Consolidated Statements of Operations and Comprehensive (Loss) Income (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Expenses
Research and development	$ 18,509	$ 24,578	$ 23,043
Selling, general and administrative	6,986	15,082	17,059
Depreciation	964	1,165	1,292
Restructuring charges (Note 9)	2,031	13,850	0
Total expenses	28,490	54,675	41,394
Operating loss	(28,490)	(54,675)	(41,394)
Investment and other income
Net foreign exchange (losses) gains	(32)	(8)	(148)
Interest income	211	244	673
Fair value change in contingent consideration (Notes 10, 13)	2,865	8,215	10,078
Other gains	207	60	613
Total investment and other income	3,251	8,511	11,216
Loss from continuing operations before income taxes	(25,239)	(46,164)	(30,178)
(Provision for) recovery of income taxes	(599)	3,900	(1,201)
Loss from continuing operations	(25,838)	(42,264)	(31,379)
Income from discontinued operations, net of income taxes (Note 12)	967	87,962	963
Net (loss) income and comprehensive (loss) income	$ (24,871)	$ 45,698	$ (30,416)
Basic and diluted net (loss) income per common share (Note 14)
Continuing operations	$ (0.51)	$ (0.84)	$ (0.63)
Discontinued operations	$ 0.02	$ 1.75	$ 0.02
Net (loss) income per common share	$ (0.49)	$ 0.91	$ (0.61)
Weighted average number of common shares outstanding (in thousands) (Note 14)
Basic and diluted	50,909	50,112	50,105