Annual report pursuant to Section 13 and 15(d)

Note 8 - Income Taxes - Summary of Temporary Differences and Carryforwards That Give Rise to Deferred Tax Assets and Liabilities (Details)

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Note 8 - Income Taxes - Summary of Temporary Differences and Carryforwards That Give Rise to Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Net operating loss $ 9,400    
Less: valuation allowance (11,250) $ (11,370) $ (11,435)
Net deferred Federal tax liabilities (104)  
Net deferred tax liabilities (104)  
Domestic Tax Authority [Member]      
Bad debt reserves 1,459 1,178  
Stock-based compensation 443 393  
Net operating loss 7,991 8,025  
Operating lease liabilities 1,271  
Accrued compensation 451 218  
Inventories 27 27  
Accrued rent 31  
Goodwill and intangible assets 1,688 2,507  
Research & development credits 533 533  
Other credits 25 25  
Other 194 114  
Total deferred tax assets 14,082 13,051  
Less: valuation allowance (9,553) (9,724)  
Net deferred tax assets 4,529 3,327  
Depreciation and asset basis differences (3,366) (3,335)  
Right-of-use assets (1,204)  
Other 8  
Total deferred Federal tax liabilities (4,570) (3,327)  
Net deferred Federal tax liabilities (41)  
Total deferred tax assets 14,082 13,051  
Net deferred tax liabilities (41)  
State and Local Jurisdiction [Member]      
Total deferred tax assets [1] 1,634 1,646  
Less: valuation allowance (1,697) (1,646)  
Total deferred tax assets [1] 1,634 1,646  
Net deferred tax assets $ (63)  
[1] at December 31, 2019, this includes state and local net operating losses of $1.4 million