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Note 6 - Other Assets and Other Liabilities - Other Assets (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Cost method equity investments: |  |  |
Federal Reserve Bank stock (1) | [1] | $ 14,069 | $ 14,069
Other investments |  | 158 | 158
Total cost method equity investments |  | 14,227 | 14,227
Life insurance cash surrender value |  | 68,969 | 68,578
Net deferred tax asset |  | 71,243 | 88,606
Right-of-use asset |  | 19,992 | 17,985
Limited partnership investments |  | 32,636 | 28,551
Interest receivable |  | 42,123 | 44,606
Prepaid assets |  | 4,708 | 5,697
Other assets |  | 5,410 | 12,635
Total other assets |  | $ 259,308 | $ 280,885
[1] | A bank applying for membership in the Federal Reserve System is required to subscribe to stock in the Federal Reserve Bank (FRB) in its district in a sum equal to six percent of the bank’s paid-up capital stock and surplus. One-half of the amount of the bank's subscription shall be paid to the FRB and the remaining half will be subject to call when deemed necessary by the Board of Governors of the Federal Reserve System.

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- Definition The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
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