities and the current portion is included in accounts payable and other liabilities in the accompanying consolidated balance sheets. Rental expense was $27.7 million, $25.6 million and $23.4 million for the years ended December 31, 2018, 2017 and 2016, 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, 2018, 2017 and 2016, 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, 2018. Borrowings under the Credit Facility will bear interest, at the Company’s option, at either the (i) Base Rate (defined as the highest of (a) the Bank’s prime rate, (b) the federal funds rate plus 1.5% and (c) one-month The Credit Facility contains customary covenants, including financial and other covenant reporting requirements and events of default. Financial covenants require the Company, on a combined basis with its guarantors, to maintain (i) an EBITDAR Coverage Ratio (as defined in the Credit Agreement) of not less than 1.25:1.0 as of each quarter end and (ii) total funded debt to EBITDA not greater than 2.0:1.0 as of each quarter end both on a rolling 4-quarter non-financial Other In connection with certain agreements with investment sales and financing professionals, the Company may agree to advance amounts to certain investment sales and financing professionals upon reaching certain performance goals. Such commitments as of December 31, 2018 aggregated $1.0 million.

Selected Quarterly Financial Da

Selected Quarterly Financial Data	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data	16. 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 2018 2018 2018 2018 2017 2017 2017 2017 Consolidated Financial (in thousands, except per share data) Total revenues $ 230,283 $ 210,590 $ 199,402 $ 174,541 $ 202,776 $ 183,341 $ 180,371 $ 153,212 Cost of services 148,469 132,896 119,869 101,649 131,730 114,803 110,377 89,647 Operating income 32,489 27,384 28,950 23,464 27,403 24,683 24,998 19,048 Net income 26,225 20,854 22,167 18,011 8,480 15,475 15,569 12,000 Earnings per share: Basic $ 0.67 $ 0.53 $ 0.57 $ 0.46 $ 0.22 $ 0.40 $ 0.40 $ 0.31 Diluted $ 0.66 $ 0.53 $ 0.56 $ 0.46 $ 0.22 $ 0.39 $ 0.40 $ 0.31

Description of Business and B_2

Description of Business and Basis of Presentation (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Description of Business	Description of Business Marcus & Millichap, Inc., (the “Company”, “Marcus & Millichap”, or “MMI”), a Delaware corporation, is a brokerage firm specializing in commercial real estate investment sales, financing, research and advisory services. As of December 31, 2018, MMI operates 80 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.
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.
Reclassifications	Reclassifications Certain prior-period amounts in Note 12 – “Income Taxes” have been reclassified to conform to the current period presentation. These changes had no impact on the previously reported consolidated results of operations or any totals or subtotals therein.
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, 2018 and 2017, portions of the balance of cash and cash equivalents were held in five 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 cash and cash equivalents, including 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. The Company generates financing fees from securing financing on purchase transactions, and we also earn fees from refinancing its clients’ existing mortgage debt and other financing activities, including mortgage servicing. Other revenues include fees generated from consulting and advisory services, as well as referral fees from other real estate brokers. The Company’s contracts contain one performance obligation related to its real estate brokerage, financing and consulting and advisory services offered to buyers and sellers of commercial real estate, and provide that it is operating as a principal in all its revenue generating activities. The Company does not have multiple-element arrangements, variable consideration, financing components, significant noncash consideration, licenses, long-term contracts with customers or other items affecting the transaction price. Accordingly, the Company determined that the transaction price is fixed and determinable and collectability is reasonably assured. The Company recognizes revenue in principally all cases at the close of escrow for real estate brokerage, at the close of loan for financing, when services are provided, or upon closing of the transaction for other revenues.
Mortgage Servicing Rights and Fees	Mortgage Servicing Rights and Fees Mortgage servicing rights (“MSRs”) are recorded at fair value upon acquisition of a servicing contract based on internal models using contractual information and the assumptions of a market participant. The Company has elected the amortization method for the subsequent measurement of MSRs. MSRs are carried at the lower of amortized cost or fair value. All MSRs are amortized using the interest method over the period that servicing income is expected to be received. MSRs are included in other assets non-current In connection with MSRs activities, the Company holds funds in escrow for the benefit of the lenders. These funds, which totaled $2.1 million and $0 as of December 31, 2018 and 2017, respectively and the offsetting obligations, are not presented in the Company’s financial statements as they do not represent assets and liabilities of the Company. Revenue from the fees on such accounts is included in financing revenue in the consolidated statements of net and comprehensive income. We recognize mortgage servicing revenues upon the acquisition of a servicing contract. The Company records servicing fees when earned provided the loans are current and the debt service payments are made by the borrowers. MSRs and related servicing fees are recorded in financing fees in the accompanying consolidated statements of net and comprehensive income.
Capitalization of Internal Labor	Capitalization of Internal Labor Certain costs related to the development or purchase of internal-use
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, 2018 and 2017.
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. Commissions are 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 that 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 financial condition of the issuer and any changes thereto, changes in market interest rates and 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. The Company typically invests in highly-rated securities, and its investment policy generally limits the amount of credit exposure to any one issuer. The policy generally requires investments to be investment grade, with the primary objective of minimizing the potential risk of principal loss and matching long-term liabilities.
Assets Held in Rabbi Trust	Assets Held in Rabbi Trust The Company maintains a non-qualified
Fair Value Measurements	Fair Value Measurements U.S. GAAP defines the fair value of a financial instrument as the amount that would be received from the sale of an asset in an orderly transaction between market participants at the measurement date. The Company is responsible for the determination of fair value and the supporting methodologies and assumptions. The Company uses various pricing sources and third parties to provide and validate the values utilized. The degree of judgment used in measuring the fair value of financial instruments is generally inversely correlated with the level of observable valuation inputs. Financial instruments with quoted prices in active markets generally have more pricing observability and less judgment is used in measuring fair value. Financial instruments for which no quoted prices are available have less observability, and are measured at fair value using valuation models or other pricing techniques that require more judgment. Assets recorded at fair value are measured and classified in accordance with a fair value hierarchy consisting of the three “levels” based on the observability of inputs available in the marketplace used to measure the fair values as discussed below: • Level 1: • Level 2: • Level 3: Recurring Fair Value Measurements The Company values its investments including commercial paper and floating NAV money market funds recorded in cash and cash equivalents, investments in marketable securities, available-for-sale, available-for-sale Fair values for assets held in the Rabbi Trust and related deferred compensation liability were determined based on the underlying investments in the trust and are measured as Level 2 and Level 1, respectively. Contingent consideration in connection with acquisitions is carried at fair value, and determined on a contract-by-contract The Company values MSRs at fair value upon acquisition of a servicing contract. MSRs do not trade in an active, open market with readily observable prices, and are measured as Level 3. The estimated fair value of the Company’s MSRs are developed using discounted cash flow models that calculate the present value of estimated future net servicing income. The life of the underlying loan is estimated giving consideration to the contractually specified servicing fees, prepayment assumptions, delinquency rates, late charges, other ancillary revenue, costs to service and other economic factors. The Company’s model assumes full prepayment of the loan at or near the point where the prepayment provisions have expired. The MSRs have principally similar risk characteristics. The assumptions used to estimate the fair value of MSRs are based on internal models and are periodically compared to assumptions used by other market participants. Due to the relatively few transactions in the MSR market, the Company experienced little volatility in the assumptions used during the periods presented. Additionally, the Company does not expect to see much volatility in the assumptions for the foreseeable future. Management actively monitors the assumptions used and makes adjustments to those assumptions when market conditions change, or other factors indicate such adjustments are warranted. The Company periodically reassesses and adjusts, when necessary, the underlying inputs and assumptions used in the model to reflect observable market conditions and assumptions that a market participant would consider in valuing an MSR asset. The Company carries MSRs at the lower of amortized cost or fair value and evaluates the carrying value for impairment quarterly. The Company engages a third party to assist in determining the estimated fair value of its existing MSRs quarterly. Nonrecurring Fair Value Measurements The Company reviews the carrying value of MSRs, intangibles, goodwill and other assets for indications of impairment quarterly. When indications of potential impairment are identified, the Company may be required to determine the fair value of those assets and record an adjustment for the carrying amount in excess of the fair value determined. Any fair value determination would be based on valuation approaches appropriate in the circumstances and utilize Level 2 and Level 3 measurements as required. 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 the other assets, net current and other assets non-current non-current The Company’s obligations under notes payable to former stockholders bear interest at fixed 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 the 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, MSRs, security deposits made in connection with operating leases, customer trust accounts, employee notes receivable and other assets and 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, which will generally be ratably over a contracted service period, or in reaching contractual performance criteria. 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 other liabilities, 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 potential 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 the accounts payable and other liabilities and deferred rent and other liabilities captions). The Company typically leases general purpose built-out
Litigation	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 proceedings cannot be determined, the Company uses judgment in the evaluation of claims and the need for accrual for loss contingencies quarterly. The Company records an accrual for litigation related losses where the likelihood of loss is both probable and estimable. The Company accrues legal fees for litigation as the legal services are provided.
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, 2018, 2017 and 2016 were $1.1 million, $824,000 and $1.2 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 (i) differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis, and (ii) 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 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 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 Company evaluates its tax positions quarterly. 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 After adoption of Accounting Standards Update (“ASU”) No. 2016-09, Improvements to Employee Share-Based Payment Accounting 2016-09”) 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. The Company adopted ASU No. 2018-7, Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting 2018-7”) 2018-7, 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 shares issued under the ESPP, 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 (e.g. 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 period. 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 money market funds that represent amounts in 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, 2018, 2017 and 2016, the Company’s Canadian operations represented less than 1% of total revenues. During the twelve months ended December 31, 2018, 2017 and 2016, no office represented 10% or more of total revenues.
Business Combinations	Business Combinations The Company accounts for business combinations using the acquisition method of accounting, under which the consideration for the acquisition, including the fair value of any contingent consideration, is allocated to the assets acquired and liabilities assumed. The Company recognizes identifiable assets acquired and liabilities assumed (both specific and contingent) at their acquisition date fair values as determined by management as of the acquisition date. Acquisition-related costs, such as due diligence, legal and accounting fees, are expensed as incurred and not considered in determining the fair value of the acquired assets. The excess of the consideration over the assets acquired net of liabilities assumed is recognized as goodwill. Adjustments to contingent consideration in periods subsequent to the completion of acquisitions and acquisition-related costs are reflected in selling, general and administrative expense in the consolidated statements of net and comprehensive income.
Goodwill	Goodwill The Company evaluates goodwill for impairment annually in the fourth quarter. In addition to the annual impairment evaluation, the Company evaluates at least quarterly whether events or circumstances have occurred in the period subsequent to the annual impairment testing which indicate that it is more likely than not an impairment loss has occurred. The Company currently has only one reporting unit, therefore, all goodwill is allocated to that one reporting unit.
Intangible Assets	Intangible Assets The Company’s intangible assets primarily include non-compete
Segment Reporting	Segment Reporting The Company follows U.S. GAAP 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 (including MSRs revenue) and consulting and advisory services. Management makes operating decisions, assesses performance and allocates resources based on an ongoing review of these integrated operations, which constitute the Company’s only operating segment for financial reporting purposes.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Adopted In May 2014, the Financial Accounting Standards Board (“FASB”) issued 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 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 impact of the standard and determined that its contracts contain one performance obligation related to its real estate brokerage, financing and consulting and advisory services offered to buyers and sellers of commercial real estate and provide that it is operating as a principal in all of its revenue generating activities. The Company does not have multiple-element arrangements, variable consideration, financing components, significant noncash consideration, licenses, long-term contracts with customers or other items affecting the transaction price. The Company determined that the transaction price is generally fixed and determinable, and collectability is reasonably assured. Revenue was and will continue to be recognized in principally all cases at the close of escrow for real estate brokerage, close of loan for financing and when services are provided upon closing of the transaction for other revenues. Accordingly, the adoption of ASU 2014-09, In January 2017, the FASB issued ASU No. 2017-01, Business Combinations: Clarifying the Definition of a Business 2017-01”). 2017-01 2017-01 In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other: Simplifying the Test for Goodwill Impairment 2017-04”). 2017-04 2017-04 2017-04 In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income 2018-02”). 2018-02 2018-02 In June 2018, the FASB issued ASU No. 2018-7, Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting 2018-7”). 2018-7 Revenue from Contracts with Customers. non-employees 2018-7 non-employees non-employee Pending Adoption In February 2016, the FASB issued ASU No. 2016-02, Leases 2016-02”), 2016-02 The Company will elect available practical expedients permitted under the guidance, which among other items, allow the Company to (i) carry forward its historical lease classification, (ii) not reassess leases for the definition of lease under the new standard, (iii) utilize a discount rate as of the effective date and (iv) not record leases that expired or were terminated prior to the effective date. The Company will make an accounting policy election to account for lease and non-lease In preparation for adoption of the standard, the Company implemented internal controls and key system functionality to enable the preparation of the required financial information. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses 2016-13”). 2016-13 2016-13, available-for In March 2017, the FASB issued ASU No. 2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20): 2017-08”). 2017-08 2017-08 2017-08 In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement 2018-13”). 2018-13 2018-13 2018-13 2018-13 In August 2018, the FASB issued ASU No. 2018-15, Internal-Use 350-40)—Customer’s 2018-15”). 2018-15 2018-15 internal-use internal-use 2018-15

Acquisitions, Goodwill and Ot_2

Acquisitions, Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Summary of Goodwill and Intangible Assets	Goodwill and intangible assets, net consisted of the following (in thousands): December 31, 2018 December 31, 2017 Gross Carrying Accumulated Net Book Value Gross Carrying Accumulated Net Book Value Goodwill and intangible assets: Goodwill(1) $ 11,459 $ — $ 11,459 $ — $ — $ — Intangible assets(1) 4,240 (314 ) 3,926 — — — $ 15,699 $ (314 ) $ 15,385 $ — $ — $ — (1) Represents additions from acquisitions.
Summary of Net Change in Carrying Value of Intangible Assets	The net change in the carrying value of intangible assets consisted of the following (in thousands): December 31, 2018 2017 Beginning balance $ — $ — Additions from acquisitions 4,240 — Amortization (314 ) — Ending balance $ 3,926 $ —
Schedule of Estimated Amortization Expense for Intangible Assets	Estimated amortization expense for intangible assets for the next five years and thereafter consisted of the following (in thousands): December 31, 2019 $ 836 2020 817 2021 729 2022 633 2023 589 Thereafter 322 $ 3,926

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment, Net	Property and equipment, net consisted of the following (in thousands): December 31, 2018 2017 Computer software and hardware equipment $ 20,427 $ 16,247 Furniture, fixtures and equipment 24,227 21,695 Less: accumulated depreciation and amortization (25,104 ) (20,789 ) $ 19,550 $ 17,153

Selected Balance Sheet Data (Ta

Selected Balance Sheet Data (Tables)	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Other Assets	Other assets consisted of the following (in thousands): Current December 31, Non-Current December 31, 2018 2017 2018 2017 Mortgage servicing rights, net of amortization $ — $ — $ 2,209 $ — Due from independent contractors, net(1)(2) 3,831 3,672 27,157 21,726 Security deposits — — 1,196 1,158 Employee notes receivable(3) 156 366 370 255 Customer trust accounts and other 2,381 1,491 846 24 $ 6,368 $ 5,529 $ 31,778 $ 23,163 (1) Represents amounts advanced, notes receivable and other receivables due from the Company’s investment sales and financing professionals. The notes receivable along with interest, are typically collected from future commissions and are generally due in one to four years. (2) Includes allowance for doubtful accounts related to current receivables of $514 and $494 as of December 31, 2018 and 2017, respectively. The Company recorded a provision for bad debt expense of $291, $219 and $47 and wrote off $271, $38 and $93 of these receivables for the years ended December 31, 2018, 2017 and 2016, respectively. Any cash receipts on notes are applied first to unpaid principal balance prior to any income being recognized. (3) See Note 8 – “Related-Party Transactions” for additional information.
Summary of Net Change in Carrying Value of MSRs	The net change in the carrying value of MSRs consisted of the following (in thousands): Non-Current December 31, 2018 2017 Beginning balance $ — $ — Additions from acquisition 2,121 — Additions 391 — Amortization (303 ) — $ 2,209 $ —
Summary of Deferred Rent and Other Liabilities	Deferred rent and other liabilities consisted of the following (in thousands): Non-Current December 31, 2018 2017 Deferred rent and other $ 5,445 $ 4,505 Contingent consideration(1) 2,054 — $ 7,499 $ 4,505 (1) The current portion of contingent consideration in the amount of $821,000 is included in accounts payable and other liabilities in the consolidated balance sheets.
Components of Deferred Compensation and Commissions	Deferred compensation and commissions consisted of the following (in thousands): Current December 31, Non-Current December 31, 2018 2017 2018 2017 Stock appreciation rights (“SARs”) liability(1) $ 1,810 $ 1,662 $ 19,299 $ 20,217 Commissions payable to investment sales and financing professionals 44,812 46,257 23,983 21,924 Deferred compensation liability(1) 1,288 1,261 6,605 7,220 $ 47,910 $ 49,180 $ 49,887 $ 49,361 (1) The SARs and deferred compensation liability become subject to payout as a result of a participant no longer being considered as a service provider. As a result of the retirement of certain participants, estimated amounts to be paid to the participants within the next twelve months have 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, 2018 2017 2016 (Decrease) increase in the carrying value of the assets held in the rabbi trust(1) $ (326 ) $ 849 $ 470 (Decrease) increase in the net carrying value of the deferred compensation obligation(2) $ (306 ) $ 904 $ 452 (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 Sec_2

Investments in Marketable Securities (Tables)	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Schedule of Amortized Cost and Fair Value of Marketable Securities, Available-for-Sale, by Type of Security	Amortized cost and fair value of marketable securities, available-for-sale, December 31, 2018 December 31, 2017 Amortized Gross Gross Fair Value Amortized Gross Gross Fair Value Short-term investments: U.S. treasuries $ 121,252 $ 7 $ (79 ) $ 121,180 $ 57,712 $ — $ (88 ) $ 57,624 U.S. government sponsored entities 3,512 — (7 ) 3,505 7,016 — (8 ) 7,008 Corporate debt securities 11,962 — (11 ) 11,951 8,931 — (3 ) 8,928 Asset-backed securities and other 806 — (6 ) 800 — — — — $ 137,532 $ 7 $ (103 ) $ 137,436 $ 73,659 $ — $ (99 ) $ 73,560 Long-term investments: U.S. treasuries $ 44,997 $ 128 $ (115 ) $ 45,010 $ 18,111 $ 7 $ (164 ) $ 17,954 U.S. government sponsored entities 1,569 — (62 ) 1,507 5,306 — (62 ) 5,244 Corporate debt securities 32,467 3 (633 ) 31,837 22,505 268 (54 ) 22,719 Asset-backed securities and other 4,889 12 (46 ) 4,855 6,180 17 (15 ) 6,182 $ 83,922 $ 143 $ (856 ) $ 83,209 $ 52,102 $ 292 $ (295 ) $ 52,099
Amortized Cost and Fair Value of Investments in Available for Sale Securities	The amortized cost and fair value of the Company’s investments in available-for-sale December 31, 2018 December 31, 2017 Unrealized Fair Value Unrealized Fair Less than 12 months $ (576 ) $ 127,326 $ (158 ) $ 63,229 12 months or longer $ (383 ) $ 30,609 $ (236 ) $ 44,961
Gross Realized Gains and Losses from Sale of Available for Sale Securities	Gross realized gains and gross realized losses from the sales of the Company’s available-for-sale December 31, 2018 2017 Gross realized gains(1) $ 12 $ 2 Gross realized losses(1) $ (2 ) $ — (1) Recorded in other income (expense), net in the consolidated statements of net and comprehensive income. The cost basis of securities sold were determined based on the specific identification method.
Schedule of Amortized Cost and Fair Value of Marketable Securities, Available-for-Sale, by Contractual Maturity	Amortized cost and fair value of marketable securities, available-for-sale, December 31, 2018 December 31, 2017 Amortized Fair Value Amortized Fair Value Due in one year or less $ 137,532 $ 137,436 $ 73,659 $ 73,560 Due after one year through five years 61,875 61,846 30,644 30,517 Due after five years through ten years 17,310 16,747 15,090 15,200 Due after ten years 4,737 4,616 6,368 6,382 $ 221,454 $ 220,645 $ 125,761 $ 125,659 Weighted average contractual maturity 1.8 years 2.6 years

Notes Payable to Former Stock_2

Notes Payable to Former Stockholders (Tables)	12 Months Ended
	Dec. 31, 2018
Payables and Accruals [Abstract]
Schedule of Accounts Payable and Other Liabilities Pertaining to Notes	Accrued interest included in accounts payable and other liabilities in the accompanying consolidated balance sheets pertaining to the Notes consisted of the following (in thousands): December 31, 2018 2017 Accrued interest $ 271 $ 305
Schedule of Interest Expense Pertaining to Notes	Interest expense pertaining to the Notes consisted of the following (in thousands): Years Ended 2018 2017 2016 Interest expense $ 404 $ 454 $ 502
Schedule of Future Minimum Principal Payments for Notes	Future minimum principal payments on the Notes consisted of the following (in thousands): December 31, 2019 $ 1,087 2020 6,564 $ 7,651

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Assets and liabilities at Fair Value on Recurring Basis	Assets and liabilities carried at fair value on a recurring basis consisted of the following (in thousands): December 31, 2018 December 31, 2017 Fair Value Level 1 Level 2 Level 3 Fair Value Level 1 Level 2 Level 3 Assets: Assets held in rabbi trust $ 8,268 $ — $ 8,268 $ — $ 8,787 $ — $ 8,787 $ — Cash equivalents(1): Commercial paper and other $ 1,599 $ 1,599 $ — $ — $ 11,441 $ — $ 11,441 $ — Money market funds 163,126 163,126 — — 157,788 157,788 — — $ 164,725 $ 164,725 $ — $ — $ 169,229 $ 157,788 $ 11,441 $ — Marketable securities, available-for-sale: Short-term investments: U.S. treasuries $ 121,180 $ 121,180 $ — $ — $ 57,624 $ 57,624 $ — $ — U.S. government sponsored entities 3,505 — 3,505 — 7,008 — 7,008 — Corporate debt securities 11,951 — 11,951 — 8,928 — 8,928 — Asset-backed securities and other 800 — 800 — — — — — $ 137,436 $ 121,180 $ 16,256 $ — $ 73,560 $ 57,624 $ 15,936 $ — Long-term investments: U.S. treasuries $ 45,010 $ 45,010 $ — $ — $ 17,954 $ 17,954 $ — $ — U.S. government sponsored entities 1,507 — 1,507 — 5,244 — 5,244 — Corporate debt securities 31,837 — 31,837 — 22,719 — 22,719 — Asset-backed securities and other 4,855 — 4,855 — 6,182 — 6,182 — $ 83,209 $ 45,010 $ 38,199 $ — $ 52,099 $ 17,954 $ 34,145 $ — Liabilities: Contingent consideration(2) $ 2,875 $ — $ — $ 2,875 $ — $ — $ — $ — Deferred compensation liability $ 7,893 $ 7,893 $ — $ — $ 8,481 $ 8,481 $ — $ — (1) Included in cash and cash equivalents on the accompanying consolidated balance sheets. (2) Assuming the achievement of the applicable performance criteria, the Company anticipates these earn-out
Schedule of Reconciliation of Contingent Consideration Measured at Fair Value on Recurring Basis	A reconciliation of contingent consideration measured at fair value on a recurring basis consisted of the following (in thousands): December 31, 2018 2017 Beginning balance $ — $ — Contingent consideration in connection with acquisitions 2,674 — Change in fair value of contingent consideration 201 — Payments of contingent consideration — — Ending balance $ 2,875 $ —

Stock-Based Compensation Plans

Stock-Based Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Outstanding Awards Under 2013 Omnibus Equity Incentive Plan	Activity under the 2013 Plan consisted of the following (dollars in thousands, except per share data): RSA Grants Non-employee RSU Grants to RSU Grants to Total Weighted- Nonvested shares at December 31, 2016(1) 29,112 566,480 454,838 1,050,430 $ 22.38 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 Granted February 2018 — 106,419 20,293 126,712 March 2018 — 15,000 — 15,000 May 2018 12,852 4,854 14,280 31,986 August 2018 — 10,407 63,651 74,058 November 2018 — 6,080 4,242 10,322 Total Granted 12,852 142,760 102,466 258,078 34.94 Vested (16,488 ) (146,122 ) (171,114 ) (333,724 ) 22.31 Transferred — (23,755 ) 23,755 — 30.69 Forfeited/canceled — (1,960 ) (12,674 ) (14,634 ) 30.17 Nonvested shares at December 31, 2018(1) 27,096 471,782 392,697 891,575 $ 27.59 Unrecognized stock-based compensation expense as of December 31, 2018(2) $ 352 $ 9,542 $ 9,032 $ 18,926 Weighted average remaining vesting period (years) as of December 31, 2018 0.79 3.18 3.39 3.23 (1) Nonvested RSUs will be settled through the issuance of new shares of common stock. (2) The total unrecognized compensation expense is expected to be recognized over a weighted-average period of approximately 3.23 years.
Schedule of Future Share Settlements	Future share settlements of DSUs by year consisted of the following: December 31, 2018 2021 60,373 2022 281,193 341,566
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): Years Ended December 31, 2018 2017 2016 Employee stock purchase plan $ 109 $ 128 $ 169 RSAs – non-employee 632 397 422 RSUs – employees 4,233 3,750 3,130 RSUs – independent contractors(1) 7,009 4,870 3,314 $ 11,983 $ 9,145 $ 7,035 (1) The Company grants RSUs to independent contractors (i.e. investment sales and financing professionals), who are considered non-employees. 2018-7,

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Summary of Components of Income from Continuing Operations before Provision for Income Taxes	The components of income from continuing operations before provision for income taxes consisted of the following (in thousands): Years Ended December 31, 2018 2017 2016 Income (loss) before provision for income taxes: United States $ 119,446 $ 100,031 $ 108,797 Foreign (2,226 ) (805 ) (1,695 ) $ 117,220 $ 99,226 $ 107,102
Schedule of Provision (Benefit) for Income Taxes	The provision for income taxes consisted of the following (in thousands): Years Ended December 31, 2018 2017 2016 The provision (benefit) for income taxes consisted of the following: Federal: Current $ 24,101 $ 28,993 $ 36,228 Deferred (268 ) 13,249 (337 ) $ 23,833 $ 42,242 $ 35,891 State: Current $ 6,004 $ 5,883 $ 6,700 Deferred 162 (423 ) (146 ) $ 6,166 $ 5,460 $ 6,554 Foreign: Current $ — $ — $ — Deferred (36 ) — — $ (36 ) $ — $ — $ 29,963 $ 47,702 $ 42,445
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, 2018 2017 Deferred Tax Assets: Accrued expenses and bonuses $ 2,258 $ 1,307 Bad debt and other reserves 1,840 1,416 Deferred compensation 13,337 12,693 Stock-based compensation 8,912 9,144 Deferred rent 1,470 1,283 Net operating and capital loss carryforwards 2,335 1,809 Other comprehensive income 330 6 State taxes 11 622 Other 25 — Deferred tax assets before valuation allowance 30,518 28,280 Valuation allowance (2,570 ) (1,893 ) Deferred Tax Assets $ 27,948 $ 26,387 Deferred Tax Liabilities: Fixed assets $ (4,086 ) $ (2,861 ) Prepaid expenses (789 ) (886 ) Other (114 ) — Deferred Tax Liabilities (4,989 ) (3,747 ) Deferred Tax Assets, Net $ 22,959 $ 22,640
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 to income before provision for income taxes and consisted of the following (in thousands): Years Ended December 31, 2018 2017 2016 Amount Rate Amount Rate Amount Rate Income tax expense at the federal statutory rate $ 24,616 21.0 % $ 34,729 35.0 % $ 37,485 35.0 % State income tax expense, net of federal benefit 4,550 3.9 % 3,577 3.6 % 4,346 4.1 % Effect of state and foreign rate change on deferred taxes 69 0.1 % (30 ) — (79 ) (0.1 )% Windfall tax benefits, net related to stock-based compensation (1,535 ) (1.3 )% (2,568 ) (2.6 )% — — Change in valuation allowance 677 0.6 % 170 0.2 % 412 0.4 % Effect of rate and other changes on federal deferred taxes, net due to enactment of the Act — — 11,644 11.7 % — — Permanent and other items(1) 1,586 1.3 % 180 0.2 % 281 0.2 % $ 29,963 25.6 % $ 47,702 48.1 % $ 42,445 39.6 % (1) Permanent items relate principally to compensation charges and meals and entertainment.
Schedule of Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amounts of unrecognized tax benefits consisted of the following (in thousands): Years Ended December 31, 2018 2017 2016 Beginning balance $ — $ — $ — Gross increase/(decrease) as a result of positions taken: Prior periods 1,246 — — Current period — — — Settlement with tax authorities — — — Expiration of applicable statutes of limitation — — — Ending balance $ 1,246 $ — $ —

Earnings per Share (Tables)

Earnings per Share (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share, Including Antidilutive Securities Excluded from Computation of Earnings Per Share	Basic and diluted earnings per share for the years ended December 31, 2018, 2017 and 2016 consisted of the following (in thousands, except per share data): Years Ended December 31, 2018 2017 2016 Numerator (Basic and Diluted): Net income $ 87,257 $ 51,524 $ 64,657 Denominator: Basic Weighted Average Common Shares Issued and Outstanding 38,637 38,142 37,637 Deduct: Unvested RSAs(1) (30 ) (29 ) (36 ) Add: Fully vested DSUs(2) 542 875 1,298 Weighted Average Common Shares Outstanding 39,149 38,988 38,899 Basic earnings per common share $ 2.23 $ 1.32 $ 1.66 Diluted Weighted Average Common Shares Outstanding from above 39,149 38,988 38,899 Add: Dilutive effect of RSUs, RSAs & ESPP 234 112 136 Weighted Average Common Shares Outstanding 39,383 39,100 39,035 Diluted earnings per common share $ 2.22 $ 1.32 $ 1.66 Antidilutive shares excluded from diluted earnings per common share(3) 137 512 516 (1) RSAs were issued and outstanding to the non-employee one-year (2) Shares are included in weighted average common shares outstanding as the shares are fully vested but have not yet been delivered. See Note 10 – “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, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Lease Payments for Operating Leases	Future minimum lease payments under non-cancelable December 31, 2018 2019 $ 19,649 2020 19,287 2021 16,833 2022 12,368 2023 8,805 Thereafter 10,452 $ 87,394

Selected Quarterly Financial _2

Selected Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2018
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 2018 2018 2018 2018 2017 2017 2017 2017 Consolidated Financial (in thousands, except per share data) Total revenues $ 230,283 $ 210,590 $ 199,402 $ 174,541 $ 202,776 $ 183,341 $ 180,371 $ 153,212 Cost of services 148,469 132,896 119,869 101,649 131,730 114,803 110,377 89,647 Operating income 32,489 27,384 28,950 23,464 27,403 24,683 24,998 19,048 Net income 26,225 20,854 22,167 18,011 8,480 15,475 15,569 12,000 Earnings per share: Basic $ 0.67 $ 0.53 $ 0.57 $ 0.46 $ 0.22 $ 0.40 $ 0.40 $ 0.31 Diluted $ 0.66 $ 0.53 $ 0.56 $ 0.46 $ 0.22 $ 0.39 $ 0.40 $ 0.31

Description of Business and B_3

Description of Business and Basis of Presentation - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018Office
Class of Stock [Line Items]
Number of offices in the United States and Canada	80
Formation date	2013-06
Percentage of common stock distributed	80.00%
IPO MMI [Member]
Class of Stock [Line Items]
IPO completion date	Oct. 30, 2013

Accounting Policies and Recen_2

Accounting Policies and Recent Accounting Pronouncements - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018USD ($)Financial_InstitutionsOfficeSegment	Dec. 31, 2017USD ($)Office	Dec. 31, 2016USD ($)Office	Jan. 01, 2019USD ($)
Accounting Policies [Line Items]
Number of financial institutions | Financial_Institutions	5
Custodial escrow accounts	$ 2,100,000	$ 0
Property and equipment, amortization method	Straight-line
Allowance for commissions receivable	$ 0	0
Advertising costs	$ 1,100,000	824,000	$ 1,200,000
Income tax benefit realized, percentage	50.00%
Commission's receivable settled period	10 days
Number of offices | Office	80
Number of reporting units | Segment	1
Finite-lived intangible asset, amortization method	Straight-line
Marketable securities, available for sale	$ 220,645,000	$ 125,659,000
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
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
Accounting Standards Update 2018-02 [Member]
Accounting Policies [Line Items]
Reclassification of stranded tax effects from accumulated other comprehensive income to retained earnings	$ 13,000
Accounting Standards Update 2016-02 [Member] | Subsequent Event [Member]
Accounting Policies [Line Items]
Operating lease, right of use asset				$ 84,500,000
Operating lease, liability				$ 76,700,000
Accounting Standards Update 2018-13 [Member]
Accounting Policies [Line Items]
Contingent consideration liability	2,900,000
Average AA+ Credit Rating [Member] | Accounting Standards Update 2016-13 [Member]
Accounting Policies [Line Items]
Marketable securities, available for sale	$ 220,600,000
Impairment write-downs marketable securities, available for sale		$ 0
Maximum [Member]
Accounting Policies [Line Items]
Property and equipment, estimated useful lives	7 years
Finite-lived intangible asset, useful life	6 years
Maximum [Member] | Geographic Concentration Risk [Member] | Total revenues [Member] | International Revenues [Member]
Accounting Policies [Line Items]
Concentration risk percentage	1.00%	1.00%	1.00%
Minimum [Member]
Accounting Policies [Line Items]
Property and equipment, estimated useful lives	3 years
Finite-lived intangible asset, useful life	1 year
Capitalization of Internal Labor [Member]
Accounting Policies [Line Items]
Property and equipment, estimated useful lives	5 years

Acquisitions, Goodwill and Ot_3

Acquisitions, Goodwill and Other Intangible Assets - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018USD ($)Acquisition	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
Cash consideration	$ 14,926,000	$ 0	$ 0
Contingent consideration and deferred payments in connection with acquisitions	3,727,000	0	$ 0
Contingent consideration	$ 2,700,000
Number of acquisitions | Acquisition	4
Contingent consideration, maximum undiscounted payment	$ 4,200,000
Mortgage servicing assets, net	2,000,000
Fair values of intangible assets	4,240,000	0
Acquired working capital	100,000
Goodwill	11,459,000	$ 0
Other assets noncurrent	800,000
Mortgage servicing rights [Member]
Business Acquisition [Line Items]
Mortgage servicing assets	2,100,000
Mortgage servicing liabilities	$ 100,000
Minimum [Member] | Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Earn-out period for contingent consideration and deferred payments	1 year
Maximum [Member] | Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Earn-out period for contingent consideration and deferred payments	7 years

Acquisitions, Goodwill and Ot_4

Acquisitions, Goodwill and Other Intangible Assets - Summary of Goodwill and Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, gross carrying amount	$ 11,459	$ 0
Intangible assets, gross carrying amount	4,240	0
Goodwill and intangible assets, gross carrying amount, total	15,699	0
Intangible assets, accumulated amortization	(314)	0
Goodwill, net book value	11,459	0
Intangible assets, net book value	3,926	0	$ 0
Goodwill and intangible assets, net book value	$ 15,385	$ 0

Acquisitions, Goodwill and Ot_5

Acquisitions, Goodwill and Other Intangible Assets - Summary of Net Change in Carrying Value of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets, Net [Abstract]
Beginning balance	$ 0	$ 0
Additions from acquisitions	4,240	0
Amortization	(314)	0
Ending balance	$ 3,926	$ 0

Acquisitions, Goodwill and Ot_6

Acquisitions, Goodwill and Other Intangible Assets - Schedule of Estimated Amortization Expense for Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,019	$ 836
2,020	817
2,021	729
2,022	633
2,023	589
Thereafter	322
Total	$ 3,926	$ 0	$ 0

Property and Equipment, Net - S

Property and Equipment, Net - Schedule of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Less: accumulated depreciation and amortization	$ (25,104)	$ (20,789)
Property and equipment, net	19,550	17,153
Computer software and hardware equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	20,427	16,247
Furniture, fixtures, and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 24,227	$ 21,695

Property and Equipment, Net - A

Property and Equipment, Net - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Fully depreciated computer software and hardware equipment and furniture, fixtures and equipment write-off	$ 1.4	$ 2.9

Selected Balance Sheet Data - S

Selected Balance Sheet Data - Schedule of Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Assets [Line Items]
Other assets Current	$ 6,368	$ 5,529
Other assets Non-Current	31,778	23,163
Mortgage servicing rights [Member]
Other Assets [Line Items]
Other assets Current	0	0
Other assets Non-Current	2,209	0
Due from independent contractors, net [Member]
Other Assets [Line Items]
Other assets Current	3,831	3,672
Other assets Non-Current	27,157	21,726
Security deposits [Member]
Other Assets [Line Items]
Other assets Current	0	0
Other assets Non-Current	1,196	1,158
Employee Notes Receivable [Member]
Other Assets [Line Items]
Other assets Current	156	366
Other assets Non-Current	370	255
Customer trust accounts and other [Member]
Other Assets [Line Items]
Other assets Current	2,381	1,491
Other assets Non-Current	$ 846	$ 24

Selected Balance Sheet Data -_2

Selected Balance Sheet Data - Schedule of Other Assets (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Assets [Line Items]
Allowance of doubtful accounts	$ 514	$ 494
Provision for bad debt expense	291	219	$ 47
Write-off receivables	$ 271	$ 38	$ 93
Minimum [Member]
Other Assets [Line Items]
Notes receivable due period	1 year
Maximum [Member]
Other Assets [Line Items]
Notes receivable due period	4 years

Selected Balance Sheet Data -_3

Selected Balance Sheet Data - Summary of Net Change in Carrying Value of MSRs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Beginning balance	$ 0	$ 0
Additions from acquisition	2,121	0
Additions	391	0
Amortization	(303)	0
Ending balance	$ 2,209	$ 0

Selected Balance Sheet Data - A

Selected Balance Sheet Data - Additional Information (Detail)	Jan. 01, 2018	Jan. 01, 2017	Jan. 01, 2016	Jan. 01, 2014	Dec. 31, 2018USD ($)Installments	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Mar. 31, 2013USD ($)
Schedule Of Accrued Expenses [Line Items]
Servicing portfolio of commercial real estate loans, unpaid principal balance					$ 1,600,000,000	$ 0
SARs frozen liability amount					19,299,000	20,217,000
Interest expense					$ 1,400,000	1,496,000	$ 1,533,000
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 number of annual installments | Installments					10
SARs liability interest accrual commencement date					Jan. 1, 2014
SARs liability interest accrual rates	4.409%	4.446%	4.273%
Interest expense					$ 891,000	931,000	$ 914,000
Treasury note term				10 years
Base spread on SARs liability variable rate				2.00%
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					$ 1,700,000	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					$ 1,300,000	$ 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 -_4

Selected Balance Sheet Data - Summary of Deferred Rent and Other Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred Rent And Other Liabilities [Abstract]
Deferred rent and other	$ 5,445	$ 4,505
Contingent consideration	2,054	0
Deferred rent and other liabilities	$ 7,499	$ 4,505

Selected Balance Sheet Data -_5

Selected Balance Sheet Data - Summary of Deferred Rent and Other Liabilities (Parenthetical) (Detail)	Dec. 31, 2018USD ($)
Accounts Payable and Accrued Liabilities [Member]
Deferred Rent and other liabilities [Line Items]
Contingent consideration, current	$ 821,000

Selected Balance Sheet Data - C

Selected Balance Sheet Data - Components of Deferred Compensation and Commissions (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Stock appreciation rights ("SARs") liability	$ 1,810	$ 1,662
Deferred compensation liability	1,288	1,261
Deferred compensation and commissions, current	47,910	49,180
Stock appreciation rights ("SARs") liability	19,299	20,217
Deferred compensation liability	6,605	7,220
Deferred compensation and commissions, non-current	49,887	49,361
Current [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Commissions payable to investment sales and financing professionals	44,812	46,257
Non-Current [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Commissions payable to investment sales and financing professionals	$ 23,983	$ 21,924

Selected Balance Sheet Data -_6

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, 2018	Dec. 31, 2017	Dec. 31, 2016
Balance Sheet Related Disclosures [Abstract]
(Decrease) increase in the carrying value of the assets held in the rabbi trust	$ (326)	$ 849	$ 470
(Decrease) increase in the net carrying value of the deferred compensation obligation	$ (306)	$ 904	$ 452

Investments in Marketable Sec_3

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, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 221,454	$ 125,761
Fair Value	220,645	125,659
Short-term investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	137,532	73,659
Gross Unrealized Gains	7	0
Gross Unrealized Losses	(103)	(99)
Fair Value	137,436	73,560
Short-term investments [Member] | U.S. Treasuries [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	121,252	57,712
Gross Unrealized Gains	7	0
Gross Unrealized Losses	(79)	(88)
Fair Value	121,180	57,624
Short-term investments [Member] | U.S. Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,512	7,016
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(7)	(8)
Fair Value	3,505	7,008
Short-term investments [Member] | Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	11,962	8,931
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(11)	(3)
Fair Value	11,951	8,928
Short-term investments [Member] | Asset-backed securities and other [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	806	0
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(6)	0
Fair Value	800	0
Long-term marketable securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	83,922	52,102
Gross Unrealized Gains	143	292
Gross Unrealized Losses	(856)	(295)
Fair Value	83,209	52,099
Long-term marketable securities [Member] | U.S. Treasuries [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	44,997	18,111
Gross Unrealized Gains	128	7
Gross Unrealized Losses	(115)	(164)
Fair Value	45,010	17,954
Long-term marketable securities [Member] | U.S. Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,569	5,306
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(62)	(62)
Fair Value	1,507	5,244
Long-term marketable securities [Member] | Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	32,467	22,505
Gross Unrealized Gains	3	268
Gross Unrealized Losses	(633)	(54)
Fair Value	31,837	22,719
Long-term marketable securities [Member] | Asset-backed securities and other [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,889	6,180
Gross Unrealized Gains	12	17
Gross Unrealized Losses	(46)	(15)
Fair Value	$ 4,855	$ 6,182

Investments in Marketable Sec_4

Investments in Marketable Securities - Amortized Cost and Fair Value of Investments in Available for Sale Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available for sale securities continuous unrealized loss position for less than 12 months, unrealized loss	$ (576)	$ (158)
Available for sale securities continuous unrealized loss position for 12 months or longer, unrealized loss	(383)	(236)
Available for sale securities continuous unrealized loss position for less than 12 months, fair value	127,326	63,229
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value	$ 30,609	$ 44,961

Investments in Marketable Sec_5

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, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Gross realized gains	$ 12	$ 2
Gross realized losses	$ (2)	$ 0

Investments in Marketable Sec_6

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, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$ 137,532	$ 73,659
Due after one year through five years, Amortized Cost	61,875	30,644
Due after five years through ten years, Amortized Cost	17,310	15,090
Due after ten years, Amortized Cost	4,737	6,368
Amortized Cost	221,454	125,761
Due in one year or less, Fair Value	137,436	73,560
Due after one year through five years, Fair Value	61,846	30,517
Due after five years through ten years, Fair Value	16,747	15,200
Due after ten years, Fair Value	4,616	6,382
Total Fair Value	$ 220,645	$ 125,659
Weighted average contractual maturity	1 year 9 months 18 days	2 years 7 months 6 days

Notes Payable to Former Stock_3

Notes Payable to Former Stockholders - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Restricted Stock - Notes Payable [Member]
Debt Instrument [Line Items]
Unsecured notes interest rate	5.00%
Unsecured notes maturity date	Jun. 30, 2020
SARs - Notes Payable [Member]
Debt Instrument [Line Items]
Unsecured notes interest rate	5.00%
Unsecured notes maturity date	Jun. 30, 2020
Notes Payable to Former Stockholders [Member]
Debt Instrument [Line Items]
Principal and interest payments on notes payable to former stockholders	$ 1.5	$ 1.5

Notes Payable to Former Stock_4

Notes Payable to Former Stockholders - Schedule of Accounts Payable and Other Liabilities Pertaining to Notes (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts Payable and Accrued Expenses [Member]
Accounts Payable And Accrued Expenses [Line Items]
Accrued interest	$ 271	$ 305

Notes Payable to Former Stock_5

Notes Payable to Former Stockholders - Schedule of Interest Expense Pertaining to Notes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest Expense [Line Items]
Interest expense	$ 1,400	$ 1,496	$ 1,533
Notes Payable to Former Stockholders [Member]
Interest Expense [Line Items]
Interest expense	$ 404	$ 454	$ 502

Notes Payable to Former Stock_6

Notes Payable to Former Stockholders - Schedule of Future Minimum Principal Payments for Notes (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Notes Payable Future Minimum Principal Payments [Abstract]
2,019	$ 1,087	$ 1,035
2,020	6,564
Total	$ 7,651

Related-Party Transactions - Ad

Related-Party Transactions - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Rent expense for lease	$ 27,700,000	$ 25,600,000	$ 23,400,000
Aggregate principal amount for employee notes receivable	526,000	621,000
MMC [Member]
Related Party Transaction [Line Items]
Real estate brokerage commissions and financing fees from transactions with subsidiaries of Marcus & Millichap Company	7,700,000	2,100,000	5,100,000
Commission expenses for transactions with subsidiaries of Marcus & Millichap Company	4,600,000	1,200,000	3,000,000
Rent expense for lease	$ 1,000,000	1,000,000	1,000,000
Lease expiration date	May 31, 2022
Accounts payable and other liabilities - related party	$ 101,000	91,000
MMC [Member] | Transition Services Agreement [Member]
Related Party Transaction [Line Items]
Selling, general and administrative expense	$ 197,000	$ 210,000	$ 227,000
Transition services agreement date	Oct. 1, 2013
George M. Marcus [Member]
Related Party Transaction [Line Items]
Beneficial ownership percentage	41.00%

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Assets and Liabilities at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held in rabbi trust	$ 8,268	$ 8,787
Marketable securities, available for sale	220,645	125,659
Deferred compensation liability	7,893	8,481
Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	137,436	73,560
Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	83,209	52,099
U.S. Treasuries [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	121,180	57,624
U.S. Treasuries [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	45,010	17,954
U.S. Government Sponsored Entities [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	3,505	7,008
U.S. Government Sponsored Entities [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	1,507	5,244
Corporate debt securities [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	11,951	8,928
Corporate debt securities [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	31,837	22,719
Asset-backed securities and other [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	800	0
Asset-backed securities and other [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	4,855	6,182
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	164,725	169,229
Recurring [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	137,436	73,560
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	83,209	52,099
Recurring [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	1,599	11,441
Recurring [Member] | Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	163,126	157,788
Recurring [Member] | Assets held in rabbi trust [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held in rabbi trust	8,268	8,787
Recurring [Member] | U.S. Treasuries [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	121,180	57,624
Recurring [Member] | U.S. Treasuries [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	45,010	17,954
Recurring [Member] | U.S. Government Sponsored Entities [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	3,505	7,008
Recurring [Member] | U.S. Government Sponsored Entities [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	1,507	5,244
Recurring [Member] | Corporate debt securities [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	11,951	8,928
Recurring [Member] | Corporate debt securities [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	31,837	22,719
Recurring [Member] | Asset-backed securities and other [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	800	0
Recurring [Member] | Asset-backed securities and other [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	4,855	6,182
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation liability	7,893	8,481
Level 1 [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	164,725	157,788
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	121,180	57,624
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	45,010	17,954
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	1,599	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	163,126	157,788
Level 1 [Member] | Recurring [Member] | Assets held in rabbi trust [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held in rabbi trust	0	0
Level 1 [Member] | Recurring [Member] | U.S. Treasuries [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	121,180	57,624
Level 1 [Member] | Recurring [Member] | U.S. Treasuries [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	45,010	17,954
Level 1 [Member] | Recurring [Member] | U.S. Government Sponsored Entities [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 1 [Member] | Recurring [Member] | U.S. Government Sponsored Entities [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 1 [Member] | Recurring [Member] | Corporate debt securities [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 1 [Member] | Recurring [Member] | Corporate debt securities [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 1 [Member] | Recurring [Member] | Asset-backed securities and other [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 1 [Member] | Recurring [Member] | Asset-backed securities and other [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 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation liability	0	0
Level 2 [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	11,441
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	16,256	15,936
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	38,199	34,145
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	0	11,441
Level 2 [Member] | Recurring [Member] | Money market funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Level 2 [Member] | Recurring [Member] | Assets held in rabbi trust [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held in rabbi trust	8,268	8,787
Level 2 [Member] | Recurring [Member] | U.S. Treasuries [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 2 [Member] | Recurring [Member] | U.S. Treasuries [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 2 [Member] | Recurring [Member] | U.S. Government Sponsored Entities [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	3,505	7,008
Level 2 [Member] | Recurring [Member] | U.S. Government Sponsored Entities [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	1,507	5,244
Level 2 [Member] | Recurring [Member] | Corporate debt securities [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	11,951	8,928
Level 2 [Member] | Recurring [Member] | Corporate debt securities [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	31,837	22,719
Level 2 [Member] | Recurring [Member] | Asset-backed securities and other [Member] | Short-term investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	800	0
Level 2 [Member] | Recurring [Member] | Asset-backed securities and other [Member] | Long-term marketable securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities, available for sale	4,855	6,182
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation liability	0	0
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] | 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] | 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] | 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] | U.S. Treasuries [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] | U.S. Treasuries [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] | U.S. Government Sponsored Entities [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] | U.S. Government Sponsored Entities [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] | Corporate debt securities [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] | Corporate debt securities [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] | Asset-backed securities and other [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] | Asset-backed securities and other [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
Contingent Consideration [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	2,875	0	$ 0
Contingent Consideration [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	0	0
Contingent Consideration [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	0	0
Contingent Consideration [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ 2,875	$ 0

Fair Value Measurements - Sch_2

Fair Value Measurements - Schedule of Assets and Liabilities at Fair Value on Recurring Basis (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Recurring [Member] | Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Earn-out period for contingent consideration	7 years
Recurring [Member] | Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Earn-out period for contingent consideration	3 years
Contingent Consideration [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Beginning balance	$ 0	$ 0
Contingent consideration in connection with acquisitions	2,674	0
Change in fair value of contingent consideration	201	0
Payments of contingent consideration	0	0
Ending balance	$ 2,875	$ 0

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail)	Dec. 31, 2018USD ($)
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
Fair value, assets, level 1 to level 3 transfers, amount	0
Fair value, assets, level 3 to level 1 transfers, amount	0
Fair value, assets, level 2 to level 3 transfers, amount	0
Fair value, assets, level 3 to level 2 transfers, amount	$ 0

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Equity [Abstract]
Common stock, shares issued	38,814,464	38,374,011
Common stock, shares outstanding	38,814,464	38,374,011
Common stock share, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	25,000,000	25,000,000
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Undistributed earnings of foreign subsidiary	$ 0

Stock-Based Compensation Plan_2

Stock-Based Compensation Plans - 2013 Omnibus Equity Incentive Plan - Award Limitations - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018Incentive_Planshares
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Common stock shares reserved for issuance of awards	5,500,000
Common stock shares available for grant	5,491,161
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	2017-05
Equity incentive plan amendment, board of directors approval date	2017-02

Stock-Based Compensation Plan_3

Stock-Based Compensation Plans - 2013 Omnibus Equity Incentive Plan - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested shares	333,724	295,597
Tax benefit from stock-based award activity included in provision for income taxes	$ 1,900	$ 2,900
Tax benefit from stock-based award activity included in additional paid-in capital			$ 2,711
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] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
2013 Omnibus Equity Incentive Plan [Member] | Restricted Stock Awards [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
2013 Omnibus Equity Incentive Plan [Member] | Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
Vested shares	317,236
Number of common stock shares withheld to pay employee statutory withholding taxes	55,666
Shares of common stock delivered	317,236
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	92,022
Issuance of common stock for settlement of deferred stock units	237,052
Fair value of vested, during period	$ 8,300	$ 10,200	$ 10,400
Fully vested deferred stock units remaining outstanding	341,566	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 vested, during period	$ 11,100	$ 7,800	$ 7,000

Stock-Based Compensation Plan_4

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, 2018	Aug. 31, 2018	May 31, 2018	Mar. 31, 2018	Feb. 28, 2018	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares at December 31, 2016						981,855	1,050,430
Granted	10,322	74,058	31,986	15,000	126,712	258,078	264,550
Vested						(333,724)	(295,597)
Transferred						0	0
Forfeited/canceled						(14,634)	(37,528)
Nonvested shares at December 31, 2017						891,575	981,855
Nonvested weighted average grant date fair value per share, beginning balance						$ 23.90	$ 22.38
Unrecognized stock-based compensation expense as of December 31, 2018						$ 18,926
Weighted average grant date fair value per share, Granted						$ 34.94	26.86
Weighted average remaining vesting period (years) as of December 31, 2018						3 years 2 months 23 days
Weighted average grant date fair value, Vested						$ 22.31	21.21
Weighted average grant date fair value, Transferred						30.69	25.70
Weighted average grant date fair value, Forfeited/canceled						30.17	23.30
Nonvested weighted average grant date fair value per share, ending balance						$ 27.59	$ 23.90
Restricted Stock Awards [Member] | Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares at December 31, 2016						30,732	29,112
Granted	0	0	12,852	0	0	12,852	17,538
Vested						(16,488)	(15,918)
Transferred						0	0
Forfeited/canceled						0	0
Nonvested shares at December 31, 2017						27,096	30,732
Unrecognized stock-based compensation expense as of December 31, 2018						$ 352
Weighted average remaining vesting period (years) as of December 31, 2018						9 months 14 days
Restricted Stock Units [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares at December 31, 2016						500,859	566,480
Granted	6,080	10,407	4,854	15,000	106,419	142,760	164,586
Vested						(146,122)	(140,480)
Transferred						(23,755)	(58,503)
Forfeited/canceled						(1,960)	(31,224)
Nonvested shares at December 31, 2017						471,782	500,859
Unrecognized stock-based compensation expense as of December 31, 2018						$ 9,542
Weighted average remaining vesting period (years) as of December 31, 2018						3 years 2 months 4 days
Restricted Stock Units [Member] | Independent Contractors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested shares at December 31, 2016						450,264	454,838
Granted	4,242	63,651	14,280	0	20,293	102,466	82,426
Vested						(171,114)	(139,199)
Transferred						23,755	58,503
Forfeited/canceled						(12,674)	(6,304)
Nonvested shares at December 31, 2017						392,697	450,264
Unrecognized stock-based compensation expense as of December 31, 2018						$ 9,032
Weighted average remaining vesting period (years) as of December 31, 2018						3 years 4 months 20 days

Stock-Based Compensation Plan_5

Stock-Based Compensation Plans - Outstanding Awards Under 2013 Omnibus Equity Incentive Plan (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Unrecognized stock-based compensation expenses recognition period	3 years 2 months 23 days

Stock-Based Compensation Plan_6

Stock-Based Compensation Plans - Schedule of Future Share Settlements (Detail) - 2013 Omnibus Equity Incentive Plan [Member] - Deferred stock units [Member] - shares	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2,021	60,373
2,022	281,193
Total	341,566	578,618	930,419

Stock-Based Compensation Plan_7

Stock-Based Compensation Plans - Employee Stock Purchase Plan - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares available for issuance	5,491,161
Unrecognized stock-based compensation expense	$ 18,926,000
Unrecognized stock-based compensation expenses recognition period	3 years 2 months 23 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	225,894	246,895
Unrecognized stock-based compensation expense	$ 44,000
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 ESPP Plan provides for annual increases in the number of shares available for issuance under the ESPP Plan, 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 compensation committee of the board of directors.

Stock-Based Compensation Plan_8

Stock-Based Compensation Plans - Amendments to Restricted Stock and SARs - Additional Information (Detail)	Oct. 30, 2013shares
Deferred stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
DSU settlement to common stock percentage	20.00%
DSU settlement into actual stock issued term	5 years
Employee termination age	67 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]
Number of original shares subject to resale restriction	3,689,326
Sales restriction period for restricted stock	5 years

Stock-Based Compensation Plan_9

Stock-Based Compensation Plans - Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense - Independent contractors	$ 7,009	$ 4,870	$ 3,314
Allocated share-based compensation expense	11,983	9,145	7,035
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	109	128	169
Restricted Stock Awards [Member] | Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	632	397	422
Restricted Stock Units [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 4,233	$ 3,750	$ 3,130

Income Taxes - Summary of Compo

Income Taxes - Summary of Components of Income from Continuing Operations before Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income (loss) before provision for income taxes:
Income before provision for income taxes	$ 117,220	$ 99,226	$ 107,102
United States [Member]
Income (loss) before provision for income taxes:
Income before provision for income taxes	119,446	100,031	108,797
Foreign [Member]
Income (loss) before provision for income taxes:
Income before provision for income taxes	$ (2,226)	$ (805)	$ (1,695)

Income Taxes - Schedule of Prov

Income Taxes - Schedule of Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Federal:
Current	$ 24,101	$ 28,993	$ 36,228
Deferred	(268)	13,249	(337)
Provision for Income Taxes, Federal	23,833	42,242	35,891
State:
Current	6,004	5,883	6,700
Deferred	162	(423)	(146)
Provision for Income Taxes, State	6,166	5,460	6,554
Foreign:
Current	0	0	0
Deferred	(36)	0	0
Provision for Income Taxes, Foreign	(36)	0	0
Provision for income taxes	$ 29,963	$ 47,702	$ 42,445

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Tax computed at federal rate, percentage	21.00%	35.00%	35.00%
Tax Cuts and Jobs Act of 2017, completed accounting, income tax expense	$ 0	$ 11,644,000	$ 0
State and Canadian net operating losses (NOLs)	$ 9,400,000	7,800,000
State and Canadian net operating losses (NOLs), expiration year	2,033
Valuation allowance, deferred tax assets	$ 2,600,000	1,900,000
Change in valuation allowance, deferred tax assets	677,000	$ 170,000	$ 412,000
Decrease in unrecognized tax benefits that is reasonably possible	434,000
Unrecognized tax benefits related to penalties	$ 167,000
Income Tax Examination, Description	The Company is not currently under income tax examination by any taxing authority.
Undistributed earnings of foreign subsidiary	$ 0
Minimum [Member]
Income Taxes [Line Items]
Open tax years subject to tax examinations	2,014
Maximum [Member]
Income Taxes [Line Items]
Open tax years subject to tax examinations	2,018

Income Taxes - Significant Comp

Income Taxes - Significant Components of Deferred Tax Assets (Liabilities), Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred Tax Assets:
Accrued expenses and bonuses	$ 2,258	$ 1,307
Bad debt and other reserves	1,840	1,416
Deferred compensation	13,337	12,693
Stock-based compensation	8,912	9,144
Deferred rent	1,470	1,283
Net operating and capital loss carryforwards	2,335	1,809
Other comprehensive income	330	6
State taxes	11	622
Other	25	0
Deferred tax assets before valuation allowance	30,518	28,280
Valuation allowance	(2,570)	(1,893)
Deferred Tax Assets	27,948	26,387
Deferred Tax Liabilities:
Fixed assets	(4,086)	(2,861)
Prepaid expenses	(789)	(886)
Other	(114)	0
Deferred Tax Liabilities	(4,989)	(3,747)
Deferred Tax Assets, Net	$ 22,959	$ 22,640

Income Taxes - Components of Pr

Income Taxes - Components of Provision for Income Taxes and Income before Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income tax expense at the federal statutory rate, amount	$ 24,616	$ 34,729	$ 37,485
State income tax expense, net of federal benefit, amount	4,550	3,577	4,346
Effect of state and foreign rate change on deferred taxes, amount	69	(30)	(79)
Windfall tax benefits, net related to stock-based compensation, amount	(1,535)	(2,568)	0
Change in valuation allowance, amount	677	170	412
Effect of rate and other changes on federal deferred taxes, net due to enactment of the Act, amount	0	11,644	0
Permanent and other items , amount	1,586	180	281
Provision for income taxes	$ 29,963	$ 47,702	$ 42,445
Income tax expense at the federal statutory rate, rate	21.00%	35.00%	35.00%
State income tax expense, net of federal benefit rate	3.90%	3.60%	4.10%
Effect of state and foreign rate change on deferred taxes,rate	0.10%	0.00%	(0.10%)
Windfall tax benefits, net related to stock-based compensation,rate	(1.30%)	(2.60%)	0.00%
Change in valuation allowance, rate	0.60%	0.20%	0.40%
Effect of rate and other changes on federal deferred taxes, net due to enactment of the Act,rate	0.00%	11.70%	0.00%
Permanent and other items,rate	1.30%	0.20%	0.20%
Provision for income taxes, rate	25.60%	48.10%	39.60%

Income Taxes - Schedule of Reco

Income Taxes - Schedule of Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Beginning balance	$ 0	$ 0	$ 0
Prior periods	1,246	0	0
Current period	0	0	0
Settlement with tax authorities	0	0	0
Expiration of applicable statutes of limitation	0	0	0
Ending balance	$ 1,246	$ 0	$ 0

Retirement Plans - Additional I

Retirement Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
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 employer contributions	$ 920,000	$ 733,000	$ 628,000
Contribution Plan [Member] | One Year of Service [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, vesting percentage per year	33.00%
Contribution Plan [Member] | Two Year of Service [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, vesting percentage per year	66.00%
Contribution Plan [Member] | Three Year of Service [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined contribution plan, vesting percentage per year	100.00%

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, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Numerator (Basic and Diluted):
Net income	$ 26,225	$ 20,854	$ 22,167	$ 18,011	$ 8,480	$ 15,475	$ 15,569	$ 12,000	$ 87,257	$ 51,524	$ 64,657
Denominator:
Weighted Average Common Shares Issued and Outstanding									38,637	38,142	37,637
Deduct: Unvested RSAs									(30)	(29)	(36)
Add: Fully vested DSUs									542	875	1,298
Weighted Average Common Shares Outstanding									39,149	38,988	38,899
Basic earnings per common share	$ 0.67	$ 0.53	$ 0.57	$ 0.46	$ 0.22	$ 0.40	$ 0.40	$ 0.31	$ 2.23	$ 1.32	$ 1.66
Weighted Average Common Shares Outstanding from above									39,149	38,988	38,899
Add: Dilutive effect of RSUs, RSAs & ESPP Plan									234	112	136
Weighted Average Common Shares Outstanding									39,383	39,100	39,035
Diluted earnings per common share	$ 0.66	$ 0.53	$ 0.56	$ 0.46	$ 0.22	$ 0.39	$ 0.40	$ 0.31	$ 2.22	$ 1.32	$ 1.66
Antidilutive shares excluded from diluted earnings per common share									137	512	516

Earnings per Share - Computat_2

Earnings per Share - Computation of Basic and Diluted Earnings Per Share, Including Antidilutive Securities Excluded from Computation of Earnings Per Share (Parenthetical) (Detail) - Restricted Stock Awards [Member] - 2013 Omnibus Equity Incentive Plan [Member]	12 Months Ended
	Dec. 31, 2018
Minimum [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Vesting period	1 year
Maximum [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Vesting period	3 years

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Future Minimum Lease Payments for Operating Leases (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,019	$ 19,649
2,020	19,287
2,021	16,833
2,022	12,368
2,023	8,805
Thereafter	10,452
Operating Leases, Future Minimum Payments Due, Total	$ 87,394

Commitments and Contingencies_2

Commitments and Contingencies - Additional Information Operating Leases (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Deferred rent	$ 5.6	$ 4.8
Rental expense	$ 27.7	$ 25.6	$ 23.4

Commitments and Contingencies_3

Commitments and Contingencies - Additional Information Credit Agreement (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
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-monthLIBOR 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	$ 1,400,000	$ 1,496,000	$ 1,533,000
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, 2018, the Company was in compliance with all financial and non-financial covenants.
LIBOR [Member]
Line of Credit Facility [Line Items]
Base spread on variable rate	1.50%
Federal Funds Rate [Member]
Line of Credit Facility [Line Items]
Base spread on variable rate	1.50%
Credit Agreement [Member]
Line of Credit Facility [Line Items]
Interest expense	$ 104,000	$ 110,000	$ 116,000
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 Contingencies_4

Commitments and Contingencies - Additional Information Other (Detail) $ in Millions	Dec. 31, 2018USD ($)
Commitments and Contingencies Disclosure [Abstract]
Other commitment amount	$ 1

Selected Quarterly Financial _3

Selected Quarterly Financial Data - Schedule of Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Consolidated Financial Statement Data:
Total revenues	$ 230,283	$ 210,590	$ 199,402	$ 174,541	$ 202,776	$ 183,341	$ 180,371	$ 153,212
Cost of services	148,469	132,896	119,869	101,649	131,730	114,803	110,377	89,647	$ 502,883	$ 446,557	$ 444,768
Operating income	32,489	27,384	28,950	23,464	27,403	24,683	24,998	19,048	112,287	96,132	106,501
Net income	$ 26,225	$ 20,854	$ 22,167	$ 18,011	$ 8,480	$ 15,475	$ 15,569	$ 12,000	$ 87,257	$ 51,524	$ 64,657
Earnings per share:
Basic	$ 0.67	$ 0.53	$ 0.57	$ 0.46	$ 0.22	$ 0.40	$ 0.40	$ 0.31	$ 2.23	$ 1.32	$ 1.66
Diluted	$ 0.66	$ 0.53	$ 0.56	$ 0.46	$ 0.22	$ 0.39	$ 0.40	$ 0.31	$ 2.22	$ 1.32	$ 1.66