Fair Value Measurements (Fair Value Inputs, Quantitative Information) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Contingent purchase price	$ 89,673	$ 96,957
Targanta [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Contingent purchase price	$ 6,012	$ 5,857
Targanta [Member] | Probability-adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	20.00%	20.00%
Discount rate	11.00%	11.00%
Incline [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Contingent purchase price	$ 25,900	$ 28,600
Incline [Member] | Probability-adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	67.00%	67.00%
Discount rate	18.00%	18.00%
Incline [Member] | Minimum [Member] | Probability-adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	64.00%	64.00%
Incline [Member] | Maximum [Member] | Probability-adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	72.00%	72.00%
Rempex [Member] | Commercial Milestones [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Contingent purchase price	$ 60,800	$ 63,000
Rempex [Member] | Commercial Milestones [Member] | Probability-adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	55.00%	56.00%
Rempex [Member] | Commercial Milestones [Member] | Minimum [Member] | Probability-adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	11.00%	11.00%
Discount rate	3.40%	3.60%
Rempex [Member] | Commercial Milestones [Member] | Maximum [Member] | Probability-adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	95.00%	95.00%
Discount rate	5.80%	6.00%
Rempex [Member] | Sales Milestone [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Contingent purchase price	$ 10,900	$ 10,300
Rempex [Member] | Sales Milestone [Member] | Risk-adjusted revenue simulation [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	25.00%	30.00%
Rempex [Member] | Sales Milestone [Member] | Minimum [Member] | Risk-adjusted revenue simulation [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	11.00%	11.00%
Discount rate	4.90%	5.50%
Rempex [Member] | Sales Milestone [Member] | Maximum [Member] | Risk-adjusted revenue simulation [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	63.00%	63.00%
Discount rate	6.00%	6.70%
Annovation [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Contingent purchase price	$ 16,000	$ 16,000
Annovation [Member] | Probability-adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	32.00%	31.00%
Annovation [Member] | Minimum [Member] | Probability-adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	9.00%	8.00%
Discount rate	3.80%	4.10%
Annovation [Member] | Maximum [Member] | Probability-adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	50.00%	50.00%
Discount rate	7.30%	8.20%