| Selected Quarterly Financial Data (Unaudited) | 
 The following is a summary of the quarterly results of operations of the Company for the years ended December 31, 2018 and 2017.  
  
| 
   
 | 
    
 | 
 2018 
 | 
   
 | 
 
| 
   
 | 
    
 | 
 First Quarter 
 | 
   
 | 
    
 | 
 Second Quarter 
 | 
   
 | 
    
 | 
 Third Quarter 
 | 
   
 | 
    
 | 
 Fourth Quarter 
 | 
   
 | 
 
| 
 Revenue 
 | 
    
 | 
 $ 
 | 
 24,331 
 | 
    
 | 
    
 | 
 $ 
 | 
 24,577 
 | 
    
 | 
    
 | 
 $ 
 | 
 24,932 
 | 
    
 | 
    
 | 
 $ 
 | 
 24,833 
 | 
   
 | 
 
| 
 Income before other income (expense), net 
 | 
    
 | 
 $ 
 | 
 5,294 
 | 
    
 | 
    
 | 
 $ 
 | 
 5,453 
 | 
    
 | 
    
 | 
 $ 
 | 
 5,166 
 | 
    
 | 
    
 | 
 $ 
 | 
 5,239 
 | 
   
 | 
 
| 
 Net income 
 | 
    
 | 
 $ 
 | 
 4,050 
 | 
    
 | 
    
 | 
 $ 
 | 
 4,193 
 | 
    
 | 
    
 | 
 $ 
 | 
 3,893 
 | 
    
 | 
    
 | 
 $ 
 | 
 5,232 
 | 
   
 | 
 
| 
 Net income (loss) attributable to Silvercrest 
 | 
    
 | 
 $ 
 | 
 2,231 
 | 
   
 | 
    
 | 
 $ 
 | 
 2,337 
 | 
   
 | 
    
 | 
 $ 
 | 
 2,162 
 | 
    
 | 
    
 | 
 $ 
 | 
 2,900 
 | 
   
 | 
 
| 
 Net income (loss) per share/unit - basic 
 | 
    
 | 
 $ 
 | 
 0.27 
 | 
   
 | 
    
 | 
 $ 
 | 
 0.28 
 | 
   
 | 
    
 | 
 $ 
 | 
 0.26 
 | 
    
 | 
    
 | 
 $ 
 | 
 0.35 
 | 
   
 | 
 
| 
 Net income (loss) per share/unit - diluted 
 | 
   
 | 
 $ 
 | 
 0.27 
 | 
   
 | 
   
 | 
 $ 
 | 
 0.28 
 | 
   
 | 
   
 | 
 $ 
 | 
 0.26 
 | 
    
 | 
    
 | 
 $ 
 | 
 0.35 
 | 
   
 | 
 
| 
 Weighted average shares/units outstanding - basic 
 | 
    
 | 
   
 | 
 8,187,279 
 | 
   
 | 
    
 | 
   
 | 
 8,288,392 
 | 
   
 | 
    
 | 
   
 | 
 8,321,927 
 | 
    
 | 
    
 | 
   
 | 
 8,393,294 
 | 
    
 | 
 
| 
 Weighted average shares/units outstanding - diluted 
 | 
    
 | 
   
 | 
 8,192,966 
 | 
   
 | 
    
 | 
   
 | 
 8,292,809 
 | 
   
 | 
    
 | 
   
 | 
 8,325,718 
 | 
    
 | 
    
 | 
   
 | 
 8,397,085 
 | 
    
 | 
 
 
 
  
| 
   
 | 
   
 | 
 2017 
 | 
   
 | 
 
| 
   
 | 
    
 | 
 First Quarter 
 | 
   
 | 
    
 | 
 Second Quarter 
 | 
   
 | 
    
 | 
 Third Quarter 
 | 
   
 | 
    
 | 
 Fourth Quarter 
 | 
   
 | 
 
| 
 Revenue 
 | 
    
 | 
 $ 
 | 
 21,951 
 | 
    
 | 
    
 | 
 $ 
 | 
 22,091 
 | 
    
 | 
    
 | 
 $ 
 | 
 22,845 
 | 
    
 | 
    
 | 
 $ 
 | 
 24,471 
 | 
    
 | 
 
| 
 Income before other income (expense), net 
 | 
    
 | 
 $ 
 | 
 4,747 
 | 
    
 | 
    
 | 
 $ 
 | 
 5,154 
 | 
    
 | 
    
 | 
 $ 
 | 
 5,316 
 | 
    
 | 
    
 | 
 $ 
 | 
 5,152 
 | 
    
 | 
 
| 
 Net income 
 | 
    
 | 
 $ 
 | 
 3,300 
 | 
    
 | 
    
 | 
 $ 
 | 
 3,600 
 | 
    
 | 
    
 | 
 $ 
 | 
 3,714 
 | 
    
 | 
    
 | 
 $ 
 | 
 1,917 
 | 
    
 | 
 
| 
 Net income attributable to Silvercrest 
 | 
   
 | 
 $ 
 | 
 1,687 
 | 
   
 | 
    
 | 
 $ 
 | 
 1,858 
 | 
   
 | 
    
 | 
 $ 
 | 
 1,872 
 | 
    
 | 
    
 | 
 $ 
 | 
 (80 
 | 
 ) 
 | 
 
| 
 Net income per share/unit - basic 
 | 
    
 | 
 $ 
 | 
 0.21 
 | 
   
 | 
    
 | 
 $ 
 | 
 0.23 
 | 
   
 | 
    
 | 
 $ 
 | 
 0.23 
 | 
    
 | 
    
 | 
 $ 
 | 
 (0.01 
 | 
 ) 
 | 
 
| 
 Net income per share/unit – diluted 
 | 
   
 | 
 $ 
 | 
 0.21 
 | 
   
 | 
   
 | 
 $ 
 | 
 0.23 
 | 
   
 | 
   
 | 
 $ 
 | 
 0.23 
 | 
    
 | 
    
 | 
 $ 
 | 
 (0.01 
 | 
 ) 
 | 
 
| 
 Weighted average shares/units outstanding - basic 
 | 
    
 | 
   
 | 
 8,078,643 
 | 
   
 | 
    
 | 
   
 | 
 8,104,697 
 | 
   
 | 
    
 | 
   
 | 
 8,119,444 
 | 
    
 | 
    
 | 
   
 | 
 8,136,986 
 | 
    
 | 
 
| 
 Weighted average shares/units outstanding - diluted 
 | 
    
 | 
   
 | 
 8,089,225 
 | 
   
 | 
    
 | 
   
 | 
 8,111,930 
 | 
   
 | 
    
 | 
   
 | 
 8,125,131 
 | 
    
 | 
    
 | 
   
 | 
 8,136,986 
 | 
    
 | 
 
 
 
 |