Stock-Based Compensation Plans (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended			9 Months Ended				3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014 Employee Stock Option Plan [Member]	May 31, 2014 Employee Stock Option Plan [Member]	Sep. 30, 2014 Employee Stock Option Plan [Member] Minimum [Member]	Sep. 30, 2014 Employee Stock Option Plan [Member] Maximum [Member]	Sep. 30, 2014 Non-Employee Director Stock Option Plan [Member]	Sep. 30, 2014 Employee Stock Purchase Plan [Member]	Sep. 30, 2014 Restricted Stock Plan [Member]	Sep. 30, 2014 Restricted Stock Plan [Member]	Sep. 30, 2014 Equity Incentive Plans [Member] plan	Sep. 30, 2014 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	$ 4,778,693	$ 13,391,738
Compensation cost capitalized as part of inventory		239,927
Number if shares available for grant (in shares)				12,000,000
Option vesting period					1 year	5 years	6 months
Option expiration period					5 years	7 years	10 years
Unrecognized compensation cost			27,693,859				0
Options granted (in shares)							133,000
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									11,913,757	11,913,757
Amortization expense									$ 644,043	$ 2,178,261