Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Goodwill (Details)

v3.19.2
Goodwill and Intangible Assets - Goodwill (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Goodwill [Roll Forward]    
Balance, December 31, 2018 $ 58,332  
Goodwill acquired during the year 406  
Re-measurement adjustment (719)  
Currency effects 110  
Balance, June 30, 2019 58,129  
Accumulated goodwill impairment (1,016) $ (1,016)
U.S. Federal    
Goodwill [Roll Forward]    
Re-measurement adjustment (628)  
Operating Segments | U.S. Regions    
Goodwill [Roll Forward]    
Balance, December 31, 2018 26,370  
Goodwill acquired during the year 406  
Re-measurement adjustment (91)  
Currency effects 0  
Balance, June 30, 2019 26,685  
Accumulated goodwill impairment 0 0
Operating Segments | U.S. Federal    
Goodwill [Roll Forward]    
Balance, December 31, 2018 4,609  
Goodwill acquired during the year 0  
Re-measurement adjustment (628)  
Currency effects 0  
Balance, June 30, 2019 3,981  
Accumulated goodwill impairment 0 0
Operating Segments | Canada    
Goodwill [Roll Forward]    
Balance, December 31, 2018 3,217  
Goodwill acquired during the year 0  
Re-measurement adjustment 0  
Currency effects 132  
Balance, June 30, 2019 3,349  
Accumulated goodwill impairment (1,016) (1,016)
Operating Segments | Non-solar DG    
Goodwill [Roll Forward]    
Balance, December 31, 2018 0  
Goodwill acquired during the year 0  
Re-measurement adjustment 0  
Currency effects 0  
Balance, June 30, 2019 0  
Accumulated goodwill impairment 0 0
Operating Segments | Other    
Goodwill [Roll Forward]    
Balance, December 31, 2018 24,136  
Goodwill acquired during the year 0  
Re-measurement adjustment 0  
Currency effects (22)  
Balance, June 30, 2019 24,114  
Accumulated goodwill impairment $ 0 $ 0