Note 4 - Securities (Tables)
|
9 Months Ended |
Sep. 30, 2025 |
|---|
| Notes Tables |
|
| Unrealized Gain (Loss) on Investments [Table Text Block] |
| |
|
|
|
|
|
Gross
|
|
|
Gross
|
|
|
|
|
|
| |
|
Amortized
|
|
|
Unrealized
|
|
|
Unrealized
|
|
|
Fair
|
|
| |
|
Cost
|
|
|
Gain
|
|
|
Loss
|
|
|
Value
|
|
|
September 30, 2025
|
|
(In Thousands)
|
|
|
Debt Securities Available-for-Sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
669,701 |
|
|
$ |
2,865 |
|
|
$ |
- |
|
|
$ |
672,566 |
|
|
Mortgage-backed securities
|
|
|
143,062 |
|
|
|
835 |
|
|
|
(990 |
) |
|
|
142,907 |
|
|
State and municipal securities
|
|
|
10,364 |
|
|
|
1 |
|
|
|
(630 |
) |
|
|
9,735 |
|
|
Corporate debt
|
|
|
362,890 |
|
|
|
2,165 |
|
|
|
(12,119 |
) |
|
|
352,936 |
|
|
Total
|
|
$ |
1,186,017 |
|
|
$ |
5,866 |
|
|
$ |
(13,739 |
) |
|
$ |
1,178,144 |
|
|
Debt Securities Held-to-Maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
249,566 |
|
|
$ |
- |
|
|
$ |
(11,435 |
) |
|
$ |
238,131 |
|
|
Mortgage-backed securities
|
|
|
413,677 |
|
|
|
462 |
|
|
|
(37,440 |
) |
|
|
376,699 |
|
|
State and municipal securities
|
|
|
8,352 |
|
|
|
- |
|
|
|
(357 |
) |
|
|
7,995 |
|
|
Total
|
|
$ |
671,595 |
|
|
$ |
462 |
|
|
$ |
(49,232 |
) |
|
$ |
622,825 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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] |
| |
|
September 30, 2025
|
|
|
December 31, 2024
|
|
| |
|
Amortized Cost
|
|
|
Fair Value
|
|
|
Amortized Cost
|
|
|
Fair Value
|
|
| |
|
(In Thousands)
|
|
|
Debt securities available-for-sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Due within one year
|
|
$ |
239,505 |
|
|
$ |
239,744 |
|
|
$ |
223,145 |
|
|
$ |
223,477 |
|
|
Due from one to five years
|
|
|
518,573 |
|
|
|
519,914 |
|
|
|
478,868 |
|
|
|
475,985 |
|
|
Due from five to ten years
|
|
|
270,472 |
|
|
|
261,139 |
|
|
|
258,611 |
|
|
|
240,114 |
|
|
Due after ten years
|
|
|
14,405 |
|
|
|
14,440 |
|
|
|
3,000 |
|
|
|
2,550 |
|
|
Mortgage-backed securities
|
|
|
143,062 |
|
|
|
142,907 |
|
|
|
243,435 |
|
|
|
219,274 |
|
| |
|
$ |
1,186,017 |
|
|
$ |
1,178,144 |
|
|
$ |
1,207,059 |
|
|
$ |
1,161,400 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Debt securities held-to-maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Due within one year
|
|
$ |
3,838 |
|
|
$ |
3,781 |
|
|
$ |
250 |
|
|
$ |
250 |
|
|
Due from one to five years
|
|
|
254,080 |
|
|
|
242,345 |
|
|
|
256,743 |
|
|
|
236,586 |
|
|
Due from five to ten years
|
|
|
- |
|
|
|
- |
|
|
|
495 |
|
|
|
431 |
|
|
Mortgage-backed securities
|
|
|
413,677 |
|
|
|
376,699 |
|
|
|
457,365 |
|
|
|
402,229 |
|
| |
|
$ |
671,595 |
|
|
$ |
622,825 |
|
|
$ |
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)
|
|
|
September 30, 2025
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Debt Securities available-for-sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Mortgage-backed securities
|
|
$ |
- |
|
|
$ |
- |
|
|
|
(990 |
) |
|
$ |
25,182 |
|
|
$ |
(990 |
) |
|
$ |
25,182 |
|
|
State and municipal securities
|
|
|
- |
|
|
|
- |
|
|
|
(630 |
) |
|
|
9,290 |
|
|
|
(630 |
) |
|
|
9,290 |
|
|
Corporate debt
|
|
|
(935 |
) |
|
|
21,887 |
|
|
|
(11,185 |
) |
|
|
172,153 |
|
|
|
(12,119 |
) |
|
|
194,040 |
|
|
Total
|
|
$ |
(935 |
) |
|
$ |
21,887 |
|
|
$ |
(12,805 |
) |
|
$ |
206,625 |
|
|
$ |
(13,739 |
) |
|
$ |
228,512 |
|
|
Debt Securities held-to-maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
(11,435 |
) |
|
$ |
238,131 |
|
|
$ |
(11,435 |
) |
|
$ |
238,130 |
|
|
Mortgage-backed securities
|
|
|
- |
|
|
|
146 |
|
|
|
(37,440 |
) |
|
|
333,063 |
|
|
|
(37,440 |
) |
|
|
333,209 |
|
|
State and municipal securities
|
|
|
(53 |
) |
|
|
2,931 |
|
|
|
(304 |
) |
|
|
4,565 |
|
|
|
(357 |
) |
|
|
7,496 |
|
|
Total
|
|
$ |
(53 |
) |
|
$ |
3,077 |
|
|
$ |
(49,179 |
) |
|
$ |
575,759 |
|
|
$ |
(49,232 |
) |
|
$ |
578,835 |
|
|
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] |
| |
|
Three Months Ended September 30,
|
|
|
Nine Months Ended September 30,
|
|
| |
|
2025
|
|
|
2024
|
|
|
2025
|
|
|
2024
|
|
| |
|
(In Thousands)
|
|
|
(In Thousands)
|
|
|
Sale proceeds
|
|
$ |
76,002 |
|
|
$ |
- |
|
|
$ |
137,499 |
|
|
$ |
- |
|
|
Gross realized losses
|
|
|
(7,812 |
) |
|
|
- |
|
|
|
(16,375 |
) |
|
|
- |
|
|
Net realized gain (loss)
|
|
$ |
(7,812 |
) |
|
$ |
- |
|
|
$ |
(16,375 |
) |
|
$ |
- |
|
|