Accounts Payable and Accrued Expenses (Tables)

12 Months Ended

Dec. 31, 2012

Accounts Payable and Accrued Expenses [Abstract]

Schedule of accounts payable and accrued expenses

The carrying value of our accounts payable and accrued expenses approximates fair value, as it represents amounts due to vendors and employees, which will be satisfied within one year. Accounts payable and accrued expenses as of December 31, 2012 and 2011, consisted of the following:

	2012		2011
Accrued consulting and clinical trial costs	$	2,193	$	1,637
Accrued payroll and related costs		1,552		3,149
Restructuring accrual		813		731
Legal and professional fees		774		371
Accounts payable		229		309
Other		79		134
Total	$	5,640	$	6,331