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Note 13 - Taxes on Income (Details) - Net Deferred Tax Asset (USD $) In Thousands, unless otherwise specified	Dec. 28, 2014	Dec. 29, 2013
Net Deferred Tax Asset [Abstract]
Basis differences of property and equipment	$ 15,958us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment	$ 17,282us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Basis difference of intangible assets	384us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	346us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets
Foreign currency	3,848us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains	2,755us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains
Net operating loss carryforwards	28,463us-gaap_DeferredTaxAssetsOperatingLossCarryforwards	31,944us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Valuation allowances on net operating loss carryforwards	(10,298)us-gaap_OperatingLossCarryforwardsValuationAllowance	(9,577)us-gaap_OperatingLossCarryforwardsValuationAllowance
Federal tax credits	2,751us-gaap_DeferredTaxAssetsTaxCreditCarryforwards	2,490us-gaap_DeferredTaxAssetsTaxCreditCarryforwards
Deferred compensation	21,190us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	20,743us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther
Basis difference of prepaids, accruals and reserves	7,816us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	7,265us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals
Pensions	3,152us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions
Pensions		774tile_DeferredTaxLiabilitiesDeferredPensions
Tax effects of undistributed earnings from foreign subsidiaries not deemed to be indefinitely reinvested	948tile_TaxLiabilitiesEffectsOfUndistributedEarningsFromForeignSubsidiariesNotDeemedToBeIndefinitelyReinve	1,704tile_TaxLiabilitiesEffectsOfUndistributedEarningsFromForeignSubsidiariesNotDeemedToBeIndefinitelyReinve
Basis difference of other assets and liabilities	68us-gaap_DeferredTaxLiabilitiesOther	659us-gaap_DeferredTaxLiabilitiesOther
	53,074us-gaap_DeferredTaxAssetsGross	52,865us-gaap_DeferredTaxAssetsGross
	$ 21,206us-gaap_DeferredIncomeTaxLiabilities	$ 23,520us-gaap_DeferredIncomeTaxLiabilities

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Deferred Tax Liabilities Deferred Pensions

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Tax effects of undistributed earnings from foreign subsidiaries not deemed to be indefinitely reinvested.

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