Annual report pursuant to Section 13 and 15(d)

BUSINESS SEGMENTS - Long-Lived Assets Disaggregated by Geographic Operating Segments (Details)

v3.20.4
BUSINESS SEGMENTS - Long-Lived Assets Disaggregated by Geographic Operating Segments (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Segment Reporting Information [Line Items]    
Long-Lived Assets $ 47,285 $ 20,340
United States    
Segment Reporting Information [Line Items]    
Long-Lived Assets 14,798 7,787
China    
Segment Reporting Information [Line Items]    
Long-Lived Assets 14,207 5,296
Czech Republic    
Segment Reporting Information [Line Items]    
Long-Lived Assets 6,070 3,278
France    
Segment Reporting Information [Line Items]    
Long-Lived Assets 11,076 3,144
Other Foreign Countries    
Segment Reporting Information [Line Items]    
Long-Lived Assets $ 1,134 $ 835