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Note 13 - Taxes on Income (Details) - Effective Income Tax Rate Reconciliation (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Note 13 - Taxes on Income (Details) - Effective Income Tax Rate Reconciliation [Line Items]
Income taxes at U.S federal statutory rate	$ 12,510us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ 24,151us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ 13,336us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Increase (decrease) in taxes resulting from:
State income taxes, net of federal tax effect	57us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes	496us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes	1,116us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Non-deductible business expenses	570us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther	601us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther	1,009us-gaap_IncomeTaxReconciliationNondeductibleExpenseOther
Non-deductible employee compensation	491tile_IncomeTaxReconciliationNonDeductibleCompensation	409tile_IncomeTaxReconciliationNonDeductibleCompensation	469tile_IncomeTaxReconciliationNonDeductibleCompensation
Tax effects of Company owned life insurance	(395)us-gaap_IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	(1,117)us-gaap_IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	(448)us-gaap_IncomeTaxReconciliationNondeductibleExpenseLifeInsurance
Tax effects of undistributed earnings from foreign subsidiaries not deemed to be indefinitely reinvested	362tile_IncomeTaxReconciliationNondeductibleUndistributedEarningsFromForeignSubsidiaries	562tile_IncomeTaxReconciliationNondeductibleUndistributedEarningsFromForeignSubsidiaries	321tile_IncomeTaxReconciliationNondeductibleUndistributedEarningsFromForeignSubsidiaries
Foreign and U.S. tax effects attributable to foreign operations	(3,021)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential	(3,958)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential	(1,174)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
Valuation allowance effect – State NOL	468us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	3,232us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	(187)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Non-deductible reserve against capital asset	0tile_IncomeTaxReconciliationTaxReserveAdjustment	(218)tile_IncomeTaxReconciliationTaxReserveAdjustment	1,188tile_IncomeTaxReconciliationTaxReserveAdjustment
Advance pricing agreements with tax authorities	0tile_IncomeTaxReconciliationAdvancePricingAgreementsWithTaxAuthorities	(2,492)tile_IncomeTaxReconciliationAdvancePricingAgreementsWithTaxAuthorities	0tile_IncomeTaxReconciliationAdvancePricingAgreementsWithTaxAuthorities
Federal tax credits	0us-gaap_IncomeTaxReconciliationTaxCredits	(595)us-gaap_IncomeTaxReconciliationTaxCredits	(891)us-gaap_IncomeTaxReconciliationTaxCredits
Other	(108)us-gaap_IncomeTaxReconciliationOtherAdjustments	(322)us-gaap_IncomeTaxReconciliationOtherAdjustments	465us-gaap_IncomeTaxReconciliationOtherAdjustments
Income tax expense	10,934us-gaap_IncomeTaxExpenseBenefit	20,749us-gaap_IncomeTaxExpenseBenefit	15,204us-gaap_IncomeTaxExpenseBenefit
Continuing Operations [Member]
Increase (decrease) in taxes resulting from:
Income tax expense	$ 10,934us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember	$ 20,749us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember	$ 15,204us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentContinuingOperationsMember

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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