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Acquisitions - Purchase Price Allocation (Catheter Connections, Inc.) (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Business Acquisition [Line Items] |  |
Goodwill | $ 219,911 | $ 211,927
Catheter Connections, Inc. |  |
Business Acquisition [Line Items] |  |
Trade receivables | 952 |
Inventories | 2,244 |
Prepaid expenses | 181 |
Property and equipment | 1,472 |
Goodwill | 7,612 |
Total assets acquired | 38,361 |
Trade payables | (338) |
Accrued expenses | (23) |
Total liabilities assumed | 361 |
Net assets acquired, net of cash received of $1,327 | 38,000 |
Developed technology | Catheter Connections, Inc. |  |
Business Acquisition [Line Items] |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | 22,900 |
Customer Lists | Catheter Connections, Inc. |  |
Business Acquisition [Line Items] |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | 100 |
Trademarks | Catheter Connections, Inc. |  |
Business Acquisition [Line Items] |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | $ 2,900 |

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