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Note 14 - Grants Received (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
May 31, 2022 | Oct. 31, 2020 | Jun. 30, 2022 | Dec. 31, 2024 | Dec. 31, 2019 | Dec. 31, 2023 | Jan. 01, 2023
Accounts Receivable, after Allowance for Credit Loss |  |  |  | $ 1,800 |  | $ 8,600 | $ 1,300
PG&E SEM Incentive Program [Member] |  |  |  |  |  |  |
Awarded Grants |  |  |  | 1,100 |  |  |
Proceeds from Grantors |  |  |  | 504 |  |  |
PG&E SEM Incentive Program [Member] | Grant Receivable [Member] |  |  |  |  |  |  |
Accounts Receivable, after Allowance for Credit Loss |  |  |  | 131 |  |  |
U.S. Department of Food And Agriculture Forest Service [Member] |  |  |  |  |  |  |
Awarded Grants |  |  |  | 245 |  |  |
LCFPP [Member] |  |  |  |  |  |  |
Awarded Grants |  |  |  | 4,200 |  |  |
Proceeds from Grantors |  |  |  | 3,800 |  |  |
CDFAs[Member] |  |  |  |  |  |  |
Awarded Grants |  | $ 7,800 |  |  | $ 3,200 |  |
Proceeds from Grantors |  |  |  | 6,800 |  |  |
CEC [Member] |  |  |  |  |  |  |
Matching Contribution |  |  |  |  | 7,900 |  |
Actual Expenses Incurred |  |  |  |  | 5,000 |  |
Unearned Grant Proceeds |  |  |  | 1,700 |  |  |
CEC [Member] | Maximum [Member] |  |  |  |  |  |  |
Awarded Grants |  |  |  |  | $ 5,000 |  |
California Energy Commission Grant for Solar Microgrid, DSC and Battery Backup System [Member] |  |  |  |  |  |  |
Awarded Grants |  |  |  | 8,000 |  |  |
Proceeds from Grantors |  |  |  | 5,900 |  |  |
Matching Contribution |  |  |  | 1,600 |  |  |
CAL FIRE Business and Workforce Development Grant Program [Member] |  |  |  |  |  |  |
Awarded Grants | $ 2,000 |  |  |  |  |  |
Proceeds from Grantors |  |  |  | 0 |  |  |
Matching Contribution | 5,800 |  |  |  |  |  |
CAL Fire [Member] |  |  |  |  |  |  |
Awarded Grants | 500 |  |  |  |  |  |
Proceeds from Grantors |  |  |  | 0 |  |  |
US Forest Service [Member] |  |  |  |  |  |  |
Awarded Grants | 642 |  |  |  |  |  |
USDA Bioguel Producer Program [Member] |  |  |  |  |  |  |
Proceeds from Grantors |  |  | $ 14,200 |  |  |  |
Matching Contribution | $ 2,400 |  |  |  |  |  |
California Energy Commission Grant for Mechanical Vapor Recompression System [Member] |  |  |  |  |  |  |
Awarded Grants |  |  |  | 6,000 |  |  |
Proceeds from Grantors |  |  |  | 3,900 |  |  |
Matching Contribution |  |  |  | $ 5,300 |  |  |

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