Quarterly report pursuant to Section 13 or 15(d)

Related-Party Transactions - Additional Information (Detail)

v3.4.0.3
Related-Party Transactions - Additional Information (Detail) - USD ($)
3 Months Ended
Mar. 31, 2016
Mar. 31, 2016
Mar. 31, 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   $ 1,600,000 $ 1,000,000  
Commission expenses for transactions with former parent, Marcus & Millichap Company   944,000 627,000  
Aggregate principal amount outstanding for employee notes receivable $ 275,000 275,000   $ 382,000
MMC [Member]        
Related Party Transaction [Line Items]        
Rent expense for lease   $ 253,000 109,500  
Lease expiration date   May 31, 2022    
MMC [Member] | Transition Services Agreement [Member]        
Related Party Transaction [Line Items]        
Selling, general and administrative expense   $ 70,000 $ 50,000  
Accounts payable and other accrued expenses - related party $ 32,000 $ 32,000   $ 96,000
George M. Marcus [Member]        
Related Party Transaction [Line Items]        
Beneficial indirect ownership percentage 55.50%