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Equity Plans and Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2012

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

Share-based compensation cost by line item

The share-based compensation expense recognized in the Condensed Statements of Operations was as follows:



	For the three months ended June 30,				For the six months ended June 30,
	2012		2011		2012		2011
Share-based compensation cost included in:
Research and development	$	68,012	$	40,951	$	170,177	$	227,042
Selling, general and administrative	133,334		248,367		381,511		874,250
Total share-based compensation cost	$	201,346	$	289,318	$	551,688	$	1,101,292

Share-based compensation cost by award type

The following table presents share-based compensation expense by type:



	For the three months ended June 30,				For the six months ended June 30,
	2012		2011		2012		2011
Type of Award:
Stock Options	$	84,389	$	92,169	$	274,668	$	629,962
Restricted Stock Units and Awards	116,957		197,149		277,020		471,330
Total share-based compensation cost	$	201,346	$	289,318	$	551,688	$	1,101,292

Share-based compensation fair value assumptions

Fair value was calculated using the Black-Scholes Model with the following assumptions:



	For the six months ended June 30,
	2012		2011
Expected volatility	103	%	98	%
Risk free interest rate	1	%	3	%
Expected dividends	—		—
Expected life (in years)	5.2		6.3

- Definition

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

+ References+ Details

- Definition

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

+ References+ Details