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Note 4 - Cash, Cash Equivalents and Restricted Cash | 9 Months Ended
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Sep. 30, 2025
Notes to Financial Statements |
Cash and Cash Equivalents Disclosure [Text Block] | 4. Cash, Cash Equivalents and Restricted Cash The Company manages its cash and cash equivalents based upon the Company’s operating, investment, and financing activities. Cash and cash equivalents, for the purposes of reporting cash flows, consist of cash and due from banks, short-term investments, and interest-bearing deposits. Cash and due from banks include cash on hand, cash items in transit, cash due from the Federal Reserve Bank of San Francisco (“FRBSF”) and other financial institutions. Short-term investments and interest-bearing deposits include cash placed with other banks with original maturity of three months or less. The Company had average excess balance with FRBSF of $1.10 billion as of September 30, 2025, and $1.05 billion as of December 31, 2024. As of September 30, 2025, and December 31, 2024, the Company had $16.5 million and $43.4 million, respectively, as cash margin that serves as collateral on deposits in a cash margin account for interest rate swaps. Of the balances held in the cash margin account $5.5 million and $8.6 million are restricted as of September 30, 2025, and December 31, 2024, respectively. As of December 31, 2024, the Company held $0.3 million in a restricted escrow account with a major bank for its alternative energy investments.

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- Definition The entire disclosure for cash and cash equivalent footnotes, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments maturing within three months from the date of acquisition qualify. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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