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Quarterly report pursuant to Section 13 or 15(d)

Income Taxes

v3.21.2
Income Taxes
 9 Months Ended
Sep. 30, 2021
Income Tax Disclosure [Abstract] Ìý
Income Taxes Income Taxes
The calculation of our effective tax rate is as follows for the three and nine months ended September 30, 2021 and 2020 (in thousands, except percentages):
Three Months Ended
September 30,		 Nine Months Ended
September 30,
2021 2020 2021 2020
Income before income taxes $ 103,753Ìý $ 58,035Ìý $ 237,456Ìý $ 164,325Ìý
Income tax expense $ 19,916Ìý $ 11,760Ìý $ 46,521Ìý $ 33,067Ìý
Effective tax rate 19.2Ìý % 20.3Ìý % 19.6Ìý % 20.1Ìý %

The effective tax rates were lower than the U.S. federal statutory rate of 21% primarily due to statutory depletion allowed on mineral royalty income.