Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Contingencies (Details)

v3.19.1
Commitments and Contingencies - Contingencies (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Mar. 31, 2017
Aug. 31, 2016
Aug. 31, 2014
Mar. 31, 2019
Mar. 31, 2018
Loss Contingencies [Line Items]          
Provision for legal settlements       $ 508 $ 516
Settled litigation | UMG Recordings          
Loss Contingencies [Line Items]          
Paid to American in settlement of lawsuit $ 5,000 $ 18,000      
Stock issued for legal settlements (in shares)   1,800,000      
Pending Litigation | BMG          
Loss Contingencies [Line Items]          
Loss contingency       $ 1,000  
Pending Litigation | SwiftAir, LLC          
Loss Contingencies [Line Items]          
Damages sought     $ 9,000    
Price Per Share Scenario One | Common Stock | UMG Recordings          
Loss Contingencies [Line Items]          
Stock issued during period, litigation (in shares) 500,000        
Share price (in usd per share) $ 10.00        
Price Per Share Scenario Two | Common Stock | UMG Recordings          
Loss Contingencies [Line Items]          
Stock issued during period, litigation (in shares) 400,000        
Share price (in usd per share) $ 12.00