Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

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Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Income Taxes Disclosure [Line Items]          
Net deferred tax assets $ 12,731   $ 12,731   $ 12,093
Net deferred tax asset 12,913   12,913   12,206
Net deferred tax liabilities relating to non-controlling interests 66   66    
Current tax expense 776 $ 1,397 1,798 $ 3,808  
Corporate tax expense 428   610    
Deferred tax expense 725 (84) 1,885 127  
Provision for income taxes 1,501 1,313 3,682 3,935  
Income tax expense (benefit) for discrete items 240   $ 240    
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 134 243 $ 450 685  
Deferred tax expense 7 (27) 27 (55)  
Provision for income taxes 141 $ 216 477 $ 630  
Silvercrest L.P          
Income Taxes Disclosure [Line Items]          
Net deferred tax liability 104   104   20
Corporate tax expense 347   1,185    
Silvercrest Financial Services Inc          
Income Taxes Disclosure [Line Items]          
Net deferred tax liability 78   78   $ 93
Corporate tax expense $ 1   $ 3