Quarterly report pursuant to Section 13 or 15(d)

Revenue - Additional Information (Detail)

v3.21.2
Revenue - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
BRIDGE INVESTMENT GROUP HOLDINGS LLC [Member]          
Disaggregation of Revenue [Line Items]          
Deferred revenues $ 5.9   $ 5.9   $ 2.9
Deferred Revenue, Revenue Recognized $ 0.3   $ 2.3    
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | No Customer [Member] | Minimum [Member]          
Disaggregation of Revenue [Line Items]          
Concentration Risk, Percentage 10.00% 10.00% 10.00% 10.00%