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Acquisitions - Purchase Price Allocation (Vascular Access Technologies, Inc.) (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | May 01, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill | $ 234,043 |  | $ 211,927
Vascular Access Technologies, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Goodwill |  | $ 4,170 |
Deferred tax liabilities |  | (3,170) |
Total assets acquired |  | 9,900 |
Preliminary Allocation | Vascular Access Technologies, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Goodwill |  | 4,323 |
Deferred tax liabilities |  | (3,073) |
Total assets acquired |  | 9,900 |
Adjustment | Vascular Access Technologies, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Goodwill |  | (153) |
Deferred tax liabilities |  | (97) |
Total assets acquired |  | 0 |
Developed Technology Rights | Vascular Access Technologies, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Intangibles |  | 7,800 |
Developed Technology Rights | Preliminary Allocation | Vascular Access Technologies, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Intangibles |  | 7,800 |
Developed Technology Rights | Adjustment | Vascular Access Technologies, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Intangibles |  | 0 |
In-process technology | Vascular Access Technologies, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Intangibles |  | 1,100 |
In-process technology | Preliminary Allocation | Vascular Access Technologies, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Intangibles |  | 850 |
In-process technology | Adjustment | Vascular Access Technologies, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Intangibles |  | $ 250 |

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