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INCOME TAXES - Deferred taxes (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Significant components of deferred tax assets    
Reserves and allowances $ 18 $ 22
R&D expenses 399 482
Intangible assets 31 44
Stock-based compensation 33 134
Loss carryforward 3,322 1,551
Deferred tax assets before valuation allowance 3,803 2,233
Less - valuation allowance $ (3,803) $ (2,233)