Accrued expenses and other current liabilities

12 Months Ended

Dec. 31, 2019

Payables and Accruals [Abstract]

Accrued expenses and other current liabilities

Accrued expenses and other current liabilities

Accrued expenses and other current liabilities consist of the following (in thousands):

	As of December 31,
	2019		2018
Employee compensation	$	44,679	$	28,567
Manufacturing costs	23,126		21,618
Clinical and contract research organization costs	16,799		11,891
Collaboration research costs	27,142		3,358
Property, plant, and equipment	2,354		5,451
License and milestone fees	300		7,739
Professional fees	1,827		1,830
Financing lease obligation, current portion	—		1,424
Other	25,329		17,515
Total accrued expenses and other current liabilities	$	141,556	$	99,393