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Accrued Liabilities
9 Months Ended
Sep. 30, 2015
Payables and Accruals [Abstract]  
Accrued Liabilities
ACCRUED LIABILITIES
Accrued liabilities consisted of the following (in thousands):
 
September 30,
2015
 
December 31,
2014
Accrued compensation and related liabilities
$
6,178

 
$
6,956

Accrued interest
4,439

 
3,495

Accrued professional fees
282

 
417

Accrued restructuring costs

 
1,348

Accrued costs under the Collaboration Agreement
806

 
476

Other accrued liabilities
468

 
1,387

Total accrued liabilities
$
12,173

 
$
14,079