Segment and geographic information (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Revenue and Long-Lived Assets By Geographical Region

The following tables set forth the Company’s asset information by geographic region (in thousands): 

	As of December 31,
	2019		2018
Property, plant and equipment, net:
China	$	19,230	$	27,329
United States	26,068		29,054
Japan	25,772		29,631
Rest of world	10,063		14,076
Total	$	81,133	$	100,090