Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.19.1
Summary of Significant Accounting Policies - Additional Information (Detail)
 12 Months Ended
May 19, 2017
USD ($)
Dec. 31, 2018
USD ($)
Markets
shares
Dec. 31, 2017
USD ($)
shares
Jan. 03, 2017
USD ($)
Summary Of Significant Accounting Policies [Line Items]        
Interest Costs Capitalized   $ 100,000 $ 200,000  
Capitalized computer software, additions   2,100,000 3,700,000  
Capitalized computer software, amortization   2,800,000 $ 2,800,000  
Impairment of intangible assets, finite-lived   0    
Carrying value of notes   $ 238,600,000    
Debt instrument, interest rate, stated percentage   4.58%    
Debt related commitment fees and debt issuance costs   $ 6,300,000    
Debt issuance costs, gross   $ 700,000    
Effective income tax rate reconciliation, at federal statutory income tax rate, percent   21.00% 35.00%  
Business combination recognized identifiable assets increase or decrease   $ 200,000 $ 100,000  
Increase (Decrease) in contingent earn-out liabilities   76,000 (23,000)  
Self-insurance reserve   828,000 747,000 $ 783,000
Debt instrument, estimated fair value   218,300,000    
Prepaid commission expense   $ 700,000    
Number of market locations | Markets   35    
Operating leases, rent expenses   $ 15,400,000 15,500,000  
Deferred rental revenue   4,100,000 4,300,000  
Discontinued operation, gain (loss) from disposal of discontinued operation, before income tax   $ (4,700,000) $ 3,900,000  
Option to purchase shares of common stock outstanding | shares   1,980,972 1,428,462  
Antidilutive securities excluded from computation of earnings per share, amount | shares   1,672,217 814,556  
Percentage of total revenue   36.40% 36.80%  
Asset-Based Revolving Credit Facility [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Carrying value of notes $ 30,000,000      
Debt related commitment fees and debt issuance costs   $ 6,300,000    
Debt instrument, interest rate, increase (decrease) 2.00%      
Debt instrument term   5 years    
Senior Secured Debt [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Carrying value of notes $ 255,000,000      
Debt instrument, interest rate, stated percentage 6.75% 6.75%    
Debt related commitment fees and debt issuance costs   $ 900,000 $ 600,000  
Minimum [Member] | Asset-Based Revolving Credit Facility [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Commitment fee percentage on unused balance 0.25%      
Maximum [Member] | Asset-Based Revolving Credit Facility [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Commitment fee percentage on unused balance 0.375%      
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Asset-Based Revolving Credit Facility [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Debt instrument, basis spread on variable rate 1.50% 1.50%    
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Asset-Based Revolving Credit Facility [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Debt instrument, basis spread on variable rate 2.00% 2.00%    
Base Rate [Member] | Minimum [Member] | Asset-Based Revolving Credit Facility [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Debt instrument, basis spread on variable rate 0.50% 0.50%    
Base Rate [Member] | Maximum [Member] | Asset-Based Revolving Credit Facility [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Debt instrument, basis spread on variable rate 1.00% 1.00%    
Production Costs [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Marketing and advertising expense   $ 10,900,000 12,000,000  
Notes [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Debt instrument term   7 years    
Debt instrument, maturity date   Jun. 01, 2024    
Miami [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Discontinued operation, gain (loss) from disposal of discontinued operation, before income tax     4,700,000  
Dallas TX [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Discontinued operation, gain (loss) from disposal of discontinued operation, before income tax     $ 77,000  
Percentage of total revenue   19.60% 19.30%  
Tampa FL [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Discontinued operation, gain (loss) from disposal of discontinued operation, before income tax     $ 2,000  
Dallas Texas Market [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Discontinued operation, gain (loss) from disposal of discontinued operation, before income tax     500,000  
WQVN-AM Tower Site [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Discontinued operation, gain (loss) from disposal of discontinued operation, before income tax     400,000  
Print Magazine Segment [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Discontinued operation, gain (loss) from disposal of discontinued operation, before income tax     $ 16,000  
Omaha KGBI-FM [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Discontinued operation, gain (loss) from disposal of discontinued operation, before income tax   $ (2,400,000)    
Omaha KCRO-AM and KOTK-AM [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Discontinued operation, gain (loss) from disposal of discontinued operation, before income tax   (1,800,000)    
Lakeside [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Discontinued operation, gain (loss) from disposal of discontinued operation, before income tax   (300,000)    
Covina [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Discontinued operation, gain (loss) from disposal of discontinued operation, before income tax   (200,000)    
Boston [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Discontinued operation, gain (loss) from disposal of discontinued operation, before income tax   $ 200,000    
Los Angeles CA [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Percentage of total revenue   14.80% 15.40%  
Debt Instrument Redemption Period One [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Debt instrument, redemption period, start date   Jun. 01, 2020    
Debt instrument, redemption price, percentage of principal amount redeemed   100.00% 100.00%  
Debt Instrument Redemption Period Two [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Debt instrument, redemption price, percentage of principal amount redeemed   106.75% 106.75%  
Debt instrument, redemption period, end date   Jun. 01, 2020    
Debt instrument, redemption, percentage of aggregate principal amount   35.00% 35.00%  
Debt Instrument Redemption Period Three [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Debt instrument, redemption price, percentage of principal amount redeemed   103.00% 103.00%  
Debt instrument, redemption period, end date   Jun. 01, 2020    
Debt instrument, redemption, percentage of aggregate principal amount   10.00% 10.00%  
Offset to Deferred Tax [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Valuation allowance, deferred tax asset, increase (decrease), amount   $ 5,400,000    
Standby Letters of Credit [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Line of credit facility, maximum borrowing capacity $ 5,000,000      
Swing Line Loans [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Line of credit facility, maximum borrowing capacity $ 7,500,000