| **Assets Held For Sale**            | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
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| **Assets Held For Sale [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| Assets Held For Sale                | Note 5 –  Assets Held for Sale

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In the fourth quarter of 2018, the Company decided to market for sale a water system in Virginia that serves approximately 500 customers.  This water system is reported as assets held for sale in the Company’s consolidated balance sheet, and in April 2019, the Company completed the sale for proceeds of $1,882.

﻿

In the first quarter of 2017, the Company decided to market for sale a water system in Texas that serves approximately 265 customers.  This water system is reported as assets held for sale in the Company’s consolidated balance sheet, and the sale is expected to close in the second quarter of 2019.     

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| - References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
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| - Definition
The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.
+ References
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823
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