Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Summary of Gross Carrying Amounts and Accumulated Amortization of Intangible Assets (Details)

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Goodwill and Intangible Assets - Summary of Gross Carrying Amounts and Accumulated Amortization of Intangible Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Finite-lived intangible assets    
Gross Carrying Amount $ 115,266 $ 115,266
Accumulated Amortization (34,292) (25,034)
Intangible Assets Held for Sale, Finite lived (57,739)  
Net Carrying Value 23,235 90,232
Total intangible assets, Gross Carrying Amount 115,459 115,459
Total intangible assets, Accumulated Amortization (34,292) (25,034)
Intangible Assets Held for Sale (57,932)  
Total intangible assets 23,235 90,425
FCC license - Broadcast Radio    
Indefinite-lived intangible assets    
Net Carrying Value 193 193
Intangible Assets Held for Sale, Indefinite-lived (193)  
Patents    
Finite-lived intangible assets    
Gross Carrying Amount 8,030 8,030
Accumulated Amortization (2,923) (2,556)
Intangible Assets Held for Sale, Finite lived 0  
Net Carrying Value 5,107 5,474
Total intangible assets, Accumulated Amortization (2,923) (2,556)
Developed technology    
Finite-lived intangible assets    
Gross Carrying Amount 56,162 56,162
Accumulated Amortization (19,293) (13,599)
Intangible Assets Held for Sale, Finite lived (19,235)  
Net Carrying Value 17,634 42,563
Total intangible assets, Accumulated Amortization (19,293) (13,599)
Customer relationships—clients    
Finite-lived intangible assets    
Gross Carrying Amount 37,399 37,399
Accumulated Amortization (7,449) (5,487)
Intangible Assets Held for Sale, Finite lived (29,950)  
Net Carrying Value 0 31,912
Total intangible assets, Accumulated Amortization (7,449) (5,487)
Customer relationships—users    
Finite-lived intangible assets    
Gross Carrying Amount 1,940 1,940
Accumulated Amortization (1,732) (1,288)
Intangible Assets Held for Sale, Finite lived (208)  
Net Carrying Value 0 652
Total intangible assets, Accumulated Amortization (1,732) (1,288)
Trade names    
Finite-lived intangible assets    
Gross Carrying Amount 11,735 11,735
Accumulated Amortization (2,895) (2,104)
Intangible Assets Held for Sale, Finite lived (8,346)  
Net Carrying Value 494 9,631
Total intangible assets, Accumulated Amortization $ (2,895) $ (2,104)