Stock Based Compensation (Tables)

6 Months Ended

Jun. 30, 2012

Stock Based Compensation [Abstract]

Summary of stock options and stock option activity

	Options Outstanding							Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value (000’s)
	Options Available for  Grant		Number Outstanding			Weighted Average Exercise  Price per Share*
Available and outstanding at December 31, 2011		5,130,390		13,569,610		$	0.81
Granted		—		—			—
Exercised		181,848		(181,848	)		0.20
Forfeited		18,000		(18,000	)		0.57
Expired		500,000		(500,000	)		0.71
Available and outstanding at June 30, 2012		5,830,238		12,869,762		$	0.82		5.12	$	76
Exercisable at June 30, 2012				12,581,762		$	0.83		5.04	$	76
Vested or expected to vest at June 30, 2012				12,869,762		$	0.82		5.12	$	76

* Some of the options are granted with Canadian dollar exercise prices, and the weighted average prices reflect the U.S. dollar equivalent prices.

Fair value of stock options granted

	2012		2011
Expected dividend		—	0.0%
Risk-free interest rate		—	1.9%-2.6%
Expected volatility*		—	67.0%-67.7%
Expected life (in years)		—	5.5

* For the six months ended June 30, 2011, volatility was estimated based on combining the Company’s historical volatility with the historical volatilities of certain other comparable exploration stage mining companies.