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Borrowings Borrowings - Additional Information (Details) |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 10, 2020 USD ($) | Jun. 30, 2016 USD ($) | Dec. 29, 2019 USD ($) | Dec. 30, 2018 USD ($)
Additional disclosure |  |  |  |
Short-term debt |  |  | $ 0 | $ 0
Credit facility |  |  |  |
Additional disclosure |  |  |  |
Current borrowing capacity |  | $ 20,000,000 |  |
Additional borrowing capacity subject to lender participation |  | $ 100,000,000 |  |
Credit facility | Revolving credit facility |  |  |  |
Additional disclosure |  |  |  |
Amounts outstanding |  |  | 206,000,000 | 192,500,000
Credit facility | Revolving credit facility | Federal Funds Rate |  |  |  |
Additional disclosure |  |  |  |
Interest rate margin (as a percent) |  | 0.50% |  |
Credit facility | Revolving credit facility | LIBOR |  |  |  |
Additional disclosure |  |  |  |
Interest rate margin (as a percent) |  | 1.00% |  |
Credit facility | Revolving credit facility | Canadian Dealer Offered Rate (CDOR) |  |  |  |
Additional disclosure |  |  |  |
Interest rate margin (as a percent) |  | 1.00% |  |
Credit facility | Letter of credit |  |  |  |
Additional disclosure |  |  |  |
Amounts outstanding |  |  | $ 7,500,000 | 7,800,000
Unamortized Debt Issuance Expense |  |  |  | $ 1,700,000
Credit facility | Swingline loans |  |  |  |
Additional disclosure |  |  |  |
Current borrowing capacity |  | $ 15,000,000 |  |
Revolving credit facility | Credit facility |  |  |  |
Additional disclosure |  |  |  |
Lease adjusted leverage ration during fiscal year 2020 |  |  | 4.72 |
Revolving credit facility | Credit facility | Line of credit |  |  |  |
Additional disclosure |  |  |  |
Current borrowing capacity |  | 400,000,000 |  |
Letter of credit | Credit facility | Line of credit |  |  |  |
Additional disclosure |  |  |  |
Current borrowing capacity |  | $ 25,000,000 |  |
Unamortized Debt Issuance Expense |  |  | $ 1,000,000 |
Subsequent event |  |  |  |
Additional disclosure |  |  |  |
Lease adjusted leverage ration during fiscal year 2020 | 5.0 |  |  |
Lease adjusted leverage ratio during fiscal year 2021 | 4.75 |  |  |
Lease adjusted leverage ration during fiscal year 2022 and thereafter | 4.50 |  |  |
Subsequent event | New credit facility |  |  |  |
Additional disclosure |  |  |  |
Additional borrowing capacity subject to lender participation | $ 100,000,000 |  |  |
Proceeds from long-term lines of credit | $ 186,600,000 |  |  |
Line of credit facility, periodic payment, principal, percentage | 7.00% |  |  |
Subsequent event | New credit facility | Revolving credit facility | Federal Funds Rate |  |  |  |
Additional disclosure |  |  |  |
Interest rate margin (as a percent) | 0.50% |  |  |
Subsequent event | New credit facility | Revolving credit facility | LIBOR |  |  |  |
Additional disclosure |  |  |  |
Interest rate margin (as a percent) | 1.00% |  |  |
Subsequent event | New credit facility | Revolving credit facility | Canadian Dealer Offered Rate (CDOR) |  |  |  |
Additional disclosure |  |  |  |
Interest rate margin (as a percent) | 1.00% |  |  |
Subsequent event | New credit facility | Line of credit |  |  |  |
Additional disclosure |  |  |  |
Current borrowing capacity | $ 300,000,000 |  |  |
Maximum sale leaseback transactions | 50,000,000 |  |  |
Subsequent event | New credit facility | Letter of credit |  |  |  |
Additional disclosure |  |  |  |
Current borrowing capacity | 25,000,000 |  |  |
Subsequent event | New credit facility | Swingline loans |  |  |  |
Additional disclosure |  |  |  |
Current borrowing capacity | 15,000,000 |  |  |
Subsequent event | Revolving credit facility | New credit facility | Line of credit |  |  |  |
Additional disclosure |  |  |  |
Current borrowing capacity | 161,500,000 |  |  |
Subsequent event | Term loan | New credit facility | Line of credit |  |  |  |
Additional disclosure |  |  |  |
Current borrowing capacity | 138,500,000 |  |  |
Subsequent event | Foreign line of credit | New credit facility | Revolving credit facility |  |  |  |
Additional disclosure |  |  |  |
Current borrowing capacity | $ 20,000,000 |  |  |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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