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, 2020
Dec. 31, 2019
Dec. 31, 2018
Less: valuation allowance $ (11,250) $ (11,370)
Net deferred tax assets 9,967    
Net deferred tax liabilities   (104)  
Net deferred tax assets 9,967    
Net deferred tax liabilities   104  
Domestic Tax Authority [Member]      
Bad debt reserves 1,570 1,459  
Stock-based compensation 656 443  
Net operating loss 7,337 7,991  
Operating lease liabilities 1,014 1,271  
Accrued compensation 757 451  
Inventories 214 27  
Goodwill and intangible assets 832 1,688  
Research & development credits 533 533  
Other credits 30 25  
Other 54 194  
Total deferred tax assets 12,997 14,082  
Less: valuation allowance (9,553)  
Net deferred Federal tax assets 12,997 4,529  
Depreciation and asset basis differences (3,393) (3,366)  
Right-of-use assets (937) (1,204)  
Total deferred Federal tax liabilities (4,330) (4,570)  
Net deferred tax assets 8,667    
Net deferred tax liabilities   (41)  
Total deferred tax assets 12,997 14,082  
Net deferred tax assets 8,667    
Net deferred tax liabilities   41  
State and Local Jurisdiction [Member]      
Total deferred tax assets [1] 1,300 1,634  
Less: valuation allowance (1,697)  
Net deferred tax assets 1,300    
Net deferred tax liabilities   (63)  
Total deferred tax assets [1] 1,300 1,634  
Net deferred tax assets $ 1,300    
Net deferred tax liabilities   $ 63  
[1] at December 31, 2019, this includes state and local net operating losses of $1.4 million