| **Recent Accounting Pronouncements**            | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       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| **Recent Accounting Pronouncements [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     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| Recent Accounting Pronouncements                | Note 15 – Recent Accounting Pronouncements   

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In March 2017, the FASB issued updated accounting guidance on the presentation of net periodic pension and postretirement benefit cost (net benefit cost).  Historically, net benefit cost is reported as an employee cost within operating income, net of amounts capitalized.  The guidance requires the bifurcation of net benefit cost.  The service cost component will be presented with other employee compensation costs in operating income and the other components of net benefit cost will be reported separately outside of operating income, and will not be eligible for capitalization.  The guidance is effective for annual reporting periods beginning after December 15, 2017, and interim periods within that reporting period.  The Company is evaluating the requirements of the updated guidance to determine the impact of adoption. 

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In January 2017, the FASB issued updated accounting guidance that eliminates step 2 of the current goodwill impairment test, which requires a hypothetical purchase price allocation to measure goodwill impairment.  A goodwill impairment loss will instead be measured at the amount by which a reporting unit’s carrying amount exceeds its fair value, not to exceed the carrying amount of goodwill.  The guidance will be effective for annual reporting periods beginning after December 15, 2019, and interim periods within that reporting period, with early adoption permitted for any impairment test performed on testing dates after January 1, 2017.  The Company has elected to early adopt the provisions of the updated guidance, for its annual impairment valuation to be performed in the third quarter of 2017, and does not expect the provisions of the updated guidance to have an impact on its results of operations or financial position.   

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In August 2016, the FASB issued updated accounting guidance on the classification of certain cash receipts and cash payments in the statement of cash flows, which is intended to reduce diversity in practice in how certain transactions are classified in the statement of cash flows.  This guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017, and early adoption is permitted.  The Company is currently evaluating the impact of this new standard on its consolidated cash flow statement, but does not expect there to be a significant impact.  

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In March 2016, the FASB issued updated accounting guidance on simplifying the accounting for share-based payments, which includes several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows.   The updated guidance was effective for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years, with early adoption available.  On January 1, 2017, the Company adopted the updated guidance, prospectively, and recognized a previously unrecognized windfall tax benefit for stock-based compensation of $982  associated with the Company’s 2012 Federal net operating loss, which was recorded as an adjustment to deferred income taxes and retained earnings (refer to the presentation of “cumulative effect of change in accounting principle - windfall tax benefit” on our Consolidated Statement of Equity).  Additionally, income tax benefits in excess of compensation costs or tax deficiencies for share-based compensation are now recorded to our income tax provision, instead of historically to stockholder’s equity, which impacts our effective tax rate.  Lastly, all tax-related cash flows resulting from share-based payments are reported prospectively as operating activities on the statement of cash flows, a change from the historical requirement to present tax benefits as an inflow from financing activities and an outflow from operating activities. 

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In February 2016, the FASB issued updated accounting guidance on accounting for leases, which requires lessees to establish a right-of-use asset and a lease liability on the balance sheet for all leases with terms longer than 12 months.  For income statement purposes, leases will be classified as either operating or finance.  Operating leases will result in straight-line expense while finance leases will result in a front-loaded expense pattern.  The updated accounting guidance is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, with early adoption available.  The Company is evaluating the requirements of the updated guidance to determine the impact of adoption.

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In January 2016, the FASB issued updated accounting guidance on the recognition and measurement of financial assets and financial liabilities, which amends certain aspects of recognition, measurement, presentation, and disclosure of financial instruments, including the requirement to measure certain equity investments at fair value with changes in fair value recognized in net income.  The updated guidance is effective for interim and annual periods beginning after December 31, 2017.  The Company does not expect the provisions of the updated guidance to have a material impact on its results of operations or financial position.   

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In May 2014, the FASB issued updated accounting guidance on recognizing revenue from contracts with customers, which outlines a single comprehensive model that an entity will apply to determine the measurement of revenue and timing of recognition.  The underlying principle is that an entity will recognize revenue to depict the transfer of goods or services to customers at an amount that the entity expects to be entitled to in exchange for those goods or services.  The updated guidance also requires additional disclosure about the nature, amount, timing, and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to fulfill a contract.  Additionally, the accounting for contributions in aid of construction may be impacted by the updated accounting guidance if the contributions are determined to be in scope.  In July 2015, the FASB approved a one year deferral to the original effective date of this guidance.  The updated guidance is effective for annual periods beginning after December 15, 2017, and interim periods therein, using either of the following transition methods: (i) a full retrospective approach reflecting the application of the updated guidance in each prior reporting period, or (ii) a modified retrospective approach with the cumulative effect of initially adopting the updated guidance recognized through retained earnings at the date of adoption.  In 2016, the Company performed an evaluation of the requirements of the updated guidance and based on current interpretations of the updated guidance believes that the impact of adoption may not result in a material change in our measurement of revenue and timing of recognition if contributions in aid of construction are determined to not be in scope.  In 2017, the American Institute of Certified Public Accountants (AICPA) power and utility entities revenue recognition task force has determined that contributions in aid of construction are not in the scope of the new standard, and submitted its determination to the AICPA’s revenue recognition working group for approval.  We plan to implement the updated guidance using the modified retrospective approach on January 1, 2018.

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| - Definition
Tabular disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.
+ References
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