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Fair value measurement - additional information (Detail) (USD $)	Mar. 29, 2015	Dec. 31, 2014
Fair Value Measurements [Line Items]
Fair value measurement with unobservable inputs reconciliations liability value	$ 29,825,000us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	$ 33,433,000us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Current portion of contingent consideration	7,462,000tfx_CurrentPortionOfContingentConsideration	11,276,000tfx_CurrentPortionOfContingentConsideration
Fair value measurement with unobservable inputs reconciliations other liabilities	22,300,000tfx_FairValueMeasurementWithUnobservableInputsReconciliationContingentLiabilityInAcquisitionNoncurrent
Minimum
Fair Value Measurements [Line Items]
Fair value of contingent consideration liability associated with future milestone	11,000,000tfx_EstimatedFairValueOfContingentConsiderationInEventCompanyAchievesSpecifiedMilestones / us-gaap_RangeAxis = us-gaap_MinimumMember
Maximum
Fair Value Measurements [Line Items]
Fair value of contingent consideration liability associated with future milestone	$ 78,932,000tfx_EstimatedFairValueOfContingentConsiderationInEventCompanyAchievesSpecifiedMilestones / us-gaap_RangeAxis = us-gaap_MaximumMember

X

- Definition

Current portion of contingent consideration.

+ References

No definition available.

+ Details

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X

- Definition

Estimated fair value of contingent consideration in event company achieves specified milestones.

+ References

No definition available.

+ Details

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- Details

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X

- Definition

Fair value measurement with unobservable inputs reconciliation contingent liability in acquisition noncurrent.

+ References

No definition available.

+ Details

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Namespace Prefix:	tfx_
Data Type:	xbrli:monetaryItemType
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X

- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

+ Details

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