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Acquisition (Narratives) (Details) - USD ($) $ in Millions |  | 11 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Business Acquisition [Line Items] |  |  |  |
Business Acquisition, Effective Date of Acquisition |  |  | Jan. 31, 2018 |
Acquisition purchase price | $ 71.1 |  |  |
Business Acquisition, Description of Acquired Entity |  |  | DSI, a St. Paul, Minnesota-based life science research company, is a recognized leader in physiologic monitoring focused on delivering preclinical products, systems, services and solutions to its customers. |
Business Acquisition Direct Acquisition Costs In Income Statement |  | $ 3.4 | $ 3.4 | $ 0.0
The results of operations for DSI: |  |  |  |
Revenue of Acquiree since Acquisition Date |  | 42.6 |  |
Earnings or Loss of Acquiree since Acquisition Date |  | 1.8 |  |
Busniess combination purchase accounting inventory fair value step up amortization |  | 3.8 |  |
Intangible asset amortization expense |  | 4.0 |  |
Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract] |  |  |  |
Purchase price adjustments, decrease to other long term liabilities |  |  | (1.6) |
Purchase price adjustments, increase to deferred tax liabilities |  |  | 4.5 |
Purchase price adjustments, increase in net working capital |  |  | 0.6 |
Goodwill Purchase Accounting Adjustments |  |  | $ 3.1 |
Data Sciences International, Inc. (DSI) [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  | 9 years 3 months 18 days |
The results of operations for DSI: |  |  |  |
Additional depreciation related to step up of fair value, PPE |  |  | $ 0.6 |
Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract] |  |  |  |
Increase, Property, Plant, and Equipment |  |  | 1.5 |
Increase, Accounts Payable and Accrued Liabiities |  | $ 0.6 | $ 0.6 |
Trade Names [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  | 7 years 8 months 12 days |
Trade Names [Member] | Data Sciences International, Inc. (DSI) [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  | 9 years 4 months 24 days |
Developed Technology [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  | 7 years 1 month 6 days |
Developed Technology [Member] | Data Sciences International, Inc. (DSI) [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  | 8 years 2 months 12 days |
Customer Relationships [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  | 10 years 7 months 6 days |
Customer Relationships [Member] | Data Sciences International, Inc. (DSI) [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  | 12 years 4 months 24 days |
In-process research and development [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  | 7 years 3 months 18 days |
In-process research and development [Member] | Data Sciences International, Inc. (DSI) [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Finite-Lived Intangible Assets, Weighted Average Useful Life |  |  | 7 years 4 months 24 days |

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