Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Summary of Significant Accounting Policies - Fair Value Measurements, Recurring and Nonrecurring (Details) (Details)

v3.8.0.1
Basis of Presentation and Summary of Significant Accounting Policies - Fair Value Measurements, Recurring and Nonrecurring (Details) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 9 Months Ended
Mar. 31, 2017
Aug. 31, 2016
Sep. 30, 2017
Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Earn-out liability     $ 284 $ 1,987
Contingently issuable shares     2,196 4,545
Total financial liabilities     2,591 6,965
Public SPAC Warrants        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Public SPAC warrants     111 433
Quotes Prices in Active Markets (Level 1)        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Earn-out liability     0 0
Contingently issuable shares     0 0
Total financial liabilities     $ 0 0
Quotes Prices in Active Markets (Level 1) | Public SPAC Warrants        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Number of warrants (in shares)     6,173,228  
Quotes Prices in Active Markets (Level 1) | Global Eagle Warrants | Public Warrants        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Number of warrants (in shares)     6,173,228  
Quotes Prices in Active Markets (Level 1) | Public SPAC Warrants        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Public SPAC warrants     $ 0 0
Significant Other Observable Inputs (Level 2)        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Earn-out liability     0 0
Contingently issuable shares     0 0
Total financial liabilities     0 0
Significant Other Observable Inputs (Level 2) | Public SPAC Warrants        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Public SPAC warrants     0 0
Significant Other Unobservable Inputs (Level 3)        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Earn-out liability     284 1,987
Contingently issuable shares     2,196 4,545
Total financial liabilities     2,591 6,965
Significant Other Unobservable Inputs (Level 3) | Public SPAC Warrants        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Public SPAC warrants     $ 111 $ 433
UMG Recordings - share price threshold | Common Stock | Price Per Share Scenario One        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Stock issued during period, litigation (in shares)     500,000  
UMG Recordings - share price threshold | Common Stock | Price Per Share Scenario Two        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Stock issued during period, litigation (in shares)     400,000  
UMG Recordings | Common Stock        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Stock issued during period, litigation (in shares)   1,800,000    
UMG Recordings | Common Stock | Price Per Share Scenario One        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Stock issued during period, litigation (in shares) 500,000 500,000.0    
Share price of common stock (in usd per share) $ 10.00 $ 10 $ 10.00  
UMG Recordings | Common Stock | Price Per Share Scenario Two        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Stock issued during period, litigation (in shares) 400,000 400,000.0    
Share price of common stock (in usd per share) $ 12.00 $ 12 $ 12.00