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INCOME TAXES
9 Months Ended
Sep. 30, 2019
INCOME TAXES.  
INCOME TAXES

10.  INCOME TAXES

The Company determines its periodic income tax provision based upon the current period income and the annual estimated tax rate for the Company adjusted for discrete items including tax credits and changes to prior year estimates. The estimated tax rate is revised, if necessary, as of the end of each successive interim period during the fiscal year to the Company’s current annual estimated tax rate.

Income tax provision for the third quarter of 2019 reflects an effective tax rate of 19.8 percent, compared to an effective tax rate of 22.9 percent for the comparable period in the prior year. For the nine months ended September 30, 2019, the effective tax rate reflects an income tax provision of 18.2 percent compared to 19.7 percent for the comparable period in the prior year. The slight decrease in effective rate is primarily due to an increase in tax exempt investment gains in 2019 as compared to the same period in 2018. The effective rate in all periods includes the effect of beneficial permanent differences including discrete adjustments related to restricted stock dividends.