Quarterly report pursuant to Section 13 or 15(d)

Goodwill (Details)

v3.8.0.1
Goodwill (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 29, 2017
Jul. 27, 2016
Jun. 30, 2017
Sep. 30, 2017
Mar. 31, 2017
Sep. 30, 2016
Mar. 31, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Goodwill [Roll Forward]                    
Gross beginning balance         $ 391,836     $ 391,836    
Accumulated impairment loss beginning balance         (64,000)     (64,000)    
Beginning balance         327,836     327,836    
Impairment loss       $ 0   $ 0   (78,000) $ 0  
Settlement received related to acquisition               (1,250)    
Foreign currency translation adjustments               107    
Gross ending balance       390,693       390,693   $ 391,836
Accumulated impairment loss ending balance       (142,000)       (142,000)   (64,000)
Ending balance       248,693       248,693   327,836
Working capital settlement adjustment         (15,483)   $ 0      
Aviation Connectivity                    
Goodwill [Roll Forward]                    
Gross beginning balance         98,037     98,037    
Accumulated impairment loss beginning balance         0     0    
Beginning balance         98,037     98,037    
Impairment loss               0    
Settlement received related to acquisition               0    
Foreign currency translation adjustments               0    
Gross ending balance       98,037       98,037   98,037
Accumulated impairment loss ending balance       0       0   0
Ending balance       98,037       98,037   98,037
Maritime & Land Connectivity                    
Goodwill [Roll Forward]                    
Gross beginning balance         210,380     210,380    
Accumulated impairment loss beginning balance         (64,000)     (64,000)    
Beginning balance         146,380     146,380    
Impairment loss         (78,000)     (78,000)   (64,000)
Settlement received related to acquisition               (1,250)    
Foreign currency translation adjustments               0    
Gross ending balance       209,130       209,130   210,380
Accumulated impairment loss ending balance       (142,000)       (142,000)   (64,000)
Ending balance       67,130       67,130   146,380
Media & Content                    
Goodwill [Roll Forward]                    
Gross beginning balance         83,419     83,419    
Accumulated impairment loss beginning balance         0     0    
Beginning balance         $ 83,419     83,419    
Impairment loss               0    
Settlement received related to acquisition               0    
Foreign currency translation adjustments               107    
Gross ending balance       83,526       83,526   83,419
Accumulated impairment loss ending balance       0       0   0
Ending balance       $ 83,526       $ 83,526   $ 83,419
Emerging Markets Communications LLC                    
Goodwill [Roll Forward]                    
Ending balance   $ 298,847                
Working capital settlement adjustment $ (1,300) $ (1,250) $ (1,300)