Other accrued expenses (Tables)

12 Months Ended

Dec. 31, 2018

Other accrued expenses

Summary of other accrued expenses

Other accrued expenses consist of the following (in thousands):

	As of December 31,
	2018		2017
Accrued inventory	$	599	$	835
Accrued royalties		323		221
Accrued professional services		723		346
Accrued development costs		795		1,559
Accrued other		689		599
Total accrued expenses	$	3,129	$	3,560