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4. Goodwill and other Purchased Intangible Assets Intangible Assets, Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Feb. 15, 2017 | Jan. 06, 2016
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  | $ 509,000 | $ 443,200 |  |  |
Future Amortization Expense, Year One |  | 28,400 |  |  |  |
Future Amortization Expense, Year Two |  | 25,000 |  |  |  |
Future Amortization Expense, Year Three |  | 22,900 |  |  |  |
Future Amortization Expense, Year Four |  | 22,100 |  |  |  |
Future Amortization Expense, Year Five |  | 18,000 |  |  |  |
Finite-Lived Intangible Assets, Amortization Expense, after Year Five |  | 57,700 |  |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |  |  |
Accumulated Amortization |  | (334,900) | (281,600) |  |  |
Net Carrying Amount |  | 174,100 | 161,600 |  |  |
Amortization [Abstract] |  |  |  |  |  |
Amortization expense |  | 30,800 | 35,200 | $ 36,500 |  |
Impairment losses on goodwill and long-lived assets |  | 11,506 | 62,305 | $ 0 |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) |  |  | 46,400 |  |  |
Intangible Assets, Net (Excluding Goodwill) |  | 174,113 | 161,609 |  |  |
Customer Relationships [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  | 92,300 | 84,400 |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |  |  |
Accumulated Amortization |  | (64,400) | (52,800) |  |  |
Net Carrying Amount |  | 27,900 | 31,600 |  |  |
Know how [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  | 194,900 | 182,600 |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |  |  |
Accumulated Amortization |  | (157,900) | (136,900) |  |  |
Net Carrying Amount |  | 37,000 | 45,700 |  |  |
Developed Technology Rights [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  | 133,300 | 125,900 |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |  |  |
Accumulated Amortization |  | (70,300) | (56,300) |  |  |
Net Carrying Amount |  | 63,000 | 69,600 |  |  |
Licensing Agreements [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  | 76,700 | 39,000 |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |  |  |
Accumulated Amortization |  | (36,000) | (30,600) |  |  |
Net Carrying Amount |  | 40,700 | 8,400 |  |  |
Trade Names [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  | 3,900 | 3,500 |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |  |  |
Accumulated Amortization |  | (3,000) | (2,500) |  |  |
Net Carrying Amount |  | 900 | 1,000 |  |  |
Noncompete Agreements [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  | 7,900 | 7,800 |  |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |  |  |
Accumulated Amortization |  | (3,300) | (2,500) |  |  |
Net Carrying Amount |  | $ 4,600 | $ 5,300 |  |  |
Minimum [Member] | Customer Relationships [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  | 1 year | 1 year |  |  |
Minimum [Member] | Know how [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  | 1 year | 1 year |  |  |
Minimum [Member] | Developed Technology Rights [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  | 1 year | 3 years |  |  |
Minimum [Member] | Licensing Agreements [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  | 1 year | 1 year |  |  |
Minimum [Member] | Trade Names [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  | 1 year | 4 years |  |  |
Minimum [Member] | Noncompete Agreements [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  | 1 year | 2 years |  |  |
Minimum [Member] | Other Intangible Assets [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  | 0 years | 0 years |  |  |
Maximum [Member] | Customer Relationships [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  | 7 years | 8 years |  |  |
Maximum [Member] | Know how [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  | 8 years | 9 years |  |  |
Maximum [Member] | Developed Technology Rights [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  | 12 years | 12 years |  |  |
Maximum [Member] | Licensing Agreements [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  | 12 years | 9 years |  |  |
Maximum [Member] | Trade Names [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  | 6 years | 8 years |  |  |
Maximum [Member] | Noncompete Agreements [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  | 8 years | 9 years |  |  |
Maximum [Member] | Other Intangible Assets [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  | 0 years | 0 years |  |  |
RainDance Technologies, Inc. [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  |  |  | $ 37,600 |
RainDance Technologies, Inc. [Member] | Developed Technology Rights [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  |  |  | 1,000 |
RainDance Technologies, Inc. [Member] | Licensing Agreements [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  |  |  | 36,400 |
RainDance Technologies, Inc. [Member] | Trade Names [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  |  |  | $ 200 |
Analytical Flow Cytometer Platform [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  |  |  |  | $ 32,700
Analytical Flow Cytometer Platform [Member] | Developed Technology Rights [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-lived Intangible Assets Acquired | $ 29,700 |  |  |  |  |
Analytical Flow Cytometer Platform [Member] | Noncompete Agreements [Member] |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-lived Intangible Assets Acquired | $ 3,000 |  |  |  |  |

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