Note 2 - Debt Securities (Tables)
|
12 Months Ended |
Dec. 31, 2024 |
|---|
| Notes Tables |
|
| Unrealized Gain (Loss) on Investments [Table Text Block] |
| |
|
|
|
|
|
Gross
|
|
|
Gross
|
|
|
|
|
|
| |
|
Amortized
|
|
|
Unrealized
|
|
|
Unrealized
|
|
|
Market
|
|
| |
|
Cost
|
|
|
Gain
|
|
|
Loss
|
|
|
Value
|
|
| December 31, 2024 |
|
(In Thousands) |
|
|
Debt Securities Available-for-Sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury Securities
|
|
$ |
617,350 |
|
|
$ |
580 |
|
|
$ |
(444 |
) |
|
$ |
617,486 |
|
|
Mortgage-backed securities
|
|
|
243,435 |
|
|
|
49 |
|
|
|
(24,210 |
) |
|
|
219,274 |
|
|
State and municipal securities
|
|
|
10,516 |
|
|
|
1 |
|
|
|
(1,000 |
) |
|
|
9,517 |
|
|
Corporate debt
|
|
|
335,758 |
|
|
|
38 |
|
|
|
(20,673 |
) |
|
|
315,123 |
|
|
Total
|
|
$ |
1,207,059 |
|
|
$ |
668 |
|
|
$ |
(46,327 |
) |
|
$ |
1,161,400 |
|
|
Debt Securities Held-to-Maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury Securities
|
|
$ |
249,403 |
|
|
$ |
- |
|
|
$ |
(19,632 |
) |
|
$ |
229,771 |
|
|
Mortgage-backed securities
|
|
|
457,365 |
|
|
|
14 |
|
|
|
(55,150 |
) |
|
|
402,229 |
|
|
State and municipal securities
|
|
|
8,085 |
|
|
|
- |
|
|
|
(589 |
) |
|
|
7,496 |
|
|
Total
|
|
$ |
714,853 |
|
|
$ |
14 |
|
|
$ |
(75,371 |
) |
|
$ |
639,496 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
December 31, 2023
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Debt Securities Available-for-Sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury Securities
|
|
$ |
340,556 |
|
|
$ |
251 |
|
|
$ |
- |
|
|
$ |
340,807 |
|
|
Mortgage-backed securities
|
|
|
241,458 |
|
|
|
6 |
|
|
|
(25,979 |
) |
|
|
215,485 |
|
|
State and municipal securities
|
|
|
11,400 |
|
|
|
1 |
|
|
|
(1,178 |
) |
|
|
10,223 |
|
|
Corporate debt
|
|
|
375,676 |
|
|
|
- |
|
|
|
(42,008 |
) |
|
|
333,668 |
|
|
Total
|
|
$ |
969,090 |
|
|
$ |
258 |
|
|
$ |
(69,165 |
) |
|
$ |
900,183 |
|
|
Debt Securities Held-to-Maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury Securities
|
|
$ |
508,985 |
|
|
$ |
- |
|
|
$ |
(24,718 |
) |
|
$ |
484,267 |
|
|
Mortgage-backed securities
|
|
|
465,615 |
|
|
|
3 |
|
|
|
(50,025 |
) |
|
|
415,593 |
|
|
State and municipal securities
|
|
|
8,063 |
|
|
|
- |
|
|
|
(732 |
) |
|
|
7,331 |
|
|
Total
|
|
$ |
982,664 |
|
|
$ |
3 |
|
|
$ |
(75,475 |
) |
|
$ |
907,191 |
|
|
| Fair Value, Assets Measured on Recurring Basis [Table Text Block] |
| |
|
December 31, 2024
|
|
|
December 31, 2023
|
|
| |
|
Amortized Cost
|
|
|
Market Value
|
|
|
Amortized Cost
|
|
|
Market Value
|
|
| |
|
(In Thousands)
|
|
|
Debt securities available-for-sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Due within one year
|
|
$ |
223,145 |
|
|
$ |
223,477 |
|
|
$ |
350,400 |
|
|
$ |
350,395 |
|
|
Due from one to five years
|
|
|
478,868 |
|
|
|
475,985 |
|
|
|
70,016 |
|
|
|
67,334 |
|
|
Due from five to ten years
|
|
|
258,611 |
|
|
|
240,114 |
|
|
|
304,216 |
|
|
|
264,893 |
|
|
Due after ten years
|
|
|
3,000 |
|
|
|
2,550 |
|
|
|
3,000 |
|
|
|
2,076 |
|
|
Mortgage-backed securities
|
|
|
243,435 |
|
|
|
219,274 |
|
|
|
241,458 |
|
|
|
215,485 |
|
| |
|
$ |
1,207,059 |
|
|
$ |
1,161,400 |
|
|
$ |
969,090 |
|
|
$ |
900,183 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Debt securities held-to-maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Due within one year
|
|
$ |
250 |
|
|
$ |
250 |
|
|
$ |
260,047 |
|
|
$ |
257,835 |
|
|
Due from one to five years
|
|
|
256,743 |
|
|
|
236,586 |
|
|
|
203,481 |
|
|
|
185,741 |
|
|
Due from five to ten years
|
|
|
495 |
|
|
|
431 |
|
|
|
53,521 |
|
|
|
48,022 |
|
|
Due after ten years
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
Mortgage-backed securities
|
|
|
457,365 |
|
|
|
402,229 |
|
|
|
465,615 |
|
|
|
415,593 |
|
| |
|
$ |
714,853 |
|
|
$ |
639,496 |
|
|
$ |
982,664 |
|
|
$ |
907,191 |
|
|
| Gain (Loss) on Securities [Table Text Block] |
| |
|
Less Than Twelve Months
|
|
|
Twelve Months or More
|
|
|
Total
|
|
| |
|
Gross
|
|
|
|
|
|
|
Gross
|
|
|
|
|
|
|
Gross
|
|
|
|
|
|
| |
|
Unrealized
|
|
|
|
|
|
|
Unrealized
|
|
|
|
|
|
|
Unrealized
|
|
|
|
|
|
| |
|
Losses
|
|
|
Fair Value
|
|
|
Losses
|
|
|
Fair Value
|
|
|
Losses
|
|
|
Fair Value
|
|
| |
|
(In Thousands)
|
|
|
December 31, 2024
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Debt Securities available-for-sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury Securities
|
|
$ |
(445 |
) |
|
$ |
250,547 |
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
(445 |
) |
|
$ |
250,547 |
|
|
Government Agency Securities
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
Mortgage-backed securities
|
|
|
(6 |
) |
|
|
577 |
|
|
|
(24,204 |
) |
|
|
179,178 |
|
|
|
(24,210 |
) |
|
|
179,755 |
|
|
State and municipal securities
|
|
|
- |
|
|
|
- |
|
|
|
(1,000 |
) |
|
|
9,072 |
|
|
|
(1,000 |
) |
|
|
9,072 |
|
|
Corporate debt
|
|
|
(1,307 |
) |
|
|
25,596 |
|
|
|
(19,366 |
) |
|
|
284,489 |
|
|
|
(20,673 |
) |
|
|
310,085 |
|
|
Total
|
|
$ |
(1,758 |
) |
|
$ |
276,720 |
|
|
$ |
(44,570 |
) |
|
$ |
472,739 |
|
|
$ |
(46,328 |
) |
|
$ |
749,459 |
|
|
Debt Securities held-to-maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury Securities
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
(19,632 |
) |
|
$ |
229,771 |
|
|
$ |
(19,632 |
) |
|
$ |
229,771 |
|
|
Mortgage-backed securities
|
|
|
(536 |
) |
|
|
40,115 |
|
|
|
(54,614 |
) |
|
|
356,215 |
|
|
|
(55,150 |
) |
|
|
396,330 |
|
|
State and municipal securities
|
|
|
- |
|
|
|
- |
|
|
|
(589 |
) |
|
|
7,247 |
|
|
|
(589 |
) |
|
|
7,247 |
|
|
Total
|
|
$ |
(536 |
) |
|
$ |
40,115 |
|
|
$ |
(74,835 |
) |
|
$ |
593,233 |
|
|
$ |
(75,371 |
) |
|
$ |
633,348 |
|
|
December 31, 2023
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Debt Securities available-for-sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Mortgage-backed securities
|
|
$ |
(6 |
) |
|
$ |
704 |
|
|
$ |
(25,973 |
) |
|
$ |
214,393 |
|
|
$ |
(25,979 |
) |
|
$ |
215,097 |
|
|
State and municipal securities
|
|
|
- |
|
|
|
- |
|
|
|
(1,178 |
) |
|
|
9,777 |
|
|
|
(1,178 |
) |
|
|
9,777 |
|
|
Corporate debt
|
|
|
(794 |
) |
|
|
15,141 |
|
|
|
(41,214 |
) |
|
|
311,666 |
|
|
|
(42,009 |
) |
|
|
326,807 |
|
|
Total
|
|
$ |
(801 |
) |
|
$ |
15,845 |
|
|
$ |
(68,365 |
) |
|
$ |
535,836 |
|
|
$ |
(69,166 |
) |
|
$ |
551,681 |
|
|
U.S. Treasury Securities
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
(24,718 |
) |
|
$ |
484,267 |
|
|
$ |
(24,718 |
) |
|
$ |
484,267 |
|
|
Mortgage-backed securities
|
|
|
(1 |
) |
|
|
430 |
|
|
|
(50,024 |
) |
|
|
411,585 |
|
|
|
(50,025 |
) |
|
|
412,015 |
|
|
State and municipal securities
|
|
|
- |
|
|
|
- |
|
|
|
(732 |
) |
|
|
7,081 |
|
|
|
(732 |
) |
|
|
7,081 |
|
|
Total
|
|
$ |
(1 |
) |
|
$ |
430 |
|
|
$ |
(75,474 |
) |
|
$ |
902,933 |
|
|
$ |
(75,475 |
) |
|
$ |
903,363 |
|
|
| Debt Securities, Available-for-Sale [Table Text Block] |
| |
|
Years Ended December 31,
|
|
| |
|
2024
|
|
|
2023
|
|
|
2022
|
|
| |
|
(In Thousands)
|
|
|
Sale and call proceeds
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
75,036 |
|
|
Gross realized gains
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
- |
|
|
Gross realized losses
|
|
|
- |
|
|
|
- |
|
|
|
(6,168 |
) |
|
Net realized (loss) gain
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
(6,168 |
) |
|