Note 19 - Quarterly Data and Share Information (Unaudited) (Details) (USD $)	3 Months Ended	12 Months Ended
Dec. 28, 2014	Sep. 28, 2014	Dec. 29, 2013	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Quarterly Financial Information Disclosure [Abstract]
Restructuring Costs and Asset Impairment Charges		$ 12,400,000
	12,000,000tile_DebtRetirementExpense		1,700,000tile_DebtRetirementExpense	11,989,000tile_DebtRetirementExpense	1,667,000tile_DebtRetirementExpense	0tile_DebtRetirementExpense
			$ 7,000,000tile_FireRelatedGainLoss	$ 0tile_FireRelatedGainLoss	$ 6,954,000tile_FireRelatedGainLoss	$ (1,748,000)tile_FireRelatedGainLoss

Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Name:	us-gaap_RestructuringCostsAndAssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration