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Note 5 - Investments in Affordable Housing and Alternative Energy Partnerships (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Investments in Affordable Housing and Alternative Energy Partnerships [Table Text Block] |
|  | As of December 31, |
(In thousands) |  | 2020 |  |  | 2019 |
Investments in affordable housing partnerships, net |  | $ | 279,981 |  |  | $ | 276,506 |
Other borrowings for affordable housing limited partnerships |  | $ | 23,714 |  |  | $ | 29,022 |
Investments in affordable housing and alternative energy partnerships, unfunded commitments |  | $ | 103,060 |  |  | $ | 114,541 |
Investments in alternative energy tax credit partnerships, net |  | $ | 29,035 |  |  | $ | 32,175 |
Unfunded Commitments Future Estimated Payments [Table Text Block] |
|  | Amount |
Year Ending December 31, |  | (In thousands) |
2021 |  | $ | 41,602 |
2022 |  |  | 34,696 |
2023 |  |  | 19,782 |
2024 |  |  | 1,408 |
2025 |  |  | 619 |
Thereafter |  |  | 4,953 |
Total unfunded commitments |  | $ | 103,060 |
Usage of Affordable Housing and Other Tax Credits Including Energy Tax Credit [Table Text Block] |
|  | As of December 31, |
(In thousands) |  | 2020 |  |  | 2019 |  |  | 2018 |
Affordable housing and other tax credits recognized |  | $ | 23,273 |  |  | $ | 21,523 |  |  | $ | 18,860 |
Alternative energy tax credit usage |  | $ | 29,706 |  |  | $ | 17,786 |  |  | $ | 15,013 |

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