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Income Taxes - Summary of Differences In Effective Tax Rate and Federal Statutory Rate Due to State Income Taxes, Equity Compensation and Other Tax Items (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Income Tax Disclosure [Abstract]    
Total income before income taxes $ 195,193 $ 7,107
U.S. federal statutory rate 21.00% 21.00%
Total tax expense at statutory rate $ 40,991 $ 1,492
State and local income taxes, net of federal benefit 5,803 818
Equity compensation 3,843 3,391
Change in valuation allowances:    
Federal net operating loss carryforwards (1,313) 0
State net operating loss carryforwards and other 2,800 352
Other (537) 231
Permanent differences and other (1,369) (596)
Total (benefit) expense for income taxes $ 50,218 $ 5,688
Effective tax rate 25.70% 80.00%