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Income Taxes
6 Months Ended
Jun. 30, 2019
Income Taxes  
Income Taxes

12.      Income Taxes

For the six months ended June 30, 2019, the Company recorded an income tax benefit of $6,580, which resulted in an effective tax rate of 27.3%. The tax benefit primarily consists of $3,884 based on the estimated effective tax rate for the full year and $2,186 of windfall tax benefits generated from the vesting of restricted stock, disqualifying dispositions and exercising of nonqualified stock options during the period.

For the six months ended June 30, 2018, the Company recorded an income tax benefit of $3,269, which resulted in an effective tax rate of 6.5%. The tax benefit consists of $3,741 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 $472 based on the estimated effective tax rate for the full year.