ACCRUED EXPENSES

6 Months Ended

Jun. 30, 2020

Payables And Accruals [Abstract]

ACCRUED EXPENSES

10. ACCRUED EXPENSES

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

	As of June 30, 2020		As of December 31, 2019
	(in thousands)
Product revenue related reserves	$	43,469	$	45,249
Accrued employee compensation costs		28,643		43,240
Accrued contract manufacturing costs		22,307		27,622
Accrued clinical and pre-clinical costs		19,281		18,010
Accrued milestone expense		9,643		18,390
Accrued professional fees		9,585		10,707
Accrued property and equipment		8,792		1,181
Accrued royalties		7,053		6,301
Accrued collaboration cost sharing		3,918		9,000
Accrued interest expense		1,045		1,045
Other		5,352		4,782
Total accrued expenses	$	159,088	$	185,527