Income Taxes	9 Months Ended
Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 9. Income Taxes The effective tax rate may differ from the statutory federal tax rate primarily due to permanent differences for tax exempt interest income. Income tax amounts are estimates based on our initial analysis and interpretation of the Tax Cuts and Jobs Act ("TCJA") enacted in 2017. In the third quarter of 2018, the Internal Revenue Service issued guidance that clarifies the tax treatment for the TCJA items for which our accounting was incomplete. We are in the process of refining our analysis and determining the impact on our deferred tax assets and liabilities.

Income Taxes

9 Months Ended

Sep. 30, 2018

Note 9. Income Taxes

The effective tax rate may differ from the statutory federal tax rate primarily due to permanent differences for tax exempt interest income.

Income tax amounts are estimates based on our initial analysis and interpretation of the Tax Cuts and Jobs Act ("TCJA") enacted in 2017. In the third quarter of 2018, the Internal Revenue Service issued guidance that clarifies the tax treatment for the TCJA items for which our accounting was incomplete. We are in the process of refining our analysis and determining the impact on our deferred tax assets and liabilities.