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Income Taxes (Details) - USD ($)
1 Months Ended 3 Months Ended 11 Months Ended 12 Months Ended
Feb. 03, 2018
May 05, 2018
Apr. 29, 2017
Dec. 31, 2017
Feb. 03, 2018
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  
Increase (Decrease) in Accrued Taxes Payable [Abstract]            
Income tax non-cash benefit relating to changes in the long-term deferred tax liability related to amortization of FCC license asset   $ 0 $ 197,000      
Tax Cuts and Jobs Act [Abstract]            
Taxes at federal statutory rates 21.00%     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
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