Note 20 - Parent Only Condensed Financial Statements - Condensed Statements of Income and Comprehensive Income (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Interest on junior subordinated deferrable interest debentures | $ 0 | $ 0 | $ 141,000 |
| Other expenses | 776,000 | 42,000 | 31,000 |
| Income before income taxes | 39,592,000 | 39,001,000 | 40,211,000 |
| Income tax (expense) benefit | (9,975,000) | (10,382,000) | (10,435,000) |
| Net income | 29,617,000 | 28,619,000 | 29,776,000 |
| Total comprehensive income | 44,271,000 | 35,938,000 | 34,068,000 |
| Parent Company [Member] | |||
| Dividends declared by bank subsidiary | 26,000,000 | 10,000,000 | 7,500,000 |
| Gain on termination of swaps | 0 | 0 | 1,707,000 |
| Earnings from investment in Plumas Statutory Trust I and II | 0 | 0 | 5,000 |
| Total income | 26,000,000 | 10,000,000 | 9,212,000 |
| Interest on junior subordinated deferrable interest debentures | 0 | 0 | 141,000 |
| Interest on borrowings | 1,012,000 | 641,000 | 369,000 |
| Other expenses | 595,000 | 622,000 | 523,000 |
| Total expenses | 1,607,000 | 1,263,000 | 1,033,000 |
| Income before equity in undistributed income of bank subsidiary | 24,393,000 | 8,737,000 | 8,179,000 |
| Equity in undistributed income of bank subsidiary | 4,708,000 | 19,462,000 | 21,746,000 |
| Income before income taxes | 29,101,000 | 28,199,000 | 29,925,000 |
| Income tax (expense) benefit | 516,000 | 420,000 | (149,000) |
| Net income | 29,617,000 | 28,619,000 | 29,776,000 |
| Total comprehensive income | $ 44,271,000 | $ 35,938,000 | $ 34,068,000 |
| X | ||||||||||
- Definition Amount of earnings during the period from investments in statutory trusts. No definition available.
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| X | ||||||||||
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of operating dividend income on securities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount, before investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition This element represents the undistributed income (or loss) of equity method investments, net of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations; such investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of interest expense classified as operating and nonoperating. Includes, but is not limited to, cost of borrowing accounted for as interest expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Interest expense incurred during the reporting period on junior subordinated debentures. Includes amortization of expenses incurred in the issuance of subordinated notes and debentures. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of interest expense classified as other. No definition available.
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| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Details
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