Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Narrative (Details)

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Goodwill and Intangible Assets - Narrative (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Goodwill [Line Items]          
Goodwill impairment   $ 131,997 $ 0 $ 131,997 $ 0
Amortization expense of intangible assets   4,100 $ 5,100 9,300 $ 10,300
Held for sale | Ticketfly          
Goodwill [Line Items]          
Goodwill impairment   131,700   131,700  
Fair value of net assets $ 184,500 184,500   184,500  
Aggregate purchase price 200,000        
Estimated purchase price adjustments 10,900 10,900   10,900  
Costs to sell $ 4,600 4,600   $ 4,600  
Held for sale | KXMZ          
Goodwill [Line Items]          
Goodwill impairment   $ 300