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Stockholders' Equity (Details 3) (USD $)	3 Months Ended		6 Months Ended
Stockholders' Equity (Details 3) (USD $)	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Reported share-based compensation
Allocated Share-based Compensation Expense	$ 589,691	$ 877,007	$ 1,347,662	$ 1,839,924
Cost of products sold [Member]
Reported share-based compensation
Allocated Share-based Compensation Expense	28,748	51,976	95,892	104,980
Sales, general and administrative expenses [Member]
Reported share-based compensation
Allocated Share-based Compensation Expense	426,314	649,566	973,364	1,372,745
Research and development expenses [Member]
Reported share-based compensation
Allocated Share-based Compensation Expense	$ 134,629	$ 175,465	$ 278,406	$ 362,199

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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