Marcus & Millichap, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Description of business, basis of presentation and recent accounting pronouncements (Policies)
Notes Tables
Notes Details

Description of Business, Basis of Presentation and Recent Accounting Pronouncements - Additional Information (Detail)

v3.5.0.2

Description of Business, Basis of Presentation and Recent Accounting Pronouncements - Additional Information (Detail) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($) Office	Sep. 30, 2015	Sep. 30, 2016 USD ($) Office	Sep. 30, 2015
Class of Stock [Line Items]
Number of offices in the United States and Canada \| Office			81
Formation date			2013-06
Percentage of common stock distributed			80.00%
IPO completion date			Oct. 30, 2013
Commission's receivable settled period			10 days
Operating lease obligations \| $	$ 77.1		$ 77.1
Geographic Concentration Risk [Member] \| Real Estate Brokerage Commissions Revenue [Member]
Class of Stock [Line Items]
Concentration risk percentage	10.90%		10.10%
Number of offices	1	0	1	0
Geographic Concentration Risk [Member] \| Real Estate Brokerage Commissions Revenue [Member] \| Minimum [Member]
Class of Stock [Line Items]
Concentration risk percentage		10.00%		10.00%
Customer Concentration Risk [Member] \| Total revenues [Member]
Class of Stock [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%	10.00%
Customer Concentration Risk [Member] \| Commissions receivable [Member]
Class of Stock [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%	10.00%
International Revenues [Member] \| Geographic Concentration Risk [Member] \| Total revenues [Member] \| Maximum [Member]
Class of Stock [Line Items]
Concentration risk percentage			1.00%

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