Stock-Based Compensation Plans (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended				9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2012 Employee Stock Option Plan [Member]	Sep. 30, 2012 Non-Employee Director Stock Option Plan [Member]	May 31, 2012 Non-Employee Director Stock Option Plan [Member]	Sep. 30, 2012 Restricted Stock Plan [Member]	Sep. 30, 2012 Employee Stock Option Plan [Member] Minimum [Member]	Sep. 30, 2012 Employee Stock Option Plan [Member] Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense for share-based payments	$ 3,811,242	$ 10,770,822
Compensation cost capitalized as part of inventory		159,359
Option vesting period				6 months			1 year	5 years
Option expiration period				10 years			3 years	7 years
Unrecognized compensation cost			21,638,194	85,680
Options granted				42,000	500,000	2,000,000
Shares approved			1,200,000
ESPP discount rate			85.00%
ESPP discount rate recognized as compensation expense			15.00%
Restricted period, maximum, in years						10 years
Unearned stock-based compensation						8,075,014
Amortization expense	$ 559,046	$ 1,591,171