Annual report pursuant to Section 13 and 15(d)

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

v3.20.1
Stock Incentive Plan - Schedule of Stock-Based Compensation Expense Recognized (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Total stock-based compensation expense, pre-tax $ 1,460 $ 543
Tax expense from stock-based compensation expense (380) (141)
Total stock-based compensation expense, net of tax 1,080 402
Unallocated Corporate [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Stock option compensation expense 271 329
Restricted stock shares compensation expenses 623  
Broadcast [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Stock option compensation expense 111 122
Restricted stock shares compensation expenses 383  
Digital Media [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Stock option compensation expense 71 77
Publishing [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Stock option compensation expense $ 1 $ 15