Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Income Taxes by Jurisdiction (Details)

v3.20.4
INCOME TAXES - Income Taxes by Jurisdiction (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
U.S. federal:    
Current $ 0 $ 0
Deferred 0 0
Total U.S. federal 0 0
U.S. state and local:    
Current 1 1
Deferred 0 0
Total U.S. state and local 1 1
Foreign:    
Current 0 0
Deferred 0 0
Total foreign 0 0
Income taxes differ from the amounts computed by applying the U.S. federal income tax rate to pretax income (loss) before income taxes    
Expected income tax benefit (5,966) (6,284)
State income tax (benefit), net of federal benefit (1,961) (2,476)
Valuation allowance 7,732 9,131
Permanent differences:    
Stock options 353 493
Research & development credit (560) (715)
Adjustment to deferred taxes 400 (157)
Foreign rate differential (1) 1
Other 4 8
Provision for (benefit from) income taxes $ 1 $ 1