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Note 13 - Taxes on Income (Details) - Deferred Tax Assets and Liabilities (USD $) In Thousands, unless otherwise specified	Dec. 28, 2014	Dec. 29, 2013
Deferred Tax Assets and Liabilities [Abstract]
Deferred income taxes (current asset)	$ 9,732us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent	$ 10,232us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent
Deferred tax asset (non-current asset)	33,138us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent	34,162us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent
Deferred income taxes (non-current liabilities)	(11,002)us-gaap_DeferredTaxLiabilitiesNoncurrent	(15,049)us-gaap_DeferredTaxLiabilitiesNoncurrent
	$ 31,868us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 29,345us-gaap_DeferredTaxAssetsLiabilitiesNet

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences expected to be realized or consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31917-109318



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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31917-109318



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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31917-109318



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