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Income Tax (Details Narrative) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax |  |  |
Undistributed earnings of the Company's foreign subsidiaries | $ 8,900,000 | $ 8,000,000 | $ 7,000,000
Deferred tax liability | $ 0 | $ 100,000 |
Federal income tax rate | 21.00% |  |
State NOL carryforwards | $ 252,000,000.0 |  |
Federal NOL carryforwards | 201,000,000.0 |  |
Credit loss carryforwards | 1,500,000 |  |
Depreciation loss carryforwards | 5,100,000 |  |
Credit carryforwards Carbon Oxide Sequestration | $ 3,500,000 |  |
Federal net operating loss and other tax credit carryforwards expiration year | expire on various dates between 2027 and 2037. |  |

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