Commitments, Contingencies and Other Matters (Details) (USD $) In Thousands, unless otherwise specified					0 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Patent Infringement Claim Brought by the Curators of the University of Missouri [Member]	Dec. 31, 2013 Patent Infringement Claim Brought by the Curators of the University of Missouri [Member]	Jul. 17, 2013 TWi Pharmaceuticals [Member] claim	Jan. 23, 2014 Eli Lilly [Member] claim	Jun. 26, 2014 Eli Lilly, Daiichi Sankyo, and Ube Industries [Member] claim	Jan. 24, 2014 Eli Lilly, Daiichi Sankyo, and Ube Industries [Member] claim	Jun. 02, 2014 AWP Claim Brought by State of Illinois [Member]
Commitments Contingencies and Other Matters [Line Items]
Accrued legal settlements	$ 9,000	$ 41,367	$ 9,000	$ 9,000
Claims dismissed					2		1
Loss Contingency, New Claims Filed, Number						2		2
Litigation settlement amount									$ 28,500