Annual report pursuant to Section 13 and 15(d)

Income Taxes - Deferred tax assets (Details)

v3.22.1
Income Taxes - Deferred tax assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Deferred tax assets:    
Net operating loss carryforwards $ 62,097 $ 64,120
Research credit carryforwards 14,738 15,228
Other, net 1,113 1,005
Total deferred tax assets 77,948 80,353
Other, net (65) (31)
Total deferred tax liabilities (65) (31)
Valuation allowance (77,883) (80,322)
Net deferred tax assets $ 0 $ 0