Note 4 - Securities (Tables)
|
3 Months Ended |
Mar. 31, 2025 |
|---|
| Notes Tables |
|
| Unrealized Gain (Loss) on Investments [Table Text Block] |
| |
|
|
|
|
|
Gross
|
|
|
Gross
|
|
|
|
|
|
| |
|
Amortized
|
|
|
Unrealized
|
|
|
Unrealized
|
|
|
Fair
|
|
| |
|
Cost
|
|
|
Gain
|
|
|
Loss
|
|
|
Value
|
|
|
March 31, 2025
|
|
(In Thousands)
|
|
|
Debt Securities Available-for-Sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
674,821 |
|
|
$ |
2,244 |
|
|
$ |
(2 |
) |
|
$ |
677,063 |
|
|
Mortgage-backed securities
|
|
|
232,819 |
|
|
|
398 |
|
|
|
(20,068 |
) |
|
|
213,149 |
|
|
State and municipal securities
|
|
|
10,514 |
|
|
|
1 |
|
|
|
(830 |
) |
|
|
9,685 |
|
|
Corporate debt
|
|
|
321,765 |
|
|
|
- |
|
|
|
(17,825 |
) |
|
|
303,940 |
|
|
Total
|
|
$ |
1,239,919 |
|
|
$ |
2,643 |
|
|
$ |
(38,725 |
) |
|
$ |
1,203,837 |
|
|
Debt Securities Held-to-Maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
249,457 |
|
|
$ |
- |
|
|
$ |
(15,765 |
) |
|
$ |
233,692 |
|
|
Mortgage-backed securities
|
|
|
444,165 |
|
|
|
109 |
|
|
|
(46,105 |
) |
|
|
398,169 |
|
|
State and municipal securities
|
|
|
8,091 |
|
|
|
- |
|
|
|
(497 |
) |
|
|
7,594 |
|
|
Total
|
|
$ |
701,713 |
|
|
$ |
109 |
|
|
$ |
(62,367 |
) |
|
$ |
639,455 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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] |
| |
|
March 31, 2025
|
|
|
December 31, 2024
|
|
| |
|
Amortized Cost
|
|
|
Market Value
|
|
|
Amortized Cost
|
|
|
Market Value
|
|
| |
|
(In Thousands)
|
|
|
Debt securities available-for-sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Due within one year
|
|
$ |
243,991 |
|
|
$ |
244,466 |
|
|
$ |
223,145 |
|
|
$ |
223,477 |
|
|
Due from one to five years
|
|
|
496,438 |
|
|
|
496,600 |
|
|
|
478,868 |
|
|
|
475,985 |
|
|
Due from five to ten years
|
|
|
263,270 |
|
|
|
246,647 |
|
|
|
258,611 |
|
|
|
240,114 |
|
|
Due after ten years
|
|
|
3,401 |
|
|
|
2,975 |
|
|
|
3,000 |
|
|
|
2,550 |
|
|
Mortgage-backed securities
|
|
|
232,819 |
|
|
|
213,149 |
|
|
|
243,435 |
|
|
|
219,274 |
|
| |
|
$ |
1,239,919 |
|
|
$ |
1,203,837 |
|
|
$ |
1,207,059 |
|
|
$ |
1,161,400 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Debt securities held-to-maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Due within one year
|
|
$ |
250 |
|
|
$ |
250 |
|
|
$ |
250 |
|
|
$ |
250 |
|
|
Due from one to five years
|
|
|
257,298 |
|
|
|
241,036 |
|
|
|
256,743 |
|
|
|
236,586 |
|
|
Due from five to ten years
|
|
|
- |
|
|
|
- |
|
|
|
495 |
|
|
|
431 |
|
|
Mortgage-backed securities
|
|
|
444,165 |
|
|
|
398,169 |
|
|
|
457,365 |
|
|
|
402,229 |
|
| |
|
$ |
701,713 |
|
|
$ |
639,455 |
|
|
$ |
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)
|
|
|
March 31, 2025
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Debt Securities available-for-sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
(2 |
) |
|
$ |
29,490 |
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
(2 |
) |
|
$ |
29,490 |
|
|
Mortgage-backed securities
|
|
|
(1 |
) |
|
|
351 |
|
|
|
(20,067 |
) |
|
|
174,934 |
|
|
|
(20,068 |
) |
|
|
175,285 |
|
|
State and municipal securities
|
|
|
- |
|
|
|
- |
|
|
|
(830 |
) |
|
|
9,240 |
|
|
|
(830 |
) |
|
|
9,240 |
|
|
Corporate debt
|
|
|
(413 |
) |
|
|
19,127 |
|
|
|
(17,412 |
) |
|
|
284,812 |
|
|
|
(17,825 |
) |
|
|
303,939 |
|
|
Total
|
|
$ |
(416 |
) |
|
$ |
48,968 |
|
|
$ |
(38,309 |
) |
|
$ |
468,986 |
|
|
$ |
(38,725 |
) |
|
$ |
517,954 |
|
|
Debt Securities held-to-maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury securities
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
(15,765 |
) |
|
$ |
233,692 |
|
|
$ |
(15,765 |
) |
|
$ |
233,692 |
|
|
Mortgage-backed securities
|
|
|
(194 |
) |
|
|
27,978 |
|
|
|
(45,911 |
) |
|
|
352,468 |
|
|
|
(46,105 |
) |
|
|
380,446 |
|
|
State and municipal securities
|
|
|
- |
|
|
|
- |
|
|
|
(497 |
) |
|
|
7,344 |
|
|
|
(497 |
) |
|
|
7,344 |
|
|
Total
|
|
$ |
(194 |
) |
|
$ |
27,978 |
|
|
$ |
(62,173 |
) |
|
$ |
593,504 |
|
|
$ |
(62,367 |
) |
|
$ |
621,482 |
|
|
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 |
|
|