Accrued Expenses (Tables)

12 Months Ended

Dec. 31, 2018

Payables and Accruals [Abstract]

Schedule of Accrued Expenses and Other Current Liabilities

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

	Years Ended December 31,
	2018		2017
Accrued license obligations	$	2,523	$	806
Compensation expense	2,380		2,325
Research and development fees	1,945		791
Professional fees	943		516
Audit and tax fees	378		424
Other current liabilities	945		1,308
Total	$	9,114	$	6,170