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Long-Term Obligations - Narrative (Details) € in Millions |  |  | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Aug. 09, 2017 USD ($) | Mar. 02, 2017 USD ($) | Mar. 02, 2017 EUR (€) | Jul. 01, 2017 USD ($) | Jul. 02, 2016 USD ($) | May 24, 2017 USD ($) | Dec. 31, 2016 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |
Proceeds from issuance of debt |  |  |  | $ 8,000,000 | $ 46,046,000 |  |
Payment of debt issuance costs |  |  |  | 1,147,000 | $ 0 |  |
Unamortized debt issuance costs |  |  |  | $ 1,325,000 |  |  |
Weighted average interest rate for revolving credit facility (in hundredths) |  |  |  | 1.78% |  |  |
Loan receivable |  |  |  | $ 357,000 |  |  |
Capital lease obligations |  |  |  | 4,557,000 |  |  | $ 4,309,000
Revolving Credit Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving Credit Facility, due 2022 |  |  |  | 60,673,000 |  |  | $ 61,494,000
Remaining borrowing capacity |  |  |  | 239,841,000 |  |  |
Revolving Credit Facility [Member] | 2017 Credit Agreement [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Payment of debt issuance costs |  |  |  | 1,147,000 |  |  |
Revolving Credit Facility [Member] | Euro-Denominated Borrowing [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Revolving Credit Facility, due 2022 |  |  |  | $ 25,673,000 |  |  |
Capital Lease Obligations [Member] | Sale Leaseback Arrangement [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Effective interest rate |  |  |  | 1.70% |  |  |
Net purchase option |  |  |  | $ 1,518,000 |  |  |
Capital lease obligations |  |  |  | 4,444,000 |  |  |
Capital Lease Obligations [Member] | PAAL Equipment Capital Lease [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Capital lease obligations |  |  |  | $ 113,000 |  |  |
Weighted average interest rate |  |  |  | 3.43% |  |  |
Remaining term |  |  |  | 2 years 8 months 12 days |  |  |
Revolving Credit Facility [Member] | 2017 Credit Agreement [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Term of unsecured revolving credit facility |  | 5 years | 5 years |  |  |  |
Borrowing capacity available under committed portion |  | $ 200,000,000 |  |  |  | $ 300,000,000 |
Additional borrowing capacity |  | $ 100,000,000 |  |  |  |  |
Basis spread on variable rate floor (as a percentage) |  | 0.00% | 0.00% |  |  |  |
Percentage of foreign unrestricted cash |  | 65.00% |  |  |  |  |
Maximum unrestricted cash |  | $ 30,000,000 |  |  |  |  |
Proceeds from issuance of debt |  | $ 42,000,000 | € 26.3 |  |  |  |
Maximum consolidated leverage ratio |  | 3.5 | 3.5 |  |  |  |
Minimum consolidated interest coverage ratio |  | 3 | 3 |  |  |  |
Revolving Credit Facility [Member] | 2017 Credit Agreement [Member] | Federal Funds Rate [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate (in hundredths) |  | 0.50% | 0.50% |  |  |  |
Revolving Credit Facility [Member] | 2017 Credit Agreement [Member] | Thirty-day LIBOR [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate (in hundredths) |  | 0.50% | 0.50% |  |  |  |
Revolving Credit Facility [Member] | 2017 Credit Agreement [Member] | LIBOR [Member] | Minimum [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate (in hundredths) |  | 1.00% | 1.00% |  |  |  |
Revolving Credit Facility [Member] | 2017 Credit Agreement [Member] | LIBOR [Member] | Maximum [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate (in hundredths) |  | 2.00% | 2.00% |  |  |  |
Subsequent Event [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Proceeds from borrowings | $ 170,018,000 |  |  |  |  |  |
Subsequent Event [Member] | Revolving Credit Facility [Member] | Euro-Denominated Borrowing [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Proceeds from borrowings | 61,769,000 |  |  |  |  |  |
Subsequent Event [Member] | Revolving Credit Facility [Member] | Canadian-Denominated Borrowing [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Proceeds from borrowings | $ 62,690,000 |  |  |  |  |  |

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- 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. + 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 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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