Note 4 - Securities (Tables)
|
6 Months Ended |
Jun. 30, 2025 |
|---|
| Notes Tables |
|
| Unrealized Gain (Loss) on Investments [Table Text Block] |
| |
|
|
|
|
|
Gross
|
|
|
Gross
|
|
|
|
|
|
| |
|
Amortized
|
|
|
Unrealized
|
|
|
Unrealized
|
|
|
Fair
|
|
| |
|
Cost
|
|
|
Gain
|
|
|
Loss
|
|
|
Value
|
|
|
June 30, 2025
|
|
(In Thousands)
|
|
|
Debt Securities Available-for-Sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
699,077 |
|
|
$ |
2,442 |
|
|
$ |
(37 |
) |
|
$ |
701,482 |
|
|
Mortgage-backed securities
|
|
|
187,193 |
|
|
|
568 |
|
|
|
(9,610 |
) |
|
|
178,151 |
|
|
State and municipal securities
|
|
|
10,366 |
|
|
|
1 |
|
|
|
(728 |
) |
|
|
9,639 |
|
|
Corporate debt
|
|
|
355,315 |
|
|
|
617 |
|
|
|
(17,353 |
) |
|
|
338,579 |
|
|
Total
|
|
$ |
1,251,951 |
|
|
$ |
3,628 |
|
|
$ |
(27,728 |
) |
|
$ |
1,227,851 |
|
|
Debt Securities Held-to-Maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
249,511 |
|
|
$ |
- |
|
|
$ |
(13,349 |
) |
|
$ |
236,162 |
|
|
Mortgage-backed securities
|
|
|
428,794 |
|
|
|
131 |
|
|
|
(42,904 |
) |
|
|
386,021 |
|
|
State and municipal securities
|
|
|
8,347 |
|
|
|
- |
|
|
|
(425 |
) |
|
|
7,922 |
|
|
Total
|
|
$ |
686,652 |
|
|
$ |
131 |
|
|
$ |
(56,678 |
) |
|
$ |
630,105 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
December 31, 2024
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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 |
|
|
| Fair Value, Assets Measured on Recurring Basis [Table Text Block] |
| |
|
June 30, 2025
|
|
|
December 31, 2024
|
|
| |
|
Amortized Cost
|
|
|
Fair Value
|
|
|
Amortized Cost
|
|
|
Fair Value
|
|
| |
|
(In Thousands)
|
|
|
Debt securities available-for-sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Due within one year
|
|
$ |
268,240 |
|
|
$ |
268,438 |
|
|
$ |
223,145 |
|
|
$ |
223,477 |
|
|
Due from one to five years
|
|
|
505,309 |
|
|
|
505,923 |
|
|
|
478,868 |
|
|
|
475,985 |
|
|
Due from five to ten years
|
|
|
276,806 |
|
|
|
261,360 |
|
|
|
258,611 |
|
|
|
240,114 |
|
|
Due after ten years
|
|
|
14,403 |
|
|
|
13,979 |
|
|
|
3,000 |
|
|
|
2,550 |
|
|
Mortgage-backed securities
|
|
|
187,193 |
|
|
|
178,151 |
|
|
|
243,435 |
|
|
|
219,274 |
|
| |
|
$ |
1,251,951 |
|
|
$ |
1,227,851 |
|
|
$ |
1,207,059 |
|
|
$ |
1,161,400 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Debt securities held-to-maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Due within one year
|
|
$ |
853 |
|
|
$ |
847 |
|
|
$ |
250 |
|
|
$ |
250 |
|
|
Due from one to five years
|
|
|
257,005 |
|
|
|
243,237 |
|
|
|
256,743 |
|
|
|
236,586 |
|
|
Due from five to ten years
|
|
|
- |
|
|
|
- |
|
|
|
495 |
|
|
|
431 |
|
|
Mortgage-backed securities
|
|
|
428,794 |
|
|
|
386,021 |
|
|
|
457,365 |
|
|
|
402,229 |
|
| |
|
$ |
686,652 |
|
|
$ |
630,105 |
|
|
$ |
714,853 |
|
|
$ |
639,496 |
|
|
| 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)
|
|
|
June 30, 2025
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Debt Securities available-for-sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
(37 |
) |
|
$ |
68,554 |
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
(37 |
) |
|
$ |
68,554 |
|
|
Mortgage-backed securities
|
|
$ |
- |
|
|
$ |
72 |
|
|
|
(9,610 |
) |
|
$ |
106,391 |
|
|
$ |
(9,610 |
) |
|
$ |
106,463 |
|
|
State and municipal securities
|
|
|
- |
|
|
|
- |
|
|
|
(728 |
) |
|
|
9,194 |
|
|
|
(728 |
) |
|
|
9,194 |
|
|
Corporate debt
|
|
|
(706 |
) |
|
|
23,644 |
|
|
|
(16,648 |
) |
|
|
249,651 |
|
|
|
(17,353 |
) |
|
|
273,295 |
|
|
Total
|
|
$ |
(743 |
) |
|
$ |
92,270 |
|
|
$ |
(26,986 |
) |
|
$ |
365,236 |
|
|
$ |
(27,728 |
) |
|
$ |
457,506 |
|
|
Debt Securities held-to-maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
(13,349 |
) |
|
$ |
236,163 |
|
|
$ |
(13,349 |
) |
|
$ |
236,162 |
|
|
Mortgage-backed securities
|
|
|
(125 |
) |
|
|
27,124 |
|
|
|
(42,779 |
) |
|
|
341,693 |
|
|
|
(42,904 |
) |
|
|
368,817 |
|
|
State and municipal securities
|
|
|
(77 |
) |
|
|
2,902 |
|
|
|
(348 |
) |
|
|
4,519 |
|
|
|
(425 |
) |
|
|
7,421 |
|
|
Total
|
|
$ |
(202 |
) |
|
$ |
30,026 |
|
|
$ |
(56,476 |
) |
|
$ |
582,375 |
|
|
$ |
(56,678 |
) |
|
$ |
612,400 |
|
|
December 31, 2024
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Debt Securities available-for-sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
(445 |
) |
|
$ |
250,547 |
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
(445 |
) |
|
$ |
250,547 |
|
|
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 |
|
|
| Debt Securities, Available-for-Sale [Table Text Block] |
| |
|
Six Months Ended June 30,
|
|
| |
|
2025
|
|
|
2024
|
|
| |
|
(In Thousands)
|
|
|
Sale proceeds
|
|
$ |
61,897 |
|
|
$ |
- |
|
|
Gross realized losses
|
|
|
(8,563 |
) |
|
|
- |
|
|
Net realized gain (loss)
|
|
$ |
(8,563 |
) |
|
$ |
- |
|
|