Stock-Based Compensation Plans (Narrative) (Details) (USD $)	3 Months Ended	6 Months Ended		6 Months Ended			1 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013	Jun. 30, 2013 Employee Stock Option Plan [Member]	Jun. 30, 2013 Employee Stock Option Plan [Member] Minimum [Member]	Jun. 30, 2013 Employee Stock Option Plan [Member] Maximum [Member]	Jun. 30, 2013 Non-Employee Director Stock Option Plan [Member]	May 31, 2013 Employee Stock Purchase Plan [Member]	Jun. 30, 2013 Restricted Stock Plan [Member]	Jun. 30, 2013 Restricted Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense for share-based payments	$ 3,544,677	$ 6,733,888
Compensation cost capitalized as part of inventory		193,600
Option vesting period				1 year	5 years	6 months
Option expiration period				2 years	7 years	10 years
Unrecognized compensation cost			21,406,740			285,566
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								9,177,978	9,177,978
Amortization expense								$ 683,215	$ 1,344,067