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INCOME TAXES
3 Months Ended
Jun. 30, 2021
Income Tax Disclosure [Abstract]  
INCOME TAXES

(L) INCOME TAXES   

Income Taxes for the interim periods presented have been included in the accompanying financial statements on the basis of an estimated annual effective tax rate. In addition to the amount of tax resulting from applying the estimated annual effective tax rate to pre-tax income, we will include, when appropriate, certain items treated as discrete events to arrive at an estimated overall tax amount. The effective tax rate for the three months ended June 30, 2021 was approximately 22%, which was lower than the tax rate of 25% for the three months ended June 30, 2020. The effective tax rate was higher than the US Statutory rate of 21% mainly due to state income taxes, partially offset by a benefit recognized related to percentage depletion.