CONDENSED CONSOLIDATED INTERIM STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net loss	$ (9,184)	$ (10,681)	$ (18,483)	$ (21,372)
Unrealized gains (losses) on marketable securities Unrealized holding gains (losses) during period	(190)	(210)	(252)	109
Reclassification adjustment for losses included in net loss (note 11)	426	0	426	0
Net unrealized gain (loss), net of $(6), $44, $4 and $(6) tax (expense) recovery	236	(210)	174	109
Foreign currency translation adjustments	1,544	8,375	(30,216)	(8,712)
Other comprehensive income (loss)	1,780	8,165	(30,042)	(8,603)
Comprehensive loss	$ (7,404)	$ (2,516)	$ (48,525)	$ (29,975)