Income Taxes	9 Months Ended
Sep. 30, 2018
Income Taxes [Abstract]
Income Taxes	15. Income Taxes Our effective income tax rate for the nine months ended September 30, 2018 and 2017 was 19.9% and (52.7)%, respectively. The effective tax rate for 2018 was favorably impacted by the lower statutory rate from the enactment of the Tax Cuts and Jobs Act on December 22, 2017. The rate for 2017 varied from the statutory tax rate primarily due to a correction of an immaterial error in prior years’ deferred tax on bond premium amortization, partially offset by the amount of tax exempt income in relation to total pre-tax income.

Income Taxes

9 Months Ended

Sep. 30, 2018

15. Income Taxes

Our effective income tax rate for the nine months ended September 30, 2018 and 2017 was 19.9% and (52.7)%, respectively. The effective tax rate for 2018 was favorably impacted by the lower statutory rate from the enactment of the Tax Cuts and Jobs Act on December 22, 2017. The rate for 2017 varied from the statutory tax rate primarily due to a correction of an immaterial error in prior years’ deferred tax on bond premium amortization, partially offset by the amount of tax exempt income in relation to total pre-tax income.