Note 2 - Debt Securities (Tables)
|
12 Months Ended |
Dec. 31, 2025 |
|---|
| Notes Tables |
|
| Unrealized Gain (Loss) on Investments [Table Text Block] |
| |
|
|
|
|
|
Gross
|
|
|
Gross
|
|
|
|
|
|
| |
|
Amortized
|
|
|
Unrealized
|
|
|
Unrealized
|
|
|
Market
|
|
| |
|
Cost
|
|
|
Gain
|
|
|
Loss
|
|
|
Value
|
|
| December 31, 2025 |
|
(In Thousands) |
|
|
Debt Securities Available-for-Sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
520,100 |
|
|
$ |
2,823 |
|
|
$ |
- |
|
|
$ |
522,923 |
|
|
Mortgage-backed securities
|
|
|
133,126 |
|
|
|
1,030 |
|
|
|
(852 |
) |
|
|
133,304 |
|
|
State and municipal securities
|
|
|
10,362 |
|
|
|
1 |
|
|
|
(554 |
) |
|
|
9,809 |
|
|
Corporate debt
|
|
|
409,725 |
|
|
|
2,274 |
|
|
|
(9,210 |
) |
|
|
402,789 |
|
|
Total
|
|
$ |
1,073,313 |
|
|
$ |
6,128 |
|
|
$ |
(10,616 |
) |
|
$ |
1,068,825 |
|
|
Debt Securities Held-to-Maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
249,621 |
|
|
$ |
- |
|
|
$ |
(9,589 |
) |
|
$ |
240,032 |
|
|
Mortgage-backed securities
|
|
|
402,097 |
|
|
|
743 |
|
|
|
(34,395 |
) |
|
|
368,445 |
|
|
State and municipal securities
|
|
|
8,358 |
|
|
|
- |
|
|
|
(300 |
) |
|
|
8,058 |
|
|
Total
|
|
$ |
660,076 |
|
|
$ |
743 |
|
|
$ |
(44,284 |
) |
|
$ |
616,535 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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] |
| |
|
December 31, 2025
|
|
|
December 31, 2024
|
|
| |
|
Amortized Cost
|
|
|
Market Value
|
|
|
Amortized Cost
|
|
|
Market Value
|
|
| |
|
(In Thousands)
|
|
|
Debt securities available-for-sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Due within one year
|
|
$ |
441,619 |
|
|
$ |
443,833 |
|
|
$ |
223,145 |
|
|
$ |
223,477 |
|
|
Due from one to five years
|
|
|
147,475 |
|
|
|
147,058 |
|
|
|
478,868 |
|
|
|
475,985 |
|
|
Due from five to ten years
|
|
|
332,436 |
|
|
|
325,957 |
|
|
|
258,611 |
|
|
|
240,114 |
|
|
Due after ten years
|
|
|
18,657 |
|
|
|
18,673 |
|
|
|
3,000 |
|
|
|
2,550 |
|
|
Mortgage-backed securities
|
|
|
133,126 |
|
|
|
133,304 |
|
|
|
243,435 |
|
|
|
219,274 |
|
| |
|
$ |
1,073,313 |
|
|
$ |
1,068,825 |
|
|
$ |
1,207,059 |
|
|
$ |
1,161,400 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Debt securities held-to-maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Due within one year
|
|
$ |
53,787 |
|
|
$ |
52,811 |
|
|
$ |
250 |
|
|
$ |
250 |
|
|
Due from one to five years
|
|
|
204,192 |
|
|
|
195,279 |
|
|
|
256,743 |
|
|
|
236,586 |
|
|
Due from five to ten years
|
|
|
- |
|
|
|
- |
|
|
|
495 |
|
|
|
431 |
|
|
Due after ten years
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
|
- |
|
|
Mortgage-backed securities
|
|
|
402,097 |
|
|
|
368,445 |
|
|
|
457,365 |
|
|
|
402,229 |
|
| |
|
$ |
660,076 |
|
|
$ |
616,535 |
|
|
$ |
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)
|
|
|
December 31, 2025
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Debt Securities available-for-sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Mortgage-backed securities
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
(852 |
) |
|
$ |
22,662 |
|
|
$ |
(852 |
) |
|
$ |
22,662 |
|
|
State and municipal securities
|
|
|
- |
|
|
|
- |
|
|
|
(554 |
) |
|
|
9,363 |
|
|
|
(554 |
) |
|
|
9,363 |
|
|
Corporate debt
|
|
|
(984 |
) |
|
|
77,583 |
|
|
|
(8,226 |
) |
|
|
155,724 |
|
|
|
(9,210 |
) |
|
|
233,307 |
|
|
Total
|
|
$ |
(984 |
) |
|
$ |
77,583 |
|
|
$ |
(9,632 |
) |
|
$ |
187,749 |
|
|
$ |
(10,616 |
) |
|
$ |
265,332 |
|
|
Debt Securities held-to-maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
(9,589 |
) |
|
$ |
240,032 |
|
|
$ |
(9,589 |
) |
|
$ |
240,032 |
|
|
Mortgage-backed securities
|
|
|
- |
|
|
|
- |
|
|
|
(34,395 |
) |
|
|
325,307 |
|
|
|
(34,395 |
) |
|
|
325,307 |
|
|
State and municipal securities
|
|
|
(34 |
) |
|
|
2,954 |
|
|
|
(266 |
) |
|
|
4,604 |
|
|
|
(300 |
) |
|
|
7,558 |
|
|
Total
|
|
$ |
(34 |
) |
|
$ |
2,954 |
|
|
$ |
(44,250 |
) |
|
$ |
569,943 |
|
|
$ |
(44,284 |
) |
|
$ |
572,897 |
|
|
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 |
|
|
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] |
| |
|
Years Ended December 31,
|
|
| |
|
2025
|
|
|
2024
|
|
|
2023
|
|
| |
|
(In Thousands)
|
|
|
Sale proceeds
|
|
$ |
159,499 |
|
|
$ |
- |
|
|
$ |
- |
|
|
Gross realized gains
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
- |
|
|
Gross realized losses
|
|
|
(16,375 |
) |
|
|
- |
|
|
|
- |
|
|
Net realized (loss) gain
|
|
$ |
(16,375 |
) |
|
$ |
- |
|
|
$ |
- |
|
|