| Income Taxes - Additional Information (Detail) - BRIDGE INVESTMENT GROUP HOLDINGS LLC [Member] - USD ($) $ in Thousands | 2 Months Ended | 3 Months Ended | 
|---|---|---|
| Aug. 31, 2021 | Sep. 30, 2021 | |
| Income Tax Disclosure [Line Items] | ||
| Increase In Deferred Tax Assets | $ 62,200 | |
| Tax Receivable Agreement Liability | $ 44,400 | |
| Incremental tax saving percentage | 85.00% | |
| Effective tax rate | 2.00% | |
| Unrecognized tax positions | $ 0 | 
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- References No definition available. 
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- Definition Increase In Deferred Tax Assets No definition available. 
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- Definition Tax Receivable Agreement Liability No definition available. 
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- Definition Tax Savings Percentage No definition available. 
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Details 
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