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Goodwill (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2019
USD ($)
Goodwill [Roll Forward]  
Beginning balance $ 0
Ending balance 4,960
American Electric  
Goodwill [Roll Forward]  
Acquisition 646
Diversenergy, LLC  
Goodwill [Roll Forward]  
Acquisition $ 4,314