Income Taxes	3 Months Ended
Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	Income Taxes During the three months ended March 31, 2018, the Company recorded a tax provision of $5.8 million, which reflects income tax expense related to the period’s income before income taxes. The effective tax rate for the three months ended March 31, 2018 was 24.3%, which included the new 21% corporate tax rate and tax expense related to the repeal of the section 162(m) performance-based compensation exception, both as a result of the Tax Act, and excess tax benefits from employee share-based payment transactions exercised during the first three months of 2018 per ASU No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (“ASU 2016-09”). The Company is still analyzing certain aspects of the Tax Act and the retroactive reinstatement of expired energy tax credits under the Bipartisan Budget Act of 2018. The final impact is yet to be determined. During the three months ended March 31, 2017, the Company recorded a tax provision of $9.5 million, which reflects income tax expense related to the period’s income before income taxes. The effective tax rate for the three months ended March 31, 2017 was 35.9%, which included the former 35% corporate tax rate and tax expense related to the expected tax benefits for the domestic production activities deduction. The Company had $4.6 million of state NOL carryforwards, net of the federal benefit, at March 31, 2018. Our state NOLs may be carried forward from one to 15 years, depending on the tax jurisdiction, with $1.4 million expiring between 2022 and 2027 and $3.2 million expiring between 2028 and 2032, absent sufficient state taxable income.

Income Taxes

During the three months ended March 31, 2018, the Company recorded a tax provision of $5.8 million, which reflects income tax expense related to the period’s income before income taxes. The effective tax rate for the three months ended March 31, 2018 was 24.3%, which included the new 21% corporate tax rate and tax expense related to the repeal of the section 162(m) performance-based compensation exception, both as a result of the Tax Act, and excess tax benefits from employee share-based payment transactions exercised during the first three months of 2018 per ASU No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (“ASU 2016-09”). The Company is still analyzing certain aspects of the Tax Act and the retroactive reinstatement of expired energy tax credits under the Bipartisan Budget Act of 2018. The final impact is yet to be determined. During the three months ended March 31, 2017, the Company recorded a tax provision of $9.5 million, which reflects income tax expense related to the period’s income before income taxes. The effective tax rate for the three months ended March 31, 2017 was 35.9%, which included the former 35% corporate tax rate and tax expense related to the expected tax benefits for the domestic production activities deduction.

The Company had $4.6 million of state NOL carryforwards, net of the federal benefit, at March 31, 2018. Our state NOLs may be carried forward from one to 15 years, depending on the tax jurisdiction, with $1.4 million expiring between 2022 and 2027 and $3.2 million expiring between 2028 and 2032, absent sufficient state taxable income.