Accrued Liabilities

3 Months Ended

Mar. 31, 2014

Payables and Accruals [Abstract]

Accrued Liabilities

ACCRUED LIABILITIES

Accrued liabilities consisted of the following (in thousands):

	March 31, 2014		December 31, 2013
Accrued compensation and related liabilities	$	5,443	$	7,959
Accrued interest	900		2,166
Accrued professional fees	657		350
Accrued costs under the Collaboration Agreement	1,212		2,629
Other accrued liabilities	1,837		1,901
Total accrued liabilities	$	10,049	$	15,005