Fair Value Measurements (Level 3 Contingent Purchase Price) (Details) - Contingent Purchase Price Liability [Member] - Fair Value, Measurements, Recurring [Member] - Significant Unobservable Inputs (Level 3) [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 118,571	$ 207,160	$ 123,757	$ 351,134
Fair value of contingent purchase price with respect to Annovation as of February 2, 2015	0	0	0	18,000
Payments	(1,564)	(3,600)	(8,811)	(179,250)
Fair value adjustments to contingent purchase prices included in net income (loss)	12,403	747	14,464	14,423
Balance at end of period	$ 129,410	$ 204,307	$ 129,410	$ 204,307