Commitments and Contingencies (Details) (Ontario Grant [Member], CAD)	1 Months Ended	6 Months Ended	42 Months Ended
	Jun. 30, 2011	Apr. 30, 2014	Apr. 30, 2014
Ontario Grant [Member]
Gain Contingencies [Line Items]
Grant amount	25,000,000
Grant period	November 1, 2010 to October 31, 2015
Annual disbursements	5,000,000
Benefit recorded to date		3,600,000	20,000,000
Grants receivable		3,600,000	3,600,000