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Long-term Debt and Obligations Under Capital Leases (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 29, 2015
Dec. 30, 2014
Long-term Debt    
Long-term debt $ 25,694 $ 50,822
Less current maturities 144 129
Long-term debt, excluding current maturities 25,550 50,693
Maturities of long-term debt    
2016 144  
2017 159  
2018 25,177  
2019 196  
2020 18  
Notional amount of hedge obligation $ 25,000  
Fixed interest rate of derivative (as a percent) 3.83%  
Interest rate swap, entered October 22, 2008    
Maturities of long-term debt    
Notional amount of interest rate swap $ 25,000  
Notional amount of hedge obligation $ 25,000  
Fixed interest rate of derivative (as a percent) 3.83%  
Interest rate swap, entered January 7, 2009    
Maturities of long-term debt    
Notional amount of interest rate swap $ 25,000  
Notional amount of hedge obligation $ 25,000  
Fixed interest rate of derivative (as a percent) 2.34%  
Installment loan, due 2015 - 2020    
Long-term Debt    
Long-term debt $ 694 $ 822
Maturities of long-term debt    
Weighted-average interest rate (as a percent) 10.46% 10.46%
Revolver    
Long-term Debt    
Long-term debt $ 25,000 $ 50,000
Maturities of long-term debt    
Weighted-average interest rate (as a percent) 3.22% 3.96%
Revolving credit facility, maximum borrowing capacity $ 200,000  
Revolving credit facility contingent increase in maximum borrowing capacity 200,000  
Revolving credit facility maximum borrowing capacity after contingent increase 400,000  
Revolving credit facility, amount outstanding 25,000  
Revolving credit facility, remaining borrowing capacity 168,400  
Letters of credit outstanding $ 6,600  
Revolving credit facility, fixed charge coverage ratio 2.00  
Revolving credit facility, leverage ratio 3.00  
Debt instrument condition for additional borrowing of secured debt, based on percentage of consolidated tangible net worth 15.00%  
Revolver | Minimum    
Maturities of long-term debt    
Percentage of commitment fee on unused credit facility 0.125%  
Revolver | Maximum    
Maturities of long-term debt    
Percentage of commitment fee on unused credit facility 0.30%  
Revolver | LIBOR | Minimum    
Maturities of long-term debt    
Interest rate added to base rate (as a percent) 0.875%  
Revolver | LIBOR | Maximum    
Maturities of long-term debt    
Interest rate added to base rate (as a percent) 1.875%  
Revolver | Federal Funds    
Maturities of long-term debt    
Interest rate added to base rate (as a percent) 0.50%  
Revolver | Adjusted one-month Eurodollar Rate    
Maturities of long-term debt    
Interest rate added to base rate (as a percent) 1.00%