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Acquisitions Recognized Identifiable Assets Acquired and Liabilities Assumed (Details) - USD ($)
Sep. 30, 2015
Jul. 31, 2015
Jul. 08, 2015
Dec. 31, 2014
Business Acquisition [Line Items]        
Goodwill $ 18,385,000     $ 0
CenStar        
Business Acquisition [Line Items]        
Cash     $ 371,000  
Net working capital, net of cash acquired     10,094,000  
Property and equipment     52,000  
Goodwill     6,497,000  
Fair value of derivative liabilities     (3,475,000)  
Total     19,234,000  
CenStar | Customer Relationships        
Business Acquisition [Line Items]        
Intangible assets     5,044,000  
CenStar | Trademarks        
Business Acquisition [Line Items]        
Intangible assets     $ 651,000  
Oasis Power Holdings        
Business Acquisition [Line Items]        
Cash   $ 271,000    
Net working capital, net of cash acquired   2,056,000    
Property and equipment   38,000    
Goodwill   11,889,000    
Fair value of derivative liabilities   (819,000)    
Total   22,000,000    
Oasis Power Holdings | Customer Relationships        
Business Acquisition [Line Items]        
Intangible assets   7,963,000    
Oasis Power Holdings | Trademarks        
Business Acquisition [Line Items]        
Intangible assets   $ 602,000