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Income Taxes
9 Months Ended
Sep. 30, 2019
Income Taxes  
Income Taxes

12.      Income Taxes

For the nine months ended September 30, 2019, the Company recorded an income tax benefit of $10,681, which resulted in an effective tax rate of 29.4%. The tax benefit primarily consists of $5,995 based on the estimated effective tax rate for the full year and $4,072 of windfall tax benefits generated from the vesting of restricted stock, disqualifying dispositions and exercising of nonqualified stock options during the period.

For the nine months ended September 30, 2018, the Company recorded an income tax benefit of $4,107, which resulted in an effective tax rate of 10.1%. The tax benefit consists of $4,451 related to windfall tax benefits generated from the vesting of restricted stock, disqualifying dispositions and exercising of nonqualified stock options during the period. The benefit was offset by tax expense of $345 based on the estimated effective tax rate for the full year.