Stock-Based Compensation Plans (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended		9 Months Ended			1 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013 Employee Stock Option Plan [Member]	Sep. 30, 2013 Employee Stock Option Plan [Member] Minimum [Member]	Sep. 30, 2013 Employee Stock Option Plan [Member] Maximum [Member]	Sep. 30, 2013 Non-Employee Director Stock Option Plan [Member]	May 31, 2013 Employee Stock Purchase Plan [Member]	Sep. 30, 2013 Restricted Stock Plan [Member]	Sep. 30, 2013 Restricted Stock Plan [Member]	Sep. 30, 2013 Equity Incentive Plans [Member] plan	Sep. 30, 2013 Stock Options [Member] plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of plans (in plans)										4	2
Compensation expense for share-based payments	$ 3,795,626	$ 10,529,514
Compensation cost capitalized as part of inventory		203,872
Option vesting period				1 year	5 years	6 months
Option expiration period				2 years	7 years	10 years
Unrecognized compensation cost			23,234,157			96,540
Options granted (in shares)						84,000
Shares approved (in shares)							1,000,000
ESPP discount rate							85.00%
ESPP discount rate recognized as compensation expense							15.00%
Options granted (in shares)								2,000,000	2,000,000
Restricted period, maximum, in years									10 years
Unearned stock-based compensation								9,867,574	9,867,574
Amortization expense								$ 654,683	$ 1,998,750