Accrued expenses and other current liabilities

12 Months Ended

Dec. 31, 2016

Payables And Accruals [Abstract]

Accrued expenses and other current liabilities

7. Accrued expenses and other current liabilities

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

	December 31,
	2016		2015
Employee compensation	$	11,296	$	5,935
Accrued goods and services		34,275		15,876
Accrued license and milestone fees		2,464		277
Accrued professional fees		1,492		1,014
Deferred rent, current portion		11		964
Contingent consideration, current portion		4,479		3,584
Other		643		495
Total accrued expenses and other current liabilities	$	54,660	$	28,145

The change in employee compensation was primarily driven by an increase in accrued bonus of $4.9 million, primarily related to an increase in headcount. The change in accrued goods and services was primarily driven by a $4.5 million accrual for construction at 60 Binney Street as well as a $6.2 million accrual relating to services performed by a contract manufacturing organization.