Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets- Goodwill (Details)

v3.2.0.727
Goodwill and Intangible Assets- Goodwill (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Goodwill [Roll Forward]    
Balance, December 31, 2014 $ 60,479  
Goodwill acquired during the year 0  
Fair value adjustment (403)  
Currency effects (193)  
Balance, June 30, 2015 59,883  
Accumulated Goodwill Impairment (1,016) $ (1,016)
Operating Segments | U.S. Regions    
Goodwill [Roll Forward]    
Balance, December 31, 2014 24,759  
Goodwill acquired during the year 0  
Fair value adjustment 0  
Currency effects 0  
Balance, June 30, 2015 24,759  
Accumulated Goodwill Impairment 0 0
Operating Segments | U.S. Federal    
Goodwill [Roll Forward]    
Balance, December 31, 2014 3,375  
Goodwill acquired during the year 0  
Fair value adjustment 0  
Currency effects 0  
Balance, June 30, 2015 3,375  
Accumulated Goodwill Impairment 0 0
Operating Segments | Canada    
Goodwill [Roll Forward]    
Balance, December 31, 2014 3,781  
Goodwill acquired during the year 0  
Fair value adjustment 0  
Currency effects (270)  
Balance, June 30, 2015 3,511  
Accumulated Goodwill Impairment (1,016) (1,016)
Operating Segments | Small-Scale Infrastructure    
Goodwill [Roll Forward]    
Balance, December 31, 2014 0  
Goodwill acquired during the year 0  
Fair value adjustment 0  
Currency effects 0  
Balance, June 30, 2015 0  
Accumulated Goodwill Impairment 0 0
Operating Segments | Other    
Goodwill [Roll Forward]    
Balance, December 31, 2014 28,564  
Goodwill acquired during the year 0  
Fair value adjustment (403)  
Currency effects 77  
Balance, June 30, 2015 28,238  
Accumulated Goodwill Impairment $ 0 $ 0