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 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Total stock-based compensation expense, pre-tax $ 344 $ 358 $ 1,276 $ 1,529
Tax provision for stock-based compensation expense (137) (143) (510) (611)
Total stock-based compensation expense, net of tax 207 215 766 918
Corporate
        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Stock option expense 223 243 843 555
Restricted stock expenses       481
Broadcast
        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Stock option expense 64 43 253 260
Internet
        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Stock option expense 40 62 134 195
Publishing
        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Stock option expense $ 17 $ 10 $ 46 $ 38