Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Summary of Investments Valued Using NAV Per Share (Detail)

v3.22.1
Fair Value Measurements - Summary of Investments Valued Using NAV Per Share (Detail) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value $ 10,950 $ 8,035
BRIDGE INVESTMENT GROUP HOLDINGS LLC [Member] | Measured at NAV [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value 53,888 39,685
Unfunded Commitments 8,185 23,321
BRIDGE INVESTMENT GROUP HOLDINGS LLC [Member] | Measured at NAV [Member] | Accrued Performance Allocations [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value 505,410 439,548
Unfunded Commitments 0 0
BRIDGE INVESTMENT GROUP HOLDINGS LLC [Member] | Measured at NAV [Member] | Company Sponsored Open-end Fund [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value 14,440 15,474
Unfunded Commitments 0 0
BRIDGE INVESTMENT GROUP HOLDINGS LLC [Member] | Measured at NAV [Member] | Company Sponsored Closed-end Funds [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value 28,983 16,510
Unfunded Commitments 3,927 20,885
BRIDGE INVESTMENT GROUP HOLDINGS LLC [Member] | Measured at NAV [Member] | Third Party Closed-end Funds [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value 10,465 7,701
Unfunded Commitments $ 4,258 $ 2,436