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Commitments and contingent liabilities - Additional Information (Detail) - USD ($) $ in Thousands |  |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Oct. 18, 2017 | Mar. 24, 2017 | Dec. 05, 2014 | Dec. 31, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Nov. 10, 2017
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Operating leases, rental expense |  |  |  |  | $ 36,200 | $ 34,000 | $ 34,600 |
Current portion of allowance for doubtful accounts |  |  |  | $ 3,500 | 3,500 | 2,000 |  |
Accrued expenses |  |  |  | 96,853 | 96,853 | 65,149 |  |
Discontinued Operations |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Contingency reserve for litigation |  |  |  | 100 | $ 100 | 1,600 |  |
Minimum |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Time-frame over which the accrued amounts may be paid out, in years |  |  |  |  | P15Y |  |  |
Maximum |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Time-frame over which the accrued amounts may be paid out, in years |  |  |  |  | P20Y |  |  |
Accrued Liabilities |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Waste disposed accrued liability |  |  |  | 1,000 | $ 1,000 | 1,100 |  |
Contingency reserve for litigation |  |  |  | 3,800 | 3,800 | 2,500 |  |
Other Liability |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Waste disposed accrued liability |  |  |  | 5,800 | 5,800 | $ 5,800 |  |
Distributor vs Teleflex Medical Trading Company, Ltd. |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency, damages sought, value |  | $ 7,800 |  |  |  |  |  |
Distributor vs Teleflex Medical Trading Company, Ltd. Repurchase of Inventory |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency, damages sought, value |  | 14,900 |  |  |  |  |  |
Teleflex Medical Trading Company, Ltd. vs Distributor - Outstanding Receivables |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss contingency, damages sought, value |  | $ 9,300 |  |  |  |  |  |
Sales returns, goods |  |  |  | 11,900 |  |  |  |
Current portion of allowance for doubtful accounts |  |  |  | $ 9,300 | 9,300 |  |  |
Litigation settlement provision |  |  |  |  | $ 3,600 |  |  |
Parish of Calcasieu |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Accrued expenses |  |  |  |  |  |  |  | $ 5,000
Parish of Calcasieu | Judicial Ruling | Compensatory Damages |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Damages awarded to plaintiff |  |  | $ 100 |  |  |  |  |
Parish of Calcasieu | Judicial Ruling | Punitive Damages |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Damages awarded to plaintiff |  |  | $ 23,000 |  |  |  |  |
Parish of Calcasieu | Settled Litigation | Punitive Damages |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Damages awarded to plaintiff | $ 4,300 |  |  |  |  |  |  |

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