Accrued Expenses and Other Liabilities (Tables)

9 Months Ended

Sep. 30, 2017

Accrued Expenses and Other Liabilities

Schedule of accrued expenses and other current liabilities

(in thousands)	As of December 31, 2016		As of September 30, 2017
Research and development related costs	$	8,716	$	4,487
Payroll and related costs	2,150		3,520
Accounting, tax and audit services	484		222
Other	1,976		2,785
Total other current liabilities	$	13,326	$	11,014