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Borrowings - Fair Value of Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value Measurements [Line Items]
Fair value of debt	$ 1,274,127	$ 1,545,781
Level 1
Fair Value Measurements [Line Items]
Fair value of debt	344,765	858,709
Level 2
Fair Value Measurements [Line Items]
Fair value of debt	$ 929,362	$ 687,072

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- Definition

Fair value measurements.

+ References

No definition available.

+ Details

Name:	tfx_FairValueMeasurementsLineItems
Namespace Prefix:	tfx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: