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Stockholders' Equity (Details 3) (USD $)	3 Months Ended		9 Months Ended
Stockholders' Equity (Details 3) (USD $)	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Reported share-based compensation
Allocated Share-based Compensation Expense	$ 849,388	$ 693,520	$ 2,197,050	$ 2,533,444
Cost of products sold [Member]
Reported share-based compensation
Allocated Share-based Compensation Expense	38,085	30,238	133,977	135,217
Sales, general and administrative expenses [Member]
Reported share-based compensation
Allocated Share-based Compensation Expense	657,870	518,513	1,631,234	1,891,258
Research and development expenses [Member]
Reported share-based compensation
Allocated Share-based Compensation Expense	$ 153,433	$ 144,769	$ 431,839	$ 506,969

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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