Quarterly report pursuant to Section 13 or 15(d)

Organization - Additional Information (Detail)

v3.21.2
Organization - Additional Information (Detail)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Aug. 12, 2021
USD ($)
shares
Jul. 20, 2021
USD ($)
$ / shares
shares
Sep. 30, 2021
USD ($)
Vote
Sep. 30, 2021
USD ($)
Vote
shares
IPO [Member]        
Subsidiary or Equity Method Investee [Line Items]        
Company issued values of common stock | $     $ 137,318 $ 137,318
IPO [Member] | Common Class A [Member]        
Subsidiary or Equity Method Investee [Line Items]        
Company issued values of common stock | $     $ 187 187
BRIDGE INVESTMENT GROUP HOLDINGS INC [Member]        
Subsidiary or Equity Method Investee [Line Items]        
Company issued values of common stock | $       $ 100
Issuance of common stock, shares | shares       100
Percentage of ownership     100.00% 100.00%
BRIDGE INVESTMENT GROUP HOLDINGS INC [Member] | Capital Unit, Class A [Member]        
Subsidiary or Equity Method Investee [Line Items]        
Common units purchased during the year units | shares 1,416,278      
BRIDGE INVESTMENT GROUP HOLDINGS INC [Member] | Class B Units [Member]        
Subsidiary or Equity Method Investee [Line Items]        
Percentage of ownership     100.00% 100.00%
BRIDGE INVESTMENT GROUP HOLDINGS INC [Member] | Common Class A [Member]        
Subsidiary or Equity Method Investee [Line Items]        
Common stock, number of votes | Vote     1 1
BRIDGE INVESTMENT GROUP HOLDINGS INC [Member] | Common Class A [Member] | Greenshoe [Member]        
Subsidiary or Equity Method Investee [Line Items]        
Issuance of common stock, shares | shares 1,416,278      
Percentage of the proceeds used to buy common stock units 100.00%      
Proceeds from the issuance of common stock | $ $ 18,200      
BRIDGE INVESTMENT GROUP HOLDINGS INC [Member] | IPO [Member]        
Subsidiary or Equity Method Investee [Line Items]        
Issuance of common stock, shares | shares   18,750,000    
Sale of stock per share | $ / shares   $ 16.00    
Net Proceeds From intial public offering | $   $ 277,200    
BRIDGE INVESTMENT GROUP HOLDINGS INC [Member] | IPO [Member] | Common Class A [Member]        
Subsidiary or Equity Method Investee [Line Items]        
Issuance of common stock, shares | shares       20,166,278,000
BRIDGE INVESTMENT GROUP HOLDINGS LLC [Member] | Operating Company [Member]        
Subsidiary or Equity Method Investee [Line Items]        
Percentage of ownership     23.00% 23.00%
BRIDGE INVESTMENT GROUP HOLDINGS LLC [Member] | Class A Units [Member] | Operating Company [Member]        
Subsidiary or Equity Method Investee [Line Items]        
Payments For Repurchase Of Equity | $   $ 137,100    
BRIDGE INVESTMENT GROUP HOLDINGS LLC [Member] | IPO [Member] | Class A Units [Member]        
Subsidiary or Equity Method Investee [Line Items]        
Issuance of common stock, shares | shares   18,750,000,000