Stock Based Compensation (Tables)

6 Months Ended

Jun. 30, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

Non-cash employee compensation expense recognized in general and administrative expense in the statements of operations, with respect to our non-cash employee compensation plans are as follows:

	For the three months ended June 30,				For the six months ended June 30,
	2012		2011		2012		2011
Total stock compensation expense	$	1,125	$	879	$	3,704	$	2,220

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Fair values of options granted in the first six months of 2012 and 2011 were based on the assumptions noted in the following table:

	For the six months ended June 30,
	2012	2011
Expected volatility	57.11 to 87.50%	66.33 to 69.79%
Risk-free interest rate	0.18 to 0.89%	2.17 to 2.26%
Expected lives	4.1 to 9.5 years	5.6 to 8.5 years
Dividend yield	0%	0%

Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding [Table Text Block]

A summary of option activity under the Plan during the six months ended June 30, 2012:

	Options (‘000)		Weighted– Average Exercise price (Cdn$)	Weighted– Average Remaining Contractual Term (Years)	Aggregate intrinsic  value Cdn($000)
Outstanding as of December 31, 2011	8,539		3.18	7.0	95
Granted	4,862		1.97	6.9	—
Exercised	(78	)	1.16	—	81
Forfeited, canceled and expired	(948	)	2.90	6.9	—
Outstanding as of June 30, 2012	12,375		2.75	6.6	8
Exercisable as of June 30, 2012	8,046		3.01	6.1	8