Segment and Geographic Data (Tables)

3 Months Ended

Mar. 31, 2020

Segment Reporting [Abstract]

Schedule of revenue by geographic information

Geographic information consisted of the following (in thousands):

	Three Months Ended March 31,
	2020		2019
Product revenue
United States	$	13,827	$	17,601
Germany	1,970		2,464
Rest of world	493		404
	$	16,290	$	20,469

Schedule of property, plant and equipment by geographic information

	March 31, 2020		December 31, 2019
Property and equipment, net
United States	$	13,707	$	13,303
Germany	49		53
	$	13,756	$	13,356