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Note 8 - Borrowings (Details Textual) € in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 USD ($) | Dec. 31, 2016 EUR (€) | Dec. 31, 2017 USD ($) | Jan. 01, 2017 USD ($) | Jan. 03, 2016 USD ($)
Threshold Of Other Indebtedness Triggering Default |  |  | $ 20,000,000 |  |
Long-term Debt |  |  | 229,928,000 |  |
Debt Issuance Costs, Net |  |  | 2,300,000 | $ 1,400,000 |
Amortization of Debt Issuance Costs and Discounts |  |  | 500,000 | 500,000 | $ 500,000
Interest Rate Swap [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net |  |  | 0 |  |
Derivative, Notional Amount |  |  | 100,000,000 |  |
Interest Rate Swap [Member] | Other Nonoperating Income (Expense) [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net |  |  | 0 |  |
Interest Rate Swap [Member] | Other Assets [Member] |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  |  | 900,000 |  |
Syndicated Facility Agreement [Member] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | 250,000,000 |  |
Line of Credit Facility, Option to Increase Maximum Borrowing Capacity, Amount |  |  | $ 150,000,000 |  |
Maximum Percentage Of First Tier Subsidiary Stock Pledged As Collateral |  |  | 65.00% |  |
Long-term Line of Credit |  |  | $ 59,900,000 |  |
Letters of Credit Outstanding, Amount |  |  | $ 6,000,000 |  |
Long-term Debt, Weighted Average Interest Rate, at Point in Time |  |  | 3.00% |  |
Syndicated Facility Agreement [Member] | One of the Company's Foreign Subsidiaries [Member] |  |  |  |  |
Proceeds from Lines of Credit | $ 63,500,000 | € 61 |  |  |
Syndicated Facility Agreement [Member] | For Each Fiscal Quarter Thereafter [Member] |  |  |  |  |
Maximum Consolidated Net Leverage Ratio |  |  | 3.75 |  |
Minimum Consolidated Interest Coverage Ratio |  |  | 2.25 |  |
Syndicated Facility Agreement [Member] | Federal Funds Rate [Member] |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 0.50% |  |
Syndicated Facility Agreement [Member] | Minimum [Member] |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  | 0.25% |  |
Line of Credit Facility, Commitment Fee Percentage |  |  | 0.20% |  |
Syndicated Facility Agreement [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 1.25% |  |
Syndicated Facility Agreement [Member] | Maximum [Member] |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  | 1.50% |  |
Line of Credit Facility, Commitment Fee Percentage |  |  | 0.35% |  |
Syndicated Facility Agreement [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 2.50% |  |
Syndicated Facility Agreement [Member] | Term Loan A [Member] |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 177,500,000 |  |
Debt Instrument, Periodic Payment |  |  | 3,750,000 |  |
Long-term Debt |  |  | 170,000,000 |  |
Syndicated Facility Agreement [Member] | Standby Letters of Credit [Member] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | 40,000,000 |  |
Other Line Of Credit [Member] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | 9,800,000 |  |
Long-term Line of Credit |  |  | $ 0 | $ 0 |
Other Line Of Credit [Member] | Minimum [Member] |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  | 2.50% |  |
Other Line Of Credit [Member] | Maximum [Member] |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  | 6.50% |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition The amount of which the reporting entity has the option to increase the 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 No definition available. + Details
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- Definition The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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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://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 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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 + 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 Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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://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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