Annual report pursuant to Section 13 and 15(d)

Stock Incentive Plan - Schedule of Stock-Based Compensation Expense Recognized (Detail)

v3.19.1
Stock Incentive Plan - Schedule of Stock-Based Compensation Expense Recognized (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Total stock-based compensation expense, pre-tax $ 543 $ 1,721
Tax expense from stock-based compensation expense (141) (688)
Total stock-based compensation expense, net of tax 402 1,033
Unallocated Corporate [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Stock option compensation expense 329 153
Restricted stock shares compensation expenses   1,100
Broadcast [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Stock option compensation expense 122 33
Restricted stock shares compensation expenses   224
Digital Media [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Stock option compensation expense 77 30
Restricted stock shares compensation expenses   124
Publishing [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Stock option compensation expense $ 15 21
Restricted stock shares compensation expenses   $ 36