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Compensation - Compensation Expense Related to Class A Common Stock (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
LPU amortization | $ 19,524 | $ 10,689 | $ 35,833 | $ 13,734
RSU amortization | 3,273 | 2,696 | 4,855 | 3,710
Equity-based compensation and allocations of net income to limited partnership units and FPUs | 27,819 | 43,752 | 70,023 | 55,893
LPUs [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Issuance of common stock and grants of exchangeability | 2,362 | 25,587 | 25,396 | 29,123
Class A Common Stock [Member] | LPUs [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Issuance of common stock and grants of exchangeability | 2,362 | 25,587 | 25,396 | 29,123
Allocations of net income | 2,660 | 4,780 | 3,939 | 9,326
LPU amortization | 19,524 | 10,689 | 35,833 | 13,734
RSU amortization | 3,273 | 2,696 | 4,855 | 3,710
Equity-based compensation and allocations of net income to limited partnership units and FPUs | $ 27,819 | $ 43,752 | $ 70,023 | $ 55,893

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- Definition Aggregate amount of net income allocated to limited partners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187171-122770 + Details
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