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Note 9 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Net operating loss carryforwards $ 1,400 $ 973
Share-based compensation 5,129 5,344
Capitalized research and experimental expenditures 3,069 4,088
Intangible assets, net 1,415  
Tax credits 1,413  
Accrued expense 1,178 894
Operating lease liability 973 1,533
Interest expense limitation 589  
Accounts receivable, net 56 136
Other 280  
Deferred Tax Assets, Gross 15,502 12,968
Valuation allowance (14,568) (11,171)
Total deferred tax assets, net of valuation allowance 934 1,797
Operating lease right-of-use asset (827) (1,300)
Property and equipment, net (136) (222)
Intangible assets, net   (407)
Other   (42)
Deferred Tax Liabilities, Gross (963) (1,971)
Net deferred tax liability $ (29) $ (174)