Financial Instruments (Narrative) (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	10.00%	28.00%
Percentage of related revenue	20.00%
Amount exceeds to get related revenue for CyDex share holders	$ 15,000,000
Percentage of related revenue additional	10.00%
Aggregate CyDex-related revenue	$ 35,000,000
Minimum [Member] | Portion of Liability For Contingent Value Rights Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	1.00%
Maximum [Member] | Portion of Liability For Contingent Value Rights Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	5.00%