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Financial Instruments (Details Textual) (USD $)
|
3 Months Ended | 12 Months Ended |
|---|---|---|
|
Mar. 31, 2013
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Dec. 31, 2012
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Discount rate | 24.00% | 28.00% |
| Percentage of related revenue | 20.00% | |
| Amount exceeds to get related revenue for CyDex share holders | $ 15,000,000 | |
| Percentage of related revenue additional | 10.00% | |
| Aggregate CyDex-related revenue | $ 35,000,000 | |
|
Minimum [Member] | Portion of Liability For Contingent Value Rights Company [Member]
|
||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Discount rate | 1.00% | |
|
Maximum [Member] | Portion of Liability For Contingent Value Rights Company [Member]
|
||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Discount rate | 5.00% |