Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Asset-Based Revolving Credit Facility - Additional Information (Detail)

v3.10.0.1
Long-Term Debt - Asset-Based Revolving Credit Facility - Additional Information (Detail)
3 Months Ended 9 Months Ended
May 19, 2017
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Debt Instrument [Line Items]          
Debt instrument, debt default, description of violation or event of default   $ 245,000,000   $ 245,000,000  
Amortization of financing costs       855,000 $ 645,000
Debt related commitment fees and debt issuance costs       $ 6,300,000  
Asset-Based Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Debt instrument, debt default, description of violation or event of default $ 30,000,000        
Debt instrument, interest rate, increase (decrease) 2.00%        
Line of credit facility, covenant terms       The Credit Agreement includes a springing fixed charge coverage ratio of 1.0 to 1.0, which is tested during the period commencing on the last day of the fiscal month most recently ended prior to the date on which Availability (as defined in the Credit Agreement) is less than the greater of 15% of the Maximum Revolver Amount (as defined in the Credit Agreement) and $4.5 million and continuing for a period of 60 consecutive days after the first day on which Availability exceeds such threshold amount.  
Equity distribution       $ 2,000,000  
Fixed charge coverage ratio       1.00  
Debt Ratio       6.00  
Debt instrument, covenant description       The amount of dividends or equity distributions made is not to exceed $2.0 million in any fiscal quarter or $20.0 million in the aggregate, so long as, after giving pro forma effect thereto, the Consolidated Total Debt Ratio would be less than or equal to 6.00 to 1.00.  
Debt instrument, debt default, description of violation or event of default       The Credit Agreement provides for the following events of default: (i) default for non-payment of any principal or letter of credit reimbursement when due or any interest, fees or other amounts within five days of the due date; (ii) the failure by any borrower or any subsidiary to comply with any covenant or agreement contained in the Credit Agreement or any other loan document, in certain cases subject to applicable notice and lapse of time; (iii) any representation or warranty made pursuant to the Credit Agreement or any other loan document is incorrect in any material respect when made; (iv) certain defaults of other indebtedness of any borrower or any subsidiary of indebtedness of at least $10 million; (v) certain events of bankruptcy or insolvency with respect to any borrower or any subsidiary; (vi) certain judgments for the payment of money of $10 million or more; (vii) a change of control; and (viii) certain defaults relating to the loss of FCC licenses, cessation of broadcasting and termination of material station contracts.  
Aggregate indebtedness   10,000,000   $ 10,000,000  
Amortization of financing costs       700,000  
Debt related commitment fees and debt issuance costs   $ 53,000 $ 63,000 $ 200,000 $ 86,000
Debt instrument blended interest rate   4.02%   4.02%  
Asset-Based Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Debt instrument, debt default, description of violation or event of default $ 30,000,000        
Debt instrument, interest rate, increase (decrease) 2.00%        
Asset-Based Revolving Credit Facility [Member] | Letter of Credit [Member]          
Debt Instrument [Line Items]          
Debt instrument, debt default, description of violation or event of default $ 5,000,000        
Asset-Based Revolving Credit Facility [Member] | Swingline Credit Facility [Member]          
Debt Instrument [Line Items]          
Debt instrument, debt default, description of violation or event of default $ 7,500,000        
Minimum [Member] | Asset-Based Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Line of credit facility, unused capacity, commitment fee percentage 0.25%        
Minimum [Member] | Asset-Based Revolving Credit Facility [Member] | Base Rate [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 0.50%     0.50%  
Minimum [Member] | Asset-Based Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 1.50%     1.50%  
Minimum [Member] | Asset-Based Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Line of credit facility, unused capacity, commitment fee percentage 0.25%     0.25%  
Minimum [Member] | Asset-Based Revolving Credit Facility [Member] | Base Rate [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 0.50%        
Minimum [Member] | Asset-Based Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 1.50%        
Maximum [Member] | Asset-Based Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Line of credit facility, unused capacity, commitment fee percentage 0.375%        
Maximum [Member] | Asset-Based Revolving Credit Facility [Member] | Base Rate [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 1.00%     1.00%  
Maximum [Member] | Asset-Based Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 2.00%     2.00%  
Maximum [Member] | Asset-Based Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Line of credit facility, unused capacity, commitment fee percentage 0.375%     0.375%  
Maximum [Member] | Asset-Based Revolving Credit Facility [Member] | Base Rate [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 1.00%        
Maximum [Member] | Asset-Based Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 2.00%