XML 68 R53.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Property and Equipment - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | Dec. 30, 2012
--- | ---
Property, Plant and Equipment [Line Items] |
Estimated cost to complete construction-in-progress | $ 19.0

X
- Definition Estimated Cost To Complete Approved Projects And Current Construction In Progress + References No definition available. + Details
Name: | tile_EstimatedCostToCompleteApprovedProjectsAndCurrentConstructionInProgress
Namespace Prefix: | tile_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration