Goodwill (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Goodwill [Line Items]
Balance	$ 28,223
Goodwill acquired	1,753
Reclassifications to utility plant acquisition adjustment	(261)
Other	583
Balance	30,298
Regulated Segment [Member]
Goodwill [Line Items]
Balance	24,102
Goodwill acquired
Reclassifications to utility plant acquisition adjustment	(261)
Other	583
Balance	24,424
Other Segment [Member]
Goodwill [Line Items]
Balance	4,121
Goodwill acquired	1,753
Reclassifications to utility plant acquisition adjustment
Other
Balance	$ 5,874