Income Taxes	3 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income tax expense for the quarter ended March 31, 2017 was $2,854, for an effective tax rate for the quarter of 24.7 percent. The effective tax rate differs from the 35 percent federal statutory rate on pretax income, primarily due to the impact of income tax benefits related to share-based compensation as accounted for in ASU 2016-09, Compensation - Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting, which was adopted by the Company during the quarter ended September 30, 2016, the domestic production activities deduction, and state taxes, including state income tax credits in Indiana and Kansas. Income tax expense for the quarter ended March 31, 2016, was $3,872, for an effective tax rate of 35.4 percent. The principal reason for the reduction in effective tax rate of 10.7 percentage points in the quarter ended March 31, 2017, is the impact of ASU 2016-09, which required the February 2017 share-based compensation release event to be treated as a discrete item. As of March 31, 2017, the Company had a remaining valuation allowance of $726, largely related to capital loss carryforwards that, in our estimate, are not more likely than not to be realized prior to their respective carryforward periods. The Company continues to evaluate all available positive and negative evidence to determine the likelihood of realization of the deferred tax assets.

Income Taxes

3 Months Ended

Mar. 31, 2017

Income tax expense for the quarter ended March 31, 2017 was $2,854, for an effective tax rate for the quarter of 24.7 percent. The effective tax rate differs from the 35 percent federal statutory rate on pretax income, primarily due to the impact of income tax benefits related to share-based compensation as accounted for in ASU 2016-09, Compensation - Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting, which was adopted by the Company during the quarter ended September 30, 2016, the domestic production activities deduction, and state taxes, including state income tax credits in Indiana and Kansas.

Income tax expense for the quarter ended March 31, 2016, was $3,872, for an effective tax rate of 35.4 percent. The principal reason for the reduction in effective tax rate of 10.7 percentage points in the quarter ended March 31, 2017, is the impact of ASU 2016-09, which required the February 2017 share-based compensation release event to be treated as a discrete item.

As of March 31, 2017, the Company had a remaining valuation allowance of $726, largely related to capital loss carryforwards that, in our estimate, are not more likely than not to be realized prior to their respective carryforward periods. The Company continues to evaluate all available positive and negative evidence to determine the likelihood of realization of the deferred tax assets.