|
Inventory (Details) (USD $)
|
12 Months Ended | 12 Months Ended | |
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2013
|
Dec. 31, 2013
BARDA Contract
course
|
|
| Inventory [Line Items] | |||
| Number of courses delivered and accepted | 787,000 | ||
| Work in process | $ 17,641,922 | $ 6,152,198 | |
| Finished goods | 0 | 14,363,151 | |
| Inventory | 17,641,922 | 20,515,349 | |
| Inventory write-downs | $ 500,000 |