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Stock Option Plans (Tables)

9 Months Ended

Sep. 30, 2012

Stock Option Plans [Abstract]

Stock option activity

Options granted under the Plans vest as determined by the Company's Compensation and Stock Option Committee and expire over varying terms, but not more than ten years from the date of grant. Stock option activity for the nine month period ended September 30, 2012 is as follows:

	Stock Option Activity under the Plans
	Stock Options		Weighted Average Exercise Price			Weighted Average Remaining Life (Years)
Outstanding at December 31, 2011	4,129,749		$	5.09			6.38
Granted	1,203,452			3.81
Expired	(400,000	)		4.95
Forfeited	(99,148	)		4.98
Outstanding at September 30, 2012	4,834,053			4.78			7.11

Assumptions used to determine the fair value of stock options

The assumptions used in the option pricing model to determine the fair value of stock options awarded to employees are as follows:

	Nine Months ended September 30,
	2012			2011
Dividend yield	None			None
Expected volatility	77.37% - 84.47%			72.16% - 75.35%
Weighted average volatility	79.87%			73.62%
Risk-free interest rates	0.78% - 1.49%			1.45% - 3.11%
Expected life (in years)	6.0			5.0 - 6.0

Restricted stock activity

Restricted stock activity for the nine month period ended September 30, 2012 is as follows:

		Restricted Stock Activity
		Restricted Stock				Weighted Average Grant Date Fair Value
Non-vested at December 31, 2011			193,532				5.84
Granted			428,920				2.84
Vested			(91,910	)			5.85
Forfeited			(15,431	)			4.19
Non-vested at September 30, 2012			515,111				3.38

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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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