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Note 7 - Commitments and Contingencies (Tables) | 6 Months Ended
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Jun. 30, 2026
Notes Tables |
Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
|  | Commercial |  |  | Residential |  |  | Total |
Three months ended June 30, 2026 |  |  | 16 | % |  |  | 84 | % |  |  | 100 | %
Three months ended June 30, 2025 |  |  | 26 | % |  |  | 74 | % |  |  | 100 | %
Six months ended June 30, 2026 |  |  | 16 | % |  |  | 84 | % |  |  | 100 | %
Six months ended June 30, 2025 |  |  | 26 | % |  |  | 74 | % |  |  | 100 | %

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- Definition Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-18 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-20 + Details
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