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Income Taxes - Summary of Actual Income Tax Expense and Amount Calculated Utilizing U.S. Federal Statutory Rates (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract] |  |  |  |  |  |  |  |  |  |  |
Tax expense at federal statutory rate |  |  |  |  |  |  |  |  | $ 16,360 | $ 25,633 | $ 36,103
Non-controlling interest |  |  |  |  |  |  |  |  | 73 | 3,466 | (3,544)
Incremental impact of foreign taxes compared to federal tax rate |  |  |  |  |  |  |  |  | (476) | 7,935 | 2,739
Other permanent differences |  |  |  |  |  |  |  |  | 5,337 | 3,397 | 6,051
U.S. state and local taxes, net of U.S. federal benefit |  |  |  |  |  |  |  |  | (321) | (2,650) | (539)
New York City UBT |  |  |  |  |  |  |  |  | (3,256) | (392) | (514)
Other rate changes |  |  |  |  |  |  |  |  | (12,783) | 10,509 | 4,024
Revaluation of deferred taxes related to tax reform |  |  |  |  |  |  |  |  |  |  | 4,776
Uncertain tax positions |  |  |  |  |  |  |  |  | 1,475 | (1,025) | 2,764
U.S. tax on foreign earnings, net of tax credits |  |  |  |  |  |  |  |  | 2,643 | 3,166 | 2,163
Return-to-provision adjustments |  |  |  |  |  |  |  |  | 1,076 | (3,937) | 2,598
Valuation allowance |  |  |  |  |  |  |  |  | 11,966 | 4,015 | 2,567
Other |  |  |  |  |  |  |  |  | (791) | (306) | 4,580
Provision for income taxes | $ (6,729) | $ 8,558 | $ 8,599 | $ 10,875 | $ 4,075 | $ 6,691 | $ 13,261 | $ 25,784 | $ 21,303 | $ 49,811 | $ 63,768

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