Annual report pursuant to Section 13 and 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 12 Months Ended
Jul. 27, 2016
Mar. 31, 2017
Aug. 31, 2016
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Sep. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                              
Net loss       $ (134,405) $ (52,968) $ (44,130) $ (125,611) $ (91,714) $ 19,354 $ (38,160) $ (2,412)   $ (357,114) $ (112,932) $ (2,126)
Less: adjustment for change in fair value on warrants liability for diluted EPS after assumed exercise of warrants liability                         0 0 11,938
Net loss for dilutive EPS                         $ (357,114) $ (112,932) $ (14,064)
Weighted average common shares outstanding - basic (in shares)       89,222,000 89,194,000 85,496,000 85,440,000 85,369,000 82,874,000 78,127,000 78,643,000   87,733,000 81,269,000 77,558,000
Dilutive effect of stock options and warrants (in shares)                         0 0 836,000
Weighted average common shares outstanding - diluted (in shares)       89,222,000 89,194,000 85,496,000 85,440,000 85,369,000 85,081,000 78,127,000 78,643,000   87,733,000 81,269,000 78,394,000
Net loss per share - basic (in usd per share)       $ (1.51) $ (0.59) $ (0.52) $ (1.47) $ (1.07) $ 0.23 $ (0.49) $ (0.03)   $ (4.07) $ (1.39) $ (0.03)
Net loss per share - diluted (in usd per share)       (1.51) (0.59) $ (0.52) (1.47) $ (1.07) $ 0.23 $ (0.49) $ (0.03)   (4.07) $ (1.39) $ (0.18)
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 10.00   10.00         $ 10.00 10    
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 $ 12.00   $ 12.00         $ 12.00 $ 12    
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                            
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 net income (loss) per share (in shares)                         6,061,000 6,203,000 3,200,000
Restricted stock units (including performance 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 net income (loss) per share (in shares)                         1,364,000 306,000 44,000
Non-employees 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 net income (loss) per share (in shares)                         0 0 1,000
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 net income (loss) per share (in shares)                         353,000 1,165,000 430,000
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 net income (loss) per share (in shares)                         6,173,000 6,173,000 0
Convertible notes                              
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                              
Antidilutive securities excluded from computation of net income (loss) per share (in shares)                         4,447,000 4,447,000 3,850,000
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 net income (loss) per share (in shares)                         2,795,000 1,428,000 0
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 net income (loss) per share (in shares)                         900,000 354,000 0
Public SPAC Warrants | Level 1                              
Schedule of Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]                              
Warrants (in shares)         6,173,228             6,173,228