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Commitments and Contingencies (Details) (USD $) | Jun. 30, 2013 | Dec. 31, 2012
--- | --- | ---
Recorded Unconditional Purchase Obligation [Line Items] |  |
Purchase obligation, due in next twelve months | $ 769,000 | $ 0
Contractual Obligation, due in next twelve months | 8,510,000 |
Contractual obligation | 2,184,000 |
Clinical Research Study Obligations [Member] |  |
Recorded Unconditional Purchase Obligation [Line Items] |  |
Purchase obligation, due in next twelve months | 12,000,000 |
Purchase obligation | 3,650,000 |
Pre Clinical Research Study Obligations [Member] |  |
Recorded Unconditional Purchase Obligation [Line Items] |  |
Purchase obligation, due in next twelve months | 23,000 |
Minimum Purchase Obligation, Supply Agreement [Member] |  |
Recorded Unconditional Purchase Obligation [Line Items] |  |
Minimum purchase obligations, total | $ 850,000 |

X
- Definition Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments. + References No definition available. + Details
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X
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- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
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- Definition Minimum amount of purchase arrangement maturing in the next fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. + References No definition available. + Details
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- Definition Amount of the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25383-109308 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 47 -Paragraph 10 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 47 -Paragraph 6 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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