ACCRUED EXPENSES (Tables)

12 Months Ended

Dec. 31, 2016

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 December 31, 2016		As of December 31, 2015
	(in thousands)
Accrued clinical and preclinical costs	$	10,033	$	9,587
Accrued employee compensation costs		8,748		8,189
Accrued contract manufacturing costs		4,673		4,830
Accrued professional fees		2,799		4,258
Accrued research costs		1,186		629
Other		3,577		1,560
Total accrued expenses	$	31,016	$	29,053