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Stockholders' Equity - Net Income (Loss) Attributable to Noncontrolling Interests (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Change In Ownership Interest [Line Items] |  |  |
Net Income (Loss) Attributable to Noncontrolling Interests | $ 34,966 | $ 14,481 | $ 231
Noncontrolling interests | 118,936 | 102,744 |
Profits Interest Participation Rights [Member] |  |  |
Change In Ownership Interest [Line Items] |  |  |
Noncontrolling interests | 10,792 | 4,049 |
LFI Consolidated Funds [Member] |  |  |
Change In Ownership Interest [Line Items] |  |  |
Net Income (Loss) Attributable to Noncontrolling Interests | (11,415) | 7,950 | 2,577
Noncontrolling interests | 74,164 | 67,299 |
Edgewater [Member] |  |  |
Change In Ownership Interest [Line Items] |  |  |
Net Income (Loss) Attributable to Noncontrolling Interests | 31,314 | 10,466 | (2,349)
Noncontrolling interests | 44,681 | 44,826 |
LGAC [Member] |  |  |
Change In Ownership Interest [Line Items] |  |  |
Net Income (Loss) Attributable to Noncontrolling Interests | 15,064 | (3,940) |
Noncontrolling interests | (10,714) | (13,445) |
Other [Member] |  |  |
Change In Ownership Interest [Line Items] |  |  |
Net Income (Loss) Attributable to Noncontrolling Interests | 3 | 5 | $ 3
Noncontrolling interests | $ 13 | $ 15 |

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