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Note M - Long-term Debt (Details Textual) - USD ($)
Mar. 10, 2015
Mar. 10, 2015
Jun. 26, 2016
Mar. 27, 2016
Secured Debt [Member] | Option to Redeem at Redemption Price Equal to Percentage of Principal Amount [Member] | Maximum [Member] | In The Event of Certain Equity Offerings [Member]        
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed   35.00%    
Secured Debt [Member] | Option to Redeem Notes at Redemption Price Equal to the Percentage of Principal Amount plus the Applicable Premium [Member] | Applicable Premium if Percentage of Principal Amount is Greater than Treasury Rate Basis Spread [Member]        
Debt Instrument, Applicable Premium, Percentage of Principal Amount 1.00% 1.00%    
Secured Debt [Member] | Option to Redeem Notes at Redemption Price Equal to the Percentage of Principal Amount plus the Applicable Premium [Member] | Applicable Premium if Treasury Rate Basis Spread is Greater than Percentage of Principal Amount [Member] | Treasury Rate [Member]        
Debt Instrument, Applicable Premium, Treasury Rate Basis Spread 0.50% 0.50%    
Secured Debt [Member] | Option to Redeem Notes at Redemption Price Equal to the Percentage of Principal Amount plus the Applicable Premium [Member]        
Debt Instrument, Redemption Price, Percentage   100.00%    
Secured Debt [Member] | In The Event of Certain Equity Offerings [Member]        
Debt Instrument, Redemption Price, Percentage   110.00%    
Secured Debt [Member] | In the Event of Chang of Control Offer [Member]        
Debt Instrument, Redemption Price, Percentage   101.00%    
Secured Debt [Member] | In the Event the Company Sells Certain Assets and Fails to Use the Proceeds as Required [Member]        
Debt Instrument, Redemption Price, Percentage   100.00%    
Secured Debt [Member]        
Debt Instrument, Face Amount $ 135,000,000 $ 135,000,000    
Debt Instrument, Interest Rate, Stated Percentage 10.00% 10.00%    
Debt Issuance Costs, Gross $ 5,985,000 $ 5,985,000    
Debt Instrument, Term   5 years    
Debt Instrument, Fixed Charge Coverage Ratio 2 2    
Debt Instrument, Priority Secured Leverage Ratio 0.4 0.4    
Debt Instrument Secured Leverage Ratio 3.75 3.75    
Debt Instrument, Event of Default, Percentage Ownership Enabling the Declaration of Due and Payable 25.00% 25.00%    
Special Cash Dividend [Member]        
Dividends, Cash $ 116,100,000      
Debt Instrument, Interest Rate, Stated Percentage     10.00% 10.00%