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Income Taxes (Details 2) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Deferred tax assets: |  |
Net operating loss carryforwards | $ 51 | $ 26
Allowance for doubtful accounts | 109 | 100
Accrued vacation | 61 | 60
Deferred buy-back asset | 942 | 1,259
Deferred income | 774 | 314
Right-of-use asset | 53 | 75
Other | 102 | 80
Gross deferred tax assets | 2,092 | 1,914
Deferred tax liabilities: |  |
Retainage | (284) | (424)
Deferred buy-back obligation | (846) | (1,069)
Fixed assets | (2,770) | (2,685)
Prepaids | (72) | (114)
Amortization - intangibles | (16) | (8)
Realized gain loss | 6 | 0
Lease liability | (53) | (75)
Gross deferred tax liabilities | (4,047) | (4,375)
Valuation allowance | 0 | 0
Net deferred tax liability | $ (1,955) | $ (2,461)

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