Other Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Accrued Expenses [Abstract]

Other Accrued Liabilities

Other accrued liabilities consisted of the following:  

(in thousands)	December 31, 2019		December 31, 2018
Accrued research and development costs	$	7,062	$	2,221
Accrued employee costs	6,818		4,326
Accrued marketing and selling costs	1,973		—
Accrued interest expense	449		274
Accrued other costs	1,817		1,393
Other accrued liabilities	$	18,119	$	8,214