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Income Tax - Income Tax Expense Differs from Computed Income Tax at Statutory Rates (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Income Tax Disclosure [Abstract]        
Computed income tax at statutory rates     $ 32,357 $ 34,513
Differences in tax rates due to multiple jurisdictions     1,155 960
Effect of income subject to tax-exemption grant     (20,440) (23,863)
Unrecognized tax (benefit) expense     122 (3,580)
Excess tax benefits on share-based compensation     (21) (976)
Other, net     690 286
Income tax expense $ 7,688 $ 2,632 $ 13,863 $ 7,340