Annual report pursuant to Section 13 and 15(d)

Business Combinations - Narrative (Details)

v3.8.0.1
Business Combinations - Narrative (Details)
$ in Thousands
1 Months Ended 3 Months Ended 5 Months Ended 12 Months Ended
Jul. 27, 2016
USD ($)
shares
Aug. 04, 2015
USD ($)
Jul. 01, 2015
USD ($)
lease
Aug. 02, 2014
USD ($)
Aug. 31, 2015
USD ($)
Sep. 30, 2016
USD ($)
Jun. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
acquisition
Dec. 31, 2014
USD ($)
Dec. 31, 2013
Business Acquisition [Line Items]                              
Preferred stock redeemed (in shares)                       $ 40,607 $ 0 $ 0  
Equity method investment, ownership percentage                             22.00%
Number of acquisitions | acquisition                         4    
Deferred consideration for EMC Acquisition                 $ 0 $ 25,000   25,000 $ 0    
Goodwill                 93,796 327,836 $ 53,014 327,836 93,796 $ 53,014  
Business acquisition, earn out obligation accrual                 9,652 1,987   $ 1,987 9,652    
Finite lived intangible asset, weighted average useful life                       14 years 11 months      
Wireless Maritime Services                              
Business Acquisition [Line Items]                              
Equity method investment, ownership percentage 49.00%                            
Emerging Markets Communications LLC                              
Business Acquisition [Line Items]                              
Consideration transferred, fair value $ 166,289                     $ 166,289      
Business acquisition, cash payment 100,454                            
Deferred consideration 25,000                            
Settlement of pre-existing relationship 228                            
Transaction and integration expenses           $ 12,700 $ 1,900 $ 800 $ 1,800     15,400      
Business acquired, revenues contributed by acquiree since acquisition date                   73,200          
Business combination, pro forma information, earnings or loss of acquiree since acquisition date, actual                   94,800          
Goodwill expected to be tax deductible $ 74,900                            
Goodwill                   298,847   298,847      
Property, plant and equipment                   82,220   82,220      
Finite lived intangible asset, weighted average useful life 5 years 11 months                            
Emerging Markets Communications LLC | Common Stock                              
Business Acquisition [Line Items]                              
Business acquisition, shares issued | shares 5,466,886                            
WOI Stock Purchase                              
Business Acquisition [Line Items]                              
Business acquisition, cash payment     $ 38,300                        
Transaction and integration expenses     500                        
Business acquired, revenues contributed by acquiree since acquisition date                         5,900    
Deferred consideration for EMC Acquisition     3,100                        
Goodwill     19,600                        
Business acquisition, accounts receivable     4,100                        
Business combination, deferred tax liabilities, net     (9,100)                        
Property, plant and equipment     $ 1,800                        
Number of leases acquired | lease     2                        
Business acquisition, short-term deferred tax assets     $ 200                        
Business acquisition, payments of earn-out liabilities                       2,500      
Business acquisition, deferred tax liabilities     9,300                        
Business acquisition, earn out obligation accrual     5,000             900   900      
RMG                              
Business Acquisition [Line Items]                              
Business acquisition, cash payment     1,400                        
Transaction and integration expenses     200                        
Business acquired, revenues contributed by acquiree since acquisition date                         4,600    
Goodwill     1,400                        
Business acquisition, accounts receivable     2,200                        
Business combination, revenue share liabilities     (3,100)                        
Business combination, provision for losses on specific loss contract     $ (1,300)                        
NavAero, Inc.                              
Business Acquisition [Line Items]                              
Business acquisition, cash payment   $ 4,800                          
Transaction and integration expenses   300                          
Business acquired, revenues contributed by acquiree since acquisition date                         2,400    
Deferred consideration for EMC Acquisition   300                          
Goodwill   3,200                          
Business combination, deferred tax liabilities, net   (500)                          
Business acquisition, short-term deferred tax assets   100                          
Business acquisition, deferred tax liabilities   600                          
Business acquisition, earn out obligation accrual   1,000               200   200      
MasFlight                              
Business Acquisition [Line Items]                              
Business acquisition, cash payment   10,300     $ 10,300                    
Transaction and integration expenses   300                          
Business acquired, revenues contributed by acquiree since acquisition date                         $ 1,000    
Deferred consideration for EMC Acquisition   9,300               200   200      
Goodwill   16,100                          
Business combination, deferred tax liabilities, net   (1,400)                          
Business acquisition, short-term deferred tax assets   300                          
Business acquisition, payments of earn-out liabilities                       1,700      
Business acquisition, deferred tax liabilities   1,700                          
Business acquisition, earn out obligation accrual   $ 20,000               $ 900   $ 900      
Purple Inflight Entertainment                              
Business Acquisition [Line Items]                              
Business acquisition, cash payment       $ 500                      
Deferred consideration for EMC Acquisition       100                      
Goodwill       $ 400                      
Business acquisition, additional cash payment                     $ 200        
Probability of renewal of supplier contract       70.00%                      
Finite-lived intangible assets acquired       $ 200                      
Finite lived intangible asset, weighted average useful life       1 year                      
Business acquisition, other net liabilities       $ 100