Subsequent Event (Details) (Subsequent Event [Member], USD $)	1 Months Ended
	Jul. 31, 2014
Subsequent Event [Member]
Subsequent Event [Line Items]
Milestone agreement value	$ 25,000,000.0
Proceeds from license fees received	6,000,000
Milestones receivable	19,000,000
Term of milestone agreement	2 years
Minimum milestone receivable	5,750,000.00
Maximum milestone receivable	$ 38,500,000.0