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Note 15 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | Jan. 01, 2023 | Aug. 08, 2022 | Jul. 01, 2022 | Jan. 01, 2022 | Mar. 06, 2023 | Dec. 31, 2022 | Mar. 08, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Mar. 06, 2020 | Jan. 09, 2012 | Jan. 06, 2012
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  |  |  |  | $ 15.92 |  | $ 2.59 | $ 2.59 |  |  |
Preferred Units Series A Redeemable By December 31, 2022 [Member] | ABGL [Member] |  |  |  |  |  |  |  |  |  |  |  |
Preferred Units Issued Value |  | $ 116,000 |  |  |  |  |  |  |  |  |  |
AAFK [Member] | Warrants in Connection With Subordinated Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Issued (in shares) |  |  | 113 | 113 |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  | $ 0.01 | $ 0.01 |  |  |  |  |  |  | $ 0.01 |
Subsequent Event [Member] | Preferred Units Series A Redeemable By December 31, 2022 [Member] | ABGL [Member] |  |  |  |  |  |  |  |  |  |  |  |
Preferred Units Issued Value | $ 125,000 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | AAFK [Member] | Warrants in Connection With Subordinated Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Issued (in shares) | 113 |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 0.01 |  |  |  |  |  |  |  |  |  |  |
Subordinated Notes [Member] | AAFK [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fee Amount |  |  |  |  |  |  |  |  |  |  | $ 2,500 | $ 900
Subordinated Notes [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Equity Financing | $ 25,000 |  |  |  |  |  |  |  |  |  |  |
Subordinated Notes 1 [Member] | AAFK [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Cash Extension Fee |  |  |  | $ 90 |  |  |  |  |  |  |  |
Subordinated Notes 1 [Member] | Subsequent Event [Member] | AAFK [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Cash Extension Fee | 90 |  |  |  |  |  |  |  |  |  |  |
Subordinated Notes 2 [Member] | AAFK [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Cash Extension Fee |  |  |  | $ 250 |  |  |  |  |  |  |  |
Subordinated Notes 2 [Member] | Subsequent Event [Member] | AAFK [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Cash Extension Fee | $ 250 |  |  |  |  |  |  |  |  |  |  |
Amendment No. 22 [Member] | Third Eye Capital [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fee Amount |  |  |  |  |  |  | $ 100 |  |  |  |  |
Amendment No. 22 [Member] | Subsequent Event [Member] | Third Eye Capital [Member] |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Line of Credit, Total |  |  |  |  | $ 50,000 |  |  |  |  |  |  |
Debt Instrument, Fee Amount |  |  |  |  | $ 500 |  |  |  |  |  |  |
Reserve Liquidity Facility Paid Monthly in Arrears [Member] | Third Eye Capital [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  | 30.00% |  |
Reserve Liquidity Facility Paid Monthly in Arrears [Member] | Subsequent Event [Member] | Third Eye Capital [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 30.00% |  |  |  |  |  |  |
Reserve Liquidity Facility if Event of Default Occurred and Continues [Member] | Third Eye Capital [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  | 40.00% |  |
Reserve Liquidity Facility if Event of Default Occurred and Continues [Member] | Subsequent Event [Member] | Third Eye Capital [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 40.00% |  |  |  |  |  |  |
Amendment No. 25 [Member] | Subsequent Event [Member] | Third Eye Capital [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fee Amount |  |  |  |  | $ 100 |  |  |  |  |  |  |

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