Subsequent Events - Additional Information (Detail) (Subsequent Event, USD $) In Millions, unless otherwise specified	0 Months Ended			1 Months Ended
	Jul. 01, 2014 Cmc Icos Biologics Inc	Jul. 01, 2014 Cmc Icos Biologics Inc Minimum	Jul. 01, 2014 Cmc Icos Biologics Inc Maximum	Jul. 31, 2014 Daiichi Sankyo and edoxaban	Jul. 31, 2014 Daiichi Sankyo and edoxaban Maximum
Subsequent Event [Line Items]
Upfront payment for agreement	$ 10.0			$ 15.0
Commercial supply (manufacturing services) agreement reservation payment	4.6
Commercial agreement fixed commitment amount	294.0			40.0
Commitment agreement description	The life of the Agreement from 2015 through 2021
Commitments for pre-work orders	15
Termination fees payment under obligation		5.0	30.0
Payments due upon the achievement of certain milestones associated with the progress of our Phase 3 study					$ 25.0