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Quarterly report pursuant to Section 13 or 15(d)

Income Taxes

v3.21.1
Income Taxes
3 Months Ended
Mar. 31, 2021
Income Tax Disclosure [Abstract] Ìý
Income Taxes Income Taxes
The calculation of our effective tax rate is as follows for the three months ended March 31, 2021 and 2020 (in thousands, except percentages):

Three Months Ended
March 31,
2021 2020
Income before income taxes $ 62,027Ìý $ 71,368Ìý
Income tax expense $ 11,975Ìý $ 13,967Ìý
Effective tax rate 19.3Ìý % 19.6Ìý %

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