Quarterly report pursuant to Section 13 or 15(d)

INTANGIBLE ASSETS, NET - Narrative (Details)

v3.21.2
INTANGIBLE ASSETS, NET - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]          
Intangible assets, gross $ 3,268   $ 3,268   $ 2,690
Write-off of abandoned patents 48 $ 39 61 $ 47  
Amortization of intangible assets 18 $ 24 60 $ 72  
Patents          
Finite-Lived Intangible Assets [Line Items]          
Intangible assets, gross 2,988   $ 2,988   $ 2,399
Domain Name          
Finite-Lived Intangible Assets [Line Items]          
Useful life     10 years    
Minimum | Patents          
Finite-Lived Intangible Assets [Line Items]          
Useful life     12 years    
Maximum | Patents          
Finite-Lived Intangible Assets [Line Items]          
Useful life     20 years    
STI | Patents          
Finite-Lived Intangible Assets [Line Items]          
Intangible assets, gross $ 216   $ 216    
Useful life     2 years