Fair Value Measurements - Level 3 Inputs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Contingent purchase price	$ 82,289	$ 96,957
Targanta [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Contingent purchase price	$ 5,857	$ 5,857
Targanta [Member] | 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	$ 1,269	$ 28,600
Incline [Member] | Adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	5.00%	67.00%
Discount rate	18.00%	18.00%
Incline [Member] | Minimum [Member] | Adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success		64.00%
Incline [Member] | Maximum [Member] | Adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success		72.00%
Rempex [Member] | Event-based milestones [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Contingent purchase price	$ 95,800	$ 63,000
Rempex [Member] | Event-based milestones [Member] | Adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	79.00%	56.00%
Rempex [Member] | Event-based milestones [Member] | Minimum [Member] | Adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	18.00%	11.00%
Discount rate	5.20%	3.60%
Rempex [Member] | Event-based milestones [Member] | Maximum [Member] | Adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	95.00%	95.00%
Discount rate	8.50%	6.00%
Rempex [Member] | Sales-based milestones [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Contingent purchase price	$ 20,300	$ 10,300
Rempex [Member] | Sales-based milestones [Member] | Adjusted revenue simulation [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	56.00%	30.00%
Rempex [Member] | Sales-based milestones [Member] | Minimum [Member] | Adjusted revenue simulation [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	16.00%	11.00%
Discount rate	6.60%	5.50%
Rempex [Member] | Sales-based milestones [Member] | Maximum [Member] | Adjusted revenue simulation [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	65.00%	63.00%
Discount rate	8.20%	6.70%
Annovation [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Contingent purchase price	$ 14,063	$ 16,000
Annovation [Member] | Adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	34.00%	31.00%
Annovation [Member] | Minimum [Member] | Adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	9.00%	8.00%
Discount rate	6.00%	4.10%
Annovation [Member] | Maximum [Member] | Adjusted discounted cash flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Probability of success	50.00%	50.00%
Discount rate	10.00%	8.20%