Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation Expense Recognized (Detail)

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Stock-Based Compensation Expense Recognized (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total stock-based compensation expense, pre-tax $ 603 $ 820
Tax provision for stock-based compensation expense (241) (328)
Total stock-based compensation expense, net of tax 362 492
Corporate
    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Stock option expense 405 78
Restricted stock expenses    481
Broadcast
    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Stock option expense 125 169
Internet
    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Stock option expense 58 74
Publishing
    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Stock option expense $ 15 $ 18