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LONG-TERM DEBT (Details) (USD $) |  |  |  |  |  | 0 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 28, 2013 | Dec. 29, 2012 | Jun. 25, 2011 | Dec. 28, 2013 6.625% senior unsecured notes due in April 2020 | Dec. 29, 2012 6.625% senior unsecured notes due in April 2020 | Aug. 15, 2012 Revolving credit agreement | Dec. 28, 2013 Revolving credit agreement | Dec. 28, 2013 Revolving credit agreement LIBOR | Dec. 28, 2013 Revolving credit agreement LIBOR Minimum | Dec. 28, 2013 Revolving credit agreement LIBOR Maximum | Dec. 28, 2013 Revolving credit agreement Prime lending rate | Dec. 28, 2013 Revolving credit agreement Federal Funds rate | Dec. 28, 2013 Revolving credit agreement Federal Funds rate Minimum | Dec. 28, 2013 Revolving credit agreement Federal Funds rate Maximum | Dec. 28, 2013 IDR Bonds | Dec. 29, 2012 IDR Bonds | Dec. 28, 2013 Other notes | Dec. 29, 2012 Other notes
Long-term debt: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total long-term debt | $ 471,109,000 | $ 472,817,000 |  | $ 450,000,000 | $ 450,000,000 |  |  |  |  |  |  |  |  |  | $ 8,500,000 | $ 8,500,000 | $ 1,368,000 | $ 1,609,000
Unamortized premium on senior unsecured notes |  |  |  | 11,241,000 | 12,708,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Less current installments of long-term debt | 202,000 | 224,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, excluding current installments | 470,907,000 | 472,593,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate on notes (as a percent) |  |  |  | 6.625% | 6.625% |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  | 150,000,000 | 450,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of multicurrency revolving credit agreement |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  | 400,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Increase in borrowing capacity, maximum |  |  |  |  |  |  | 200,000,000 |  |  |  |  |  |  |  |  |  |  |
Variable interest rate basis |  |  |  |  |  |  |  | LIBOR (based on a 1, 2, 3 or 6 month interest period, as selected by the Company) |  |  | Prime lending rate | Federal Funds Rate |  |  |  |  |  |
Basis points added to variable rate (as a percent) |  |  |  |  |  |  |  |  | 1.25% | 2.25% |  | 0.50% | 0.25% | 1.25% |  |  |  |
Variable interest rate, base period |  |  |  |  |  |  |  | 1 month |  |  |  |  |  |  |  |  |  |
Additional borrowing capacity |  |  |  |  |  |  | 382,100,000 |  |  |  |  |  |  |  |  |  |  |
Standby letters of credit outstanding |  |  |  |  |  |  | 17,900,000 |  |  |  |  |  |  |  |  |  |  |
Effective interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.21% | 0.30% |  |
Minimum aggregate maturities of long-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2014 | 202,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2015 | 235,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2016 | 229,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2017 | 15,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2018 | $ 7,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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