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Note 13 - Related Party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Schedule of Related Party Transactions [Table Text Block] |
|  | For the Year Ended December 31, |
(In thousands) |  | 2024 |  |  | 2023 |  |  | 2022 |
Operating and maintenance expenses |  | $ | 7,106 |  |  | $ | 6,747 |  |  | $ | 6,694 |
General and administrative expenses |  |  | 5,420 |  |  |  | 5,408 |  |  |  | 4,864 |

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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
Name: | us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration