ACCRUED EXPENSES (Tables)

12 Months Ended

Dec. 31, 2017

Accrued Liabilities Current [Abstract]

Accrued Expenses

Accrued expenses consist of the following at December 31, 2017 and 2016, in thousands:

	At December 31,
	2017		2016
Compensation and related	$	33,826	$	13,689
Clinical trial and manufacturing		20,004		11,756
Consulting and professional services		7,276		2,788
Pre-clinical		239		1,257
Other		10,858		12,628
	$	72,203	$	42,118