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Stockholders Equity (Tables)

12 Months Ended

Dec. 31, 2012

Stock option activity under share-based compensation plans

A summary of option transactions for all of the Company's stock options during the years ended December 31, 2012, 2011 and 2010:

	Number of Stock Options			Weighted Average Exercise Price
Outstanding at January 1, 2010		1,966,965			0.73
Granted		-			-
Exercised		-			-
Expired/cancelled		(16,029	)		5.23
Outstanding at December 31, 2010		1,950,936			0.69
Granted		1,476,279			0.04
Exercised		(2,782,435	)		0.15
Assumed in reverse merger		180,718			19.54
Expired/cancelled		(644,780	)		1.32
Outstanding at December 31, 2011		180,718		$	19.54
Granted		739,000			15.87
Exercised		(10,048	)	$	6.67
Expired/cancelled		(11,129	)	$	20.25
Outstanding and Exercisable at December 31, 2012		898,541		$	16.65

Schedule of outstanding and exercisable options

The outstanding and exercisable options at December 31, 2012, have a range of exercise prices and associated weighted remaining contractual life and weighted average exercise price, as follows:

Options Range of Exercise Prices		Outstanding Number of Shares		Weighted Average Remaining Contractual Life (years)		Weighted Average Exercise Price		Exercisable Number of Shares		Exercisable Weighted Avg. Exercise Price
$	0 - $15.00		535,956		9.04	$	13.51		45,956	$	8.27
$	15.01 - $30.00		345,400		9.12	$	18.79		115,400	$	16.37
$	30.01 - $45.00		2,169		5.02	$	39.41		2,169	$	39.41
$	45.01 - $60.00		3,563		3.97	$	47.07		3,563	$	47.07
$	60.01 - up		11,453		1.50	$	85.78		11,453	$	85.78
Total			898,541		8.94	$	16.65		178,541	$	19.63

Schedule of outstanding options

The outstanding options will expire, as follows:

Year Ending	Number of Shares		Weighted Average Exercise Price		Exercise Price
2013		4,238	$	72.33	$	64.26 - $97.44
2014		2,499	$	102.48	$	102.48
2015		2,499	$	102.90	$	102.90
2016		2,634	$	69.48	$	48.72 - $93.66
2017 and later		886,671	$	15.89	$	5.70 - $47.88
		898,541	$	16.65	$	5.70 - $102.90

Weighted average assumptions used to estimate fair value of stock options

The Company uses the Black-Scholes option-pricing model to estimate fair value of grants of stock options with the following weighted average assumptions:

	Year Ended December 31,
	2012			2011			2010
Risk-free interest rate		1.2	%		1.76	%		N/A
Volatility		85.53	%		61.52	%		N/A
Expected dividend yield		0	%		0	%		N/A
Expected life	5 years			5 years				N/A
Estimated forfeiture rate		0	%		0	%		N/A

Summary of warrant transactions

A summary of warrant transactions for the years ended December 31, 2012 and 2011 is as follows:

	Number of Warrants			Weighted Average Exercise Price
Outstanding at December 31, 2010		-		$	-
Issued		-			-
Assumed in reverse merger		1,067,240			19.98
Exercised		-			-
Expired/cancelled		-			-
Outstanding at December 31, 2011		1,067,240			19.98
Issued		25,000			20.00
Exercised		(17,756	)		7.50
Expired/cancelled		(11,216	)		47.04
Outstanding at December 31, 2012		1,063,268		$	19.91

Summary of warrant transactions expiration period

If not previously exercised, the outstanding warrants will expire as follows:

Year Ending December 31,	Number of Warrants		Weighted Average Exercise Price

2013		4,589	$	18.48
2014		-		-
2015		32,250		17.19
2016		1,026,429		20.00
		1,063,268	$	19.91

- Definition

Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

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- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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