Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share (Details)

v3.8.0.1
Net Loss Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Jul. 27, 2017
Jul. 27, 2016
Mar. 31, 2017
Aug. 31, 2016
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Net (loss) income – basic and diluted         $ (52,968) $ 19,354 $ (222,708) $ (21,218)
Net loss for dilutive EPS         $ (52,968) $ 19,354 $ (222,708) $ (21,218)
Weighted average shares outstanding – basic         89,194,000 82,874,000 86,710,000 79,892,000
Dilutive effect of stock options and warrants (in shares)         0 88,000 0 0
Effect of assumed exercise of liability contracts settleable in stock (in shares)         0 2,119,000 0 0
Weighted average common shares outstanding - diluted (in shares)         89,194,000 85,081,000 86,710,000 79,892,000
Net loss per share - basic (in usd per share)         $ (0.59) $ 0.23 $ (2.57) $ (0.27)
Net loss per share - diluted (in usd per share)         (0.59) $ 0.23 $ (2.57) $ (0.27)
Common Stock | UMG Recordings - share price threshold | Price Per Share Scenario One                
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Shares issued in period (in shares)             500,000  
Common Stock | UMG Recordings - share price threshold | Price Per Share Scenario Two                
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Shares issued in period (in shares)             400,000  
Common Stock | UMG Recordings                
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Shares issued in period (in shares)       1,800,000        
Common Stock | UMG Recordings | Price Per Share Scenario One                
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Shares issued in period (in shares)     500,000 500,000.0        
Share Price (in usd per share)     $ 10.00 $ 10 10.00   $ 10.00  
Common Stock | UMG Recordings | Price Per Share Scenario Two                
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Shares issued in period (in shares)     400,000 400,000.0        
Share Price (in usd per share)     $ 12.00 $ 12 $ 12.00   $ 12.00  
Emerging Markets Communications LLC                
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Deferred compensation to be paid   $ 25,000            
Common stock issued for acquisition (in shares) 5,080,049              
Employee stock options                
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Antidilutive securities excluded from computation of earnings per share (in shares)         5,686,000 6,600,000 6,133,000 6,076,000
Restricted Stock Units                
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Antidilutive securities excluded from computation of earnings per share (in shares)         1,143,000 147,000 1,458,000 253,000
Equity warrants                
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Antidilutive securities excluded from computation of earnings per share (in shares)         0 1,163,000 471,000 1,163,000
Public SPAC Warrants                
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Antidilutive securities excluded from computation of earnings per share (in shares)         6,173,000 6,173,000 6,173,000 6,173,000
2.75% convertible senior notes due 2035                
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Antidilutive securities excluded from computation of earnings per share (in shares)         4,447,000 4,447,000 4,447,000 4,447,000
EMC deferred consideration                
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Antidilutive securities excluded from computation of earnings per share (in shares)         1,439,000 0 3,737,000 503,000
Contingently issuable shares                
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Antidilutive securities excluded from computation of earnings per share (in shares)         900,000 509,000 900,000 171,000
Public SPAC Warrants | Quotes Prices in Active Markets (Level 1)                
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                
Number of warrants (in shares)         6,173,228   6,173,228