Annual report pursuant to Section 13 and 15(d)

Income Taxes - Deferred tax asset (Details)

v3.22.1
Income Taxes - Deferred tax asset (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Deferred tax assets:    
Net operating loss carryovers $ 23,719 $ 22,240
Stock compensation and other 293 760
Amortization of license 1,162 1,283
Accruals and reserves 6 16
Tax credits 2,640 2,640
Total deferred tax assets 27,820 26,939
Less valuation allowance (27,820) (26,939)
Deferred tax assets, net of valuation allowance $ 0 $ 0