Fair Value Measurements (Narrative) (Details) (USD $)	Sep. 30, 2014	Apr. 24, 2014 Sumavel DosePro [Member]	Aug. 06, 2014 DAVA Pharmaceuticals, Inc [Member]	Jun. 30, 2014 Maximum [Member] Sumavel DosePro [Member]	Aug. 06, 2014 Maximum [Member] DAVA Pharmaceuticals, Inc [Member]	Jun. 30, 2014 Minimum [Member] Sumavel DosePro [Member]	Sep. 30, 2014 Paladin Labs Inc. [Member]	Sep. 30, 2014 Loans Receivable [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Net asset value required to be maintained by money market funds (Per Unit)	1.00
Loans receivable from joint venture								$ 15,500,000
Equity Method Investments							22,700,000
Fair value of contractual obligation		$ 3,700,000	$ 4,800,000	$ 20,000,000.0	$ 25,000,000.0	$ 0