Annual report pursuant to Section 13 and 15(d)

Income Taxes - Narrative (Details)

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Income Taxes - Narrative (Details) - USD ($)
1 Months Ended 11 Months Ended 12 Months Ended
Feb. 03, 2018
Dec. 31, 2017
Feb. 03, 2018
Jan. 28, 2017
Jan. 30, 2016
Jul. 10, 2015
Operating Loss Carryforwards [Line Items]            
Federal net operating loss carryforwards $ 321,000,000   $ 321,000,000      
State net operating loss carryforwards 260,000,000   260,000,000      
Non-cash tax charge relating to changes in the long-term deferred tax liability related to the tax amortization of FCC license asset     643,000 $ 788,000 $ 788,000  
Income tax benefit attributable to reversal of long-term deferred tax liability relating to sale of FCC license asset     4,147,000      
Income Tax Uncertainties [Abstract]            
Unrecognized tax benefits for uncertain tax positions 0   0 $ 0    
Interest of penalties charged or accrued in relation to unrecognized tax benefits $ 0   $ 0      
Tax Cuts and Jobs Act [Abstract]            
U.S. federal corporate income tax statutory rate 21.00% 35.00% 33.80% 35.00% 35.00%  
NOL deduction limitation on taxable income, Percent 80.00%          
Shareholder Rights Plan [Abstract]            
Preferred Stock, Par or Stated Value Per Share $ 0.01   $ 0.01 $ 0.01    
one one-thousandth of a share of Preferred Stock unit price           $ 9.00
Related party, ownership interest in Company, percentage           4.99%
Professional fees incurred for Shareholder Rights Plan         $ 446,000  
2023 - Earliest Tax Year [Member]            
Operating Loss Carryforwards [Line Items]            
Federal NOLs, expiration date     Feb. 03, 2024      
2037 - Latest Tax Year [Member]            
Operating Loss Carryforwards [Line Items]            
Federal NOLs, expiration date     Jan. 30, 2038