|**Goodwill (Tables)**                                    | 3 Months Ended                                                                                                                                                                                                                                                            
|-------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|**Goodwill [Abstract]**                                  |                                                                                                                                                                                                                                                                           
|Schedule Of Goodwill                                     | Regulated WaterRegulated Natural GasOtherConsolidatedBalance at December 31, 2019$58,981$-$4,841$63,822Goodwill acquired1182,287,677-2,287,795Reclassification to utility plant acquisition adjustment(91)--(91)Balance at March 31, 2020$59,008$2,287,677$4,841$2,351,526
|                                                         |                                                                                                                                                                                                                                                                           
|                                                         |                                                                                                                                                                                                                                                                           
|                                                         |                                                                                                                                                                                                                                                                           
|Balance at December 31, 2019                             |                                                                                                                                                                                                                                                                           
|Goodwill acquired                                        |                                                                                                                                                                                                                                                                           
|Reclassification to utility plant acquisition adjustment |                                                                                                                                                                                                                                                                           
|Balance at March 31, 2020                                |                                                                                                                                                                                                                                                                           

X- ReferencesNo definition available.
+ Details**Name:**
us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract**Namespace Prefix:**
us-gaap_**Data Type:**
xbrli:stringItemType**Balance Type:**
na**Period Type:**
duration X- DefinitionTabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.
+ ReferencesReference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267
+ Details**Name:**
us-gaap_ScheduleOfGoodwillTextBlock**Namespace Prefix:**
us-gaap_**Data Type:**
nonnum:textBlockItemType**Balance Type:**
na**Period Type:**
duration