Restricted Cash	3 Months Ended
Mar. 31, 2013
Restricted Cash [Abstract]
Restricted Cash	(6) Restricted Cash As part of the Company’s lease arrangement for its office and laboratory facility, the Company is required to restrict cash for a security deposit. As of March 31, 2013, the restricted cash amounted to $311,000 held in certificates of deposit securing a line of credit for the lessor.

The entire disclosure for assets that are restricted in their use, generally by contractual agreements or regulatory requirements. This would include, but not limited to, a description of the restricted assets and the terms of the restriction.

No definition available.

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