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Note 6 - Long-term Debt (Details Textual) - USD ($)
$ in Thousands
6 Months Ended
Apr. 12, 2017
Feb. 14, 2017
Jun. 03, 2017
Reclassification of an Asset to a Direct Deduction on Debt [Member] | December 3, 2016 [Member]      
Prior Period Reclassification Adjustment     $ 2,386
Interest Rate Swap Related to Series E Private Placement Note [Member]      
Derivative, Amount of Hedged Item     $ 125,000
Interest Rate Swap Related to Public Notes [Member]      
Derivative, Amount of Hedged Item   $ 150,000  
London Interbank Offered Rate (LIBOR) [Member] | Interest Rate Swap Related to Series E Private Placement Note [Member]      
Derivative, Basis Spread on Variable Rate     2.22%
London Interbank Offered Rate (LIBOR) [Member] | Interest Rate Swap [Member]      
Derivative, Basis Spread on Variable Rate   1.86%  
Term Loan [Member]      
Long-term Debt $ 100,000    
Repayments of Debt   $ 158,750  
Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Debt Instrument, Basis Spread on Variable Rate 1.25%    
Public Notes [Member]      
Debt Instrument, Face Amount   $ 300,000  
Debt Instrument, Term   10 years  
Debt Instrument, Interest Rate, Stated Percentage   4.00%  
Revolving Credit Facility [Member]      
Line of Credit Facility, Maximum Borrowing Capacity $ 400,000    
Line of Credit Facility, Commitment Fee Percentage 0.15%    
Repayments of Lines of Credit   $ 138,000  
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Debt Instrument, Basis Spread on Variable Rate 1.10%