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Long-term debt Debt Instrument (Details) - USD ($) |  | 6 Months Ended |
--- | --- | --- | ---
Jan. 08, 2016 | Jul. 02, 2016 | Jul. 04, 2015 | Jan. 02, 2016
Line of Credit Facility [Line Items] |  |  |  |
Capital Lease Obligations, Noncurrent |  | $ 1,000 |  | $ 71,000
Long-term Debt and Capital Lease Obligations |  | 175,001,000 |  | 185,071,000
Letters of Credit Outstanding, Amount |  | 300,000 |  |
Adjusted London Interbank Offered Rate (LIBOR) | Minimum |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.125% |  |  |
Adjusted London Interbank Offered Rate (LIBOR) | Maximum |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.00% |  |  |
Letter of Credit [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of Credit Facility, Current Borrowing Capacity | $ 50,000,000.0 |  |  |
Revolving Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of Credit Facility, Current Borrowing Capacity | 450,000,000.0 |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 550,000,000.0 |  |  |
Long-term Line of Credit, Noncurrent |  | 175,000,000 |  | $ 185,000,000
Interest Expense, Debt |  | $ 1,200,000 | $ 2,100,000 |
Revolving Credit Facility [Member] | Base Rate | Minimum |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 0.125% |  |  |
Revolving Credit Facility [Member] | Base Rate | Maximum |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.00% |  |  |
Other Foreign Currency Sublimit [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of Credit Facility, Current Borrowing Capacity | $ 125,000,000.0 |  |  |
Revolving Credit Facility [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of Credit Facility, Interest Rate at Period End |  | 1.75% |  |
Revolving Credit Facility [Member] | Minimum |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.175% |  |  |
Revolving Credit Facility [Member] | Maximum |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.30% |  |  |
Revolving Credit Facility [Member] | One Month Adjusted London Interbank Offered Rate (LIBOR) |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.00% |  |  |
Revolving Credit Facility [Member] | Federal Fund |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 0.50% |  |  |

X
- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45023-112735 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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 + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + 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://www.xbrl.org/2003/role/presentationRef -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 effective interest rate at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Definition Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 + Details
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- Definition The carrying value as of the balance sheet date of the noncurrent portion 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://www.xbrl.org/2003/role/presentationRef -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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=28361426&loc=d3e1314-112600 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=28361426&loc=d3e1336-112600 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Line-of-Credit Arrangement -URI http://asc.fasb.org/extlink&oid=6517033 + Details
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