Quarterly report pursuant to Section 13 or 15(d)

Related-Party Transactions - Additional Information (Detail)

v3.5.0.2
Related-Party Transactions - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Related Party Transaction [Line Items]            
Transition services agreement date   Oct. 01, 2013        
Real estate brokerage commissions and financing fees from transactions with former parent, Marcus & Millichap Company   $ 793,000 $ 238,000 $ 2,400,000 $ 1,300,000  
Commission expenses for transactions with former parent, Marcus & Millichap Company   476,000 143,000 1,400,000 770,000  
Aggregate principal amount outstanding for employee notes receivable $ 476,000 476,000   476,000   $ 382,000
MMC [Member]            
Related Party Transaction [Line Items]            
Rent expense for lease   $ 253,000 146,000 506,000 255,500  
Lease expiration date   May 31, 2022        
MMC [Member] | Transition Services Agreement [Member]            
Related Party Transaction [Line Items]            
Selling, general and administrative expense   $ 54,000 $ 59,000 124,000 $ 109,000  
Accounts payable and other accrued expenses - related party $ 103,000 $ 103,000   $ 103,000   $ 96,000
George M. Marcus [Member]            
Related Party Transaction [Line Items]            
Beneficial ownership percentage 55.20%