Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Additional Information (Detail)

v2.4.0.8
Stock-Based Compensation - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized stock-based compensation expenses recognition period     4 years 2 months 5 days  
Stock based compensation $ 1,417 $ 2,053 $ 3,275 $ 4,679
Deemed capital contribution from former parent, Marcus & Millichap Company       2,655
SARs Liability frozen value date     Mar. 31, 2013  
Notes receivable from employees [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Notes issued, interest rate       5.00%
Notes issued, interest rate       6.00%
Notes issued, payment date     Apr. 15, 2016  
Deferred stock units [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
DSU settlement into actual stock issued term     5 years  
DSU settlement to common stock percentage     20.00%  
Employee termination age     67  
Percentage of deferred stock units settled     100.00%  
Percentage of shares of deferred stock units released from resale restriction     100.00%  
Restricted Stock [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted common stock issued, vesting period     3 years  
Restricted Stock [Member] | Sales Restricted [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Sales restriction lapse percentage for restricted stock     20.00%  
Sales restriction period for restricted stock     5 years  
Employee termination age     67  
Percentage of shares of stock released from resale restriction upon consummation of change of control     100.00%  
Pre-IPO [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Terms of issued options     One year or less  
Stock options exercised   0   750
Number of stock option redemption or cancelations   0   0
Unrecognized stock-based compensation expenses recognition period     4 years  
Stock based compensation   2,100   4,700
Deemed capital contribution from former parent, Marcus & Millichap Company   $ 1,200   $ 2,700
Pre-IPO [Member] | Minimum [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted common stock issued, vesting period       3 years
Pre-IPO [Member] | Maximum [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted common stock issued, vesting period       5 years