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2. Fair Value Measurements 2. Contingent Consideration (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 22 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2018 | Mar. 31, 2018 | Sep. 30, 2018 | Sep. 30, 2018 | Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value |  | $ 8.1 |  | $ 8.1 | $ 8.1 | $ 16.7
Analytical Flow Cytometer Platform [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Contingent consideration milestone payments |  | (0.8) | $ (1.3) | (2.1) |  |
Business Combination, Contingent Consideration, Liability |  | $ 8.1 |  | 8.1 | 8.1 |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances |  |  |  | $ (6.5) | $ (12.5) |
Sales milestone percentage of annual invoices [Member] | Analytical Flow Cytometer Platform [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Business Acquisition, Contingent Consideration, Potential Percentage Payout |  | 39.00% |  | 39.00% | 39.00% |
Market Price of Risk [Member] | Analytical Flow Cytometer Platform [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Discount Rate |  |  |  | 11.30% |  |
Projected Volatility of Growth Rate [Member] | Analytical Flow Cytometer Platform [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Discount Rate |  |  |  | 4.90% |  |
Sales milestone percentage of annual invoices low [Member] | Analytical Flow Cytometer Platform [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Business Acquisition, Contingent Consideration, Potential Percentage Payout |  | 20.00% |  | 20.00% | 20.00% |
Sales milestone minimum amount [Member] | Analytical Flow Cytometer Platform [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low |  | $ 0.0 |  | $ 0.0 | $ 0.0 |
Fair Value, Measurements, Recurring [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability | [1] | 8.1 |  | 8.1 | 8.1 | 16.7
Other Noncurrent Liabilities [Member] | Fair Value, Measurements, Recurring [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability |  | 5.0 |  | 5.0 | 5.0 | 14.0
Other Current Liabilities [Member] | Fair Value, Measurements, Recurring [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability |  | $ 3.1 |  | $ 3.1 | $ 3.1 | $ 2.7
[1] | Contingent consideration liability is included in the following accounts in the Condensed Consolidated Balance Sheets (in millions):
| September 30, 2018 |  | December 31, 2017
Other current liabilities | $ | 3.1 |  |  | $ | 2.7 |
Other long-term liabilities | 5.0 |  |  | 14.0 |
Total | $ | 8.1 |  |  | $ | 16.7 |

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