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Debt - Private Placement Borrowings (Details) - USD ($) $ in Thousands |  | 9 Months Ended |
--- | --- | --- | ---
Jan. 20, 2016 | Sep. 29, 2018 | Dec. 30, 2017
Debt Instrument [Line Items] |  |  |  |
Long-term debt and capital lease obligations including current maturities |  |  | $ 1,012,797 | $ 924,415
Private Placement Facilities [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Less: Deferred debt issuance costs |  |  | (439) |
Long-term debt and capital lease obligations including current maturities |  |  | $ 628,132 | $ 535,295
Debt Instrument, Maturity Date |  |  | Sep. 15, 2020 |
Private Placement Facilities [Member] | Private placement facilities maturing in September 2020 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Issuance Date |  |  | Sep. 02, 2010 |
Long-term Debt, Gross |  |  | $ 100,000 |
Borrowing Rate |  |  | 3.79% |
Debt Instrument, Maturity Date |  |  | Sep. 02, 2020 |
Private Placement Facilities [Member] | Private placement facilities maturing in January 2024 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Issuance Date |  |  | Jan. 20, 2012 |
Long-term Debt, Gross |  |  | $ 50,000 |
Borrowing Rate |  |  | 3.45% |
Debt Instrument, Maturity Date |  |  | Jan. 20, 2024 |
Private Placement Facilities [Member] | Private placement facilities maturing in January 2022 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Issuance Date | [1] |  | Jan. 20, 2012 |
Long-term Debt, Gross |  |  | $ 28,571 |
Borrowing Rate | [1] |  | 3.09% |
Debt Instrument, Maturity Date | [1] |  | Jan. 20, 2022 |
Private placement facility, frequency of periodic payment |  |  | Annual |
Private placement facility annual payment |  | $ 7,100 |  |
Debt Instrument, Date of First Required Payment |  |  | Jan. 20, 2016 |
Private Placement Facilities [Member] | Private placement facilities maturing in December 2024 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Issuance Date |  |  | Dec. 24, 2012 |
Long-term Debt, Gross |  |  | $ 50,000 |
Borrowing Rate |  |  | 3.00% |
Debt Instrument, Maturity Date |  |  | Dec. 24, 2024 |
Private Placement Facilities [Member] | Private placement facilities maturing in June 2021 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Issuance Date |  |  | Jun. 02, 2014 |
Long-term Debt, Gross |  |  | $ 100,000 |
Borrowing Rate |  |  | 3.19% |
Debt Instrument, Maturity Date |  |  | Jun. 02, 2021 |
Private Placement Facilities [Member] | Private Placement facilities maturing in June 2027 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Issuance Date |  |  | Jun. 16, 2017 |
Long-term Debt, Gross |  |  | $ 100,000 |
Borrowing Rate |  |  | 3.42% |
Debt Instrument, Maturity Date |  |  | Jun. 16, 2027 |
Private Placement Facilities [Member] | Private Placement facilities maturing in September 2029 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Issuance Date |  |  | Sep. 15, 2017 |
Long-term Debt, Gross |  |  | $ 100,000 |
Borrowing Rate |  |  | 3.52% |
Debt Instrument, Maturity Date |  |  | Sep. 15, 2029 |
Private Placement Facilities [Member] | Private Placement facilities maturing in January 2028 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, Issuance Date |  |  | Jan. 02, 2018 |
Long-term Debt, Gross |  |  | $ 100,000 |
Borrowing Rate |  |  | 3.32% |
Debt Instrument, Maturity Date |  |  | Jan. 02, 2028 |
[1] | Annual repayments of approximately $7.1 million for this borrowing commenced on January 20, 2016.

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