XML 30 R20.htm IDEA: XBRL DOCUMENT
v3.25.3

Note 3 - Securities (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2025
Notes Tables |
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
Available-for-Sale Securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal securities |  | $ | 702 |  |  | $ | 5 |  |  | $ | — |  |  | $ | 707 |
U.S. Treasury Bills and Notes |  |  | 533,241 |  |  |  | 214 |  |  |  | (101 | ) |  |  | 533,354 |
Mortgage-backed securities - residential |  |  | 2,692 |  |  |  | 37 |  |  |  | (48 | ) |  |  | 2,681 |
Collateralized mortgage obligations - residential |  |  | 770 |  |  |  | — |  |  |  | (9 | ) |  |  | 761 |
|  | $ | 537,405 |  |  | $ | 256 |  |  | $ | (158 | ) |  | $ | 537,503 |
December 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal securities |  | $ | 703 |  |  | $ | 3 |  |  | $ | — |  |  | $ | 706 |
U.S. Treasury Bills and Notes |  |  | 246,876 |  |  |  | 103 |  |  |  | (689 | ) |  |  | 246,290 |
U.S. government-sponsored agencies |  |  | 109,900 |  |  |  | 1 |  |  |  | (128 | ) |  |  | 109,773 |
Mortgage-backed securities - residential |  |  | 2,949 |  |  |  | 31 |  |  |  | (69 | ) |  |  | 2,911 |
Collateralized mortgage obligations - residential |  |  | 862 |  |  |  | — |  |  |  | (12 | ) |  |  | 850 |
|  | $ | 361,290 |  |  | $ | 138 |  |  | $ | (898 | ) |  | $ | 360,530 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | September 30, 2025 |
|  | Amortized Cost |  |  | Fair Value |
Due in one year or less |  | $ | 520,347 |  |  | $ | 520,479 |
Due after one year through five years |  |  | 13,596 |  |  |  | 13,582 |
|  |  | 533,943 |  |  |  | 534,061 |
Mortgage-backed securities - residential |  |  | 2,692 |  |  |  | 2,681 |
Collateralized mortgage obligations - residential |  |  | 770 |  |  |  | 761 |
|  | $ | 537,405 |  |  | $ | 537,503 |
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] |
|  | Less than 12 Months |  |  | 12 Months or More |  |  | Total |
|  | Count |  |  | Fair Value |  |  | Unrealized Loss |  |  | Count |  |  | Fair Value |  |  | Unrealized Loss |  |  | Count |  |  | Fair Value |  |  | Unrealized Loss |
September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury Bills and Notes |  |  | — |  |  | $ | — |  |  | $ | — |  |  |  | 16 |  |  | $ | 5,884 |  |  | $ | (101 | ) |  |  | 16 |  |  | $ | 5,884 |  |  | $ | (101 | )
Mortgage-backed securities - residential |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5 |  |  |  | 1,141 |  |  |  | (48 | ) |  |  | 5 |  |  |  | 1,141 |  |  |  | (48 | )
Collateralized mortgage obligations - residential |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5 |  |  |  | 761 |  |  |  | (9 | ) |  |  | 5 |  |  |  | 761 |  |  |  | (9 | )
|  |  | — |  |  | $ | — |  |  | $ | — |  |  |  | 26 |  |  | $ | 7,786 |  |  | $ | (158 | ) |  |  | 26 |  |  | $ | 7,786 |  |  | $ | (158 | )
December 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury Bills and Notes |  |  | — |  |  | $ | — |  |  | $ | — |  |  |  | 73 |  |  | $ | 48,609 |  |  | $ | (689 | ) |  |  | 73 |  |  | $ | 48,609 |  |  | $ | (689 | )
U.S. government-sponsored agencies |  |  | 10 |  |  |  | 79,872 |  |  |  | (128 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 10 |  |  |  | 79,872 |  |  |  | (128 | )
Mortgage-backed securities - residential |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 7 |  |  |  | 1,364 |  |  |  | (69 | ) |  |  | 7 |  |  |  | 1,364 |  |  |  | (69 | )
Collateralized mortgage obligations - residential |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5 |  |  |  | 850 |  |  |  | (12 | ) |  |  | 5 |  |  |  | 850 |  |  |  | (12 | )
|  |  | 10 |  |  | $ | 79,872 |  |  | $ | (128 | ) |  |  | 85 |  |  | $ | 50,823 |  |  | $ | (770 | ) |  |  | 95 |  |  | $ | 130,695 |  |  | $ | (898 | )

X
- Definition Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479081/326-30-55-8 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-6 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-4 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
Name: | us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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