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Note 12 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Net operating losses $ 1,293,912 $ 1,293,842
Inventory 184,046 224,656
Reserves and accruals 741,684 725,875
Amortization of intangible assets 50,107 80,930
Share-based compensation 280,396 398,165
Deferred revenue 702,617 709,480
Lease liability 570,446 520,830
Other 267,050 191,174
Deferred income tax assets 4,090,258 4,144,952
Less: valuation allowance (1,022,191) (1,022,135)
Deferred income tax assets, net of valuation allowance 3,068,067 3,122,817
Amortization of goodwill (197,245) (199,172)
Property, plant and equipment (156,289) (81,065)
Other (291,926) (298,527)
Deferred income tax asset, net $ 2,422,607 $ 2,544,053