Fair Value Measurements (Financial Assets and Liabilities and Non-Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Detail) - Fair Value, Measurements, Recurring - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Financial assets:   $ 17,339
Financial liabilities: $ (181) (181)
Pulser Media    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Financial assets: [1]   17,339
Significant Unobservable Inputs (Level 3)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Financial assets:   17,339
Financial liabilities: (181) (181)
Significant Unobservable Inputs (Level 3) | Pulser Media    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Financial assets: 0 17,339 [1]
Contingent Consideration    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Contingent consideration [2] (181) (181)
Contingent Consideration | Significant Unobservable Inputs (Level 3)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Contingent consideration [2] (181) (181)
Financial liabilities: $ (181) $ (181)
[1] The fair value of the equity interest in Pulser Media, Inc. (the parent company of Rdio) ("Pulser") was determined using inputs that are supported by little or no market activity (a Level 3 measurement). Due to the volatility in market conditions that have an impact on Pulser's operations, during the year ended December 31, 2015, the Company recognized an impairment charge of $19.4 million related to the decline in the fair value of the equity interest in Pulser. There were no similar charges in 2014.
[2] Contingent consideration represents the fair value of the additional cash consideration potentially payable as part of the Wise Brothers Acquisition and the Company's 2013 asset exchange with Family Stations, Inc. (the "WFME Asset Exchange"). The fair value of the contingent consideration was determined using inputs that are supported by little or no market activity (a Level 3 measurement).