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2. Acquisitions (Details) (USD $) In Millions, unless otherwise specified | 6 Months Ended |  | 6 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2012 | Jan. 18, 2012 Portland [Member] | Jun. 30, 2012 QuantaLife [Member] | Oct. 04, 2011 QuantaLife [Member]
Business Acquisition [Line Items] |  |  |  |
Business Acquisition, Cost of Acquired Entity, Purchase Price |  | $ 12.5 |  | $ 179.4
Business Acquisition, Purchase Price Allocation, Net Tangible Assets |  | 6.3 |  | (20.8)
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets |  | 5.1 |  | 94.7
Business Acquisition, Purchase Price Allocation, Goodwill Amount |  | 1.1 |  | 105.5
Employment agreement |  | 2.0 |  |
Business Acquisition, Cost of Acquired Entity, Cash Paid |  |  |  | 150.3
Purchase Price Holdback Consideration |  |  |  | 5.0
Business Acquisition, Contingent Consideration, at Fair Value |  |  |  | 24.1
Business Acquisition, Contingent Consideration, Potential Cash Payment |  |  | 45 | 48
Goodwill, Purchase Accounting Adjustments | $ (0.6) |  | $ (0.6) |

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