Accrued Expenses and Other Liabilities

6 Months Ended

Jun. 30, 2018

Accrued Expenses and Other Liabilities

Accrued Expenses and Other Liabilities

4.Accrued Expenses and Other Liabilities

(in thousands)	As of December 31, 2017		As of June 30, 2018
Research and development related costs	$	2,308	$	2,695
Payroll and related costs	4,426		3,760
Accounting, tax and audit services	231		182
Other	1,159		1,727
Total other current liabilities	$	8,124	$	8,364