Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.10.0.1
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Income Taxes Disclosure [Line Items]          
Net deferred tax assets $ 12,211   $ 12,211   $ 11,612
Net deferred tax asset 12,299   12,299   $ 11,838
Net Deferred tax liabilities relating to non-controlling interests 34   34    
Current tax expense 1,397 $ 1,238 3,808 $ 3,302  
Corporate tax expense 779   2,078    
Deferred tax expense (84) 366 127 1,273  
Provision for income taxes 1,313 1,604 $ 3,935 4,575  
Additional tax benefits on discrete items       32  
Corporate tax rate     21.00%   35.00%
Income tax settlement     The amount recognized is measured as the largest amount of benefit that is greater than 50% likely of being realized upon ultimate settlement    
Non-controlling Interest          
Income Taxes Disclosure [Line Items]          
Current tax expense 243 197 $ 685 579  
Deferred tax expense (27) 0 (55) 4  
Provision for income taxes 216 $ 197 630 $ 583  
Silvercrest L.P          
Income Taxes Disclosure [Line Items]          
Deferred tax asset 10   10    
Net deferred tax liability         $ 113
Corporate tax expense 617   1,726    
Silvercrest Financial Services Inc          
Income Taxes Disclosure [Line Items]          
Net deferred tax liability 98   98   $ 113
Corporate tax expense $ 1   $ 4