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Note 12. Income Taxes (Details 2) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Assets: |  |
Deferred revenue | $ 24 | $ 379
Allowance for doubtful accounts | 149 | 149
Stock options | 108 | 156
Transaction costs | 46 | 49
Other | 138 | 39
Total deferred tax asset | 465 | 772
Liabilities: |  |
Prepaid expenses | (15) | (23)
Basis difference in fixed assets | (188) | (14)
Capitalized software | 0 | (94)
Purchase of intangibles | (459) | (522)
Other | 0 | (4)
Total deferred tax liability | (662) | (657)
Total net deferred tax asset/(liability) | (197) | $ 115
Change |  |
Assets: |  |
Deferred revenue | (355) |
Allowance for doubtful accounts | 0 |
Stock options | (48) |
Transaction costs | (3) |
Other | 99 |
Total deferred tax asset | (307) |
Liabilities: |  |
Prepaid expenses | 8 |
Basis difference in fixed assets | (174) |
Capitalized software | 94 |
Purchase of intangibles | 63 |
Other | 4 |
Total deferred tax liability | (5) |
Total net deferred tax asset/(liability) | $ (312) |

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