Nature and Continuance of Operations - Additional Information (Detail)	1 Months Ended		3 Months Ended		6 Months Ended		8 Months Ended	12 Months Ended															194 Months Ended			1 Months Ended
	Jun. 06, 2011 USD ($)	Jun. 16, 2010 CAD	Jun. 30, 2012 CAD	Jun. 30, 2011 CAD	Jun. 30, 2012 CAD	Jun. 30, 2011 CAD	Dec. 31, 1996 CAD	Dec. 31, 2011 CAD	Dec. 31, 2010 CAD	Dec. 31, 2009 CAD	Dec. 31, 2008 CAD	Dec. 31, 2007 CAD	Dec. 31, 2006 CAD	Dec. 31, 2005 CAD	Dec. 31, 2004 CAD	Dec. 31, 2003 CAD	Dec. 31, 2002 CAD	Dec. 31, 2001 CAD	Dec. 31, 2000 CAD	Dec. 31, 1999 CAD	Dec. 31, 1998 CAD	Dec. 31, 1997 CAD	Jun. 30, 2012 CAD	Mar. 31, 2012 CAD	Mar. 31, 2011 CAD	Jul. 06, 2012 Subsequent Event Issuance of Equity USD ($)
Organization and Nature of Operations [Line Items]
Net loss			(4,227,245)	(3,300,981)	(7,299,639)	(6,015,264)	(114,800)	(15,527,179)	(5,826,972)	(2,642,176)	(16,165,394)	(10,666,106)	(7,241,228)	(4,402,715)	(2,994,702)	(1,352,679)	(1,657,651)	2,427,256	(4,718,044)	(2,378,063)	(1,943,674)	(2,027,672)	(84,921,393)
Accumulated deficit			(84,921,393)		(84,921,393)			(77,621,754)															(84,921,393)
Cash and cash equivalents			3,672,050	15,258,954	3,672,050	15,258,954		10,191,069	6,062,816														3,672,050	6,349,527	7,512,983
Shares issued, shares		11,078,666																								12,261,562
Shares issued, par value	$ 1.60	0.60																								$ 1.28
Proceeds from units issued		6,647,199																								$ 15,694,799