ACCRUED EXPENSES (Tables)

6 Months Ended

Jun. 30, 2015

Payables and Accruals [Abstract]

Summary of Accrued Expenses

The following table summarizes the Company’s accrued expenses for each of the periods indicated:

	As of June 30, 2015		As of December 31, 2014
	(in thousands)
Accrued employee compensation costs	$	4,955	$	6,170
Accrued clinical and preclinical costs		4,845		3,471
Accrued professional fees		1,924		3,403
Accrued contract manufacturing costs		1,876		3,271
Accrued research costs		579		311
Accrued facility-related costs		270		300
Other		735		440
Total accrued expenses	$	15,184	$	17,366