Annual report pursuant to Section 13 and 15(d)

Dispositions - Schedule of carrying amounts of major classes of assets and liabilities and loss before income taxes (Details)

v3.8.0.1
Dispositions - Schedule of carrying amounts of major classes of assets and liabilities and loss before income taxes (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Loss before benefit from (provision for) income taxes $ 519,185 $ 343,206 $ 171,211
Ticketfly | Sold      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Loss before benefit from (provision for) income taxes $ 149,803 $ 37,904 $ 7,223