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v3.21.2

Significant Accounting Policies - Summary of Reclassifications of Consolidated Statements of Operations and Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Operating Revenues: |  |  |  |
Total revenues | $ 78,112 | $ 63,749 | $ 225,143 | $ 184,260
Operating Expenses: |  |  |  |
Fund management and administration | 15,181 | 14,328 | 43,495 | 41,785
Total operating expenses | 53,909 | 49,005 | 158,648 | 142,085
Advisory Fees [Member] |  |  |  |
Operating Revenues: |  |  |  |
Total revenues | $ 76,400 | 63,028 | $ 220,611 | 181,697
Fund Management And Administration [Member] |  |  |  |
Operating Expenses: |  |  |  |
Fund management and administration |  | 14,328 |  | 41,785
Previously Reported [Member] |  |  |  |
Operating Revenues: |  |  |  |
Total revenues |  | 64,640 |  | 186,640
Operating Expenses: |  |  |  |
Total operating expenses |  | 49,896 |  | 144,465
Previously Reported [Member] | Advisory Fees [Member] |  |  |  |
Operating Revenues: |  |  |  |
Total revenues |  | 63,919 |  | 184,077
Previously Reported [Member] | Fund Management And Administration [Member] |  |  |  |
Operating Expenses: |  |  |  |
Fund management and administration |  | 15,219 |  | 44,165
Adjustment [Member] |  |  |  |
Operating Revenues: |  |  |  |
Amounts collected on behalf of third parties |  | (891) |  | (2,380)
Operating Expenses: |  |  |  |
Amounts collected on behalf of third parties |  | (891) |  | (2,380)
Adjustment [Member] | Advisory Fees [Member] |  |  |  |
Operating Revenues: |  |  |  |
Amounts collected on behalf of third parties |  | (891) |  | (2,380)
Adjustment [Member] | Fund Management And Administration [Member] |  |  |  |
Operating Expenses: |  |  |  |
Amounts collected on behalf of third parties |  | $ (891) |  | $ (2,380)

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