ACCRUED EXPENSES (Tables)

9 Months Ended

Sep. 30, 2017

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 September 30, 2017		As of December 31, 2016
	(in thousands)
Accrued contract manufacturing costs	$	13,438	$	4,673
Accrued clinical and preclinical costs		13,123		10,033
Accrued employee compensation costs		10,560		8,748
Accrued professional fees		5,520		2,799
Product revenue related reserves		4,095		305
Accrued income taxes		3,493		—
Accrued BioMarin royalties		2,289		—
Accrued research costs		317		1,186
Other		2,917		3,272
Total accrued expenses	$	55,752	$	31,016