|**Goodwill (Tables)**                                          | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|-------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|**Goodwill [Abstract]**                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Schedule Of Goodwill                                           | ﻿﻿﻿
				
				Regulated﻿
				
				Segment
				
				Other
				
				Consolidated﻿Balance at December 31, 2015
				
				$
				27,246
				
				$
				6,620
				
				$
				33,866﻿Goodwill acquired
				
				
				8,622
				
				
				-
				
				
				8,622﻿Reclassification to utility plant
					acquisition adjustment
				
				
				(25)
				
				
				-
				
				
				(25)﻿Other
				
				
				(159)
				
				
				-
				
				
				(159)﻿Balance at March 31, 2016
				
				$
				35,684
				
				$
				6,620
				
				$
				42,304
		﻿
|﻿                                                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
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|﻿                                                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|﻿                                                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|﻿Balance at December 31, 2015                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|﻿Goodwill acquired                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|﻿Reclassification to utility plant
					acquisition adjustment |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|﻿Other                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|﻿Balance at March 31, 2016                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

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