Quarterly report pursuant to Section 13 or 15(d)

Convertible Promissory Note Receivable - Narrative (Details)

v3.10.0.1
Convertible Promissory Note Receivable - Narrative (Details) - USD ($)
$ in Thousands
 9 Months Ended
Mar. 30, 2018
Sep. 01, 2017
Sep. 30, 2018
Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Cancellation fee $ 34,700   $ 34,700  
Convertible promissory note receivable     $ 0 $ 35,471
Convertible promissory note        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Note term   5 years    
Stated interest rate   6.50%    
Convertible promissory note receivable 36,800 $ 36,200    
Unamortized discount   13,800    
Purchase price adjustments   2,500    
Interest receivable 1,900      
Amortization of discount $ 1,221      
Ticketfly | Sold        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Aggregate unadjusted purchase price   200,000    
Cash portion of purchase price   150,000    
Convertible subordinated promissory note   50,000    
Unamortized discount   $ 13,800