Income Taxes	3 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 5. Income Taxes The Company and its subsidiaries file US federal income tax returns and various state and local income tax returns. The Company does not have tax sharing agreements with the other members within the consolidated ERI group. With few exceptions, the Company is no longer subject to US federal or state and local tax examinations by tax authorities for years before 2013. The Company estimates an annual effective income tax rate based on projected results for the year and applies this rate to income before taxes to calculate income tax expense. Any refinements made due to subsequent information that affects the estimated annual effective income tax rate are reflected as adjustments in the current period. For the three months ended March 31, 2017 and 2016, the difference between the effective rate and the statutory rate is attributed primarily to state and local income taxes less excess tax benefits associated with stock compensation. For income tax purposes the Company amortizes or depreciates certain assets that have been assigned an indefinite life for book purposes. The incremental amortization or depreciation deductions for income tax purposes result in an increase in certain deferred tax liabilities that cannot be used as a source of future taxable income for purposes of measuring the Company's need for a valuation allowance against the net deferred tax assets. Therefore, we expect to record non-cash deferred tax expense as we amortize these assets for tax purposes. For the three months ended March 31, 2017 and 2016, the Company’s tax expense was $0.5 million and $1.8 million, respectively. As of March 31, 2017 and 2016, there were no unrecognized tax benefits and the Company does not expect a significant increase or decrease to the total amounts of unrecognized tax benefits within the next twelve months. The Company was notified by the Internal Revenue Service in October of 2016 that its federal tax return for the year ended December 31, 2014 had been selected for examination. As of March 31, 2017, there have been no proposed adjustments. We believe that our tax positions are appropriate and that an adequate provision has been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company’s tax audits are resolved in a manner not consistent with our expectations, we would be required to adjust our provision for income taxes in the period such resolution occurs. While the Company believes its reported results are materially accurate, any significant adjustments could have a material adverse effect on the Company’s results of operations, cash flows and financial position if not resolved within expectations.

Note 5. Income Taxes

The Company and its subsidiaries file US federal income tax returns and various state and local income tax returns. The Company does not have tax sharing agreements with the other members within the consolidated ERI group. With few exceptions, the Company is no longer subject to US federal or state and local tax examinations by tax authorities for years before 2013.

The Company estimates an annual effective income tax rate based on projected results for the year and applies this rate to income before taxes to calculate income tax expense. Any refinements made due to subsequent information that affects the estimated annual effective income tax rate are reflected as adjustments in the current period.

For the three months ended March 31, 2017 and 2016, the difference between the effective rate and the statutory rate is attributed primarily to state and local income taxes less excess tax benefits associated with stock compensation.

For income tax purposes the Company amortizes or depreciates certain assets that have been assigned an indefinite life for book purposes. The incremental amortization or depreciation deductions for income tax purposes result in an increase in certain deferred tax liabilities that cannot be used as a source of future taxable income for purposes of measuring the Company's need for a valuation allowance against the net deferred tax assets. Therefore, we expect to record non-cash deferred tax expense as we amortize these assets for tax purposes.

For the three months ended March 31, 2017 and 2016, the Company’s tax expense was $0.5 million and $1.8 million, respectively. As of March 31, 2017 and 2016, there were no unrecognized tax benefits and the Company does not expect a significant increase or decrease to the total amounts of unrecognized tax benefits within the next twelve months.

The Company was notified by the Internal Revenue Service in October of 2016 that its federal tax return for the year ended December 31, 2014 had been selected for examination. As of March 31, 2017, there have been no proposed adjustments. We believe that our tax positions are appropriate and that an adequate provision has been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company’s tax audits are resolved in a manner not consistent with our expectations, we would be required to adjust our provision for income taxes in the period such resolution occurs. While the Company believes its reported results are materially accurate, any significant adjustments could have a material adverse effect on the Company’s results of operations, cash flows and financial position if not resolved within expectations.