Note 4 - Securities (Tables)
|
9 Months Ended |
Sep. 30, 2024 |
Notes Tables |
|
Unrealized Gain (Loss) on Investments [Table Text Block] |
|
|
|
|
|
|
Gross
|
|
|
Gross
|
|
|
|
|
|
|
|
Amortized
|
|
|
Unrealized
|
|
|
Unrealized
|
|
|
Fair
|
|
|
|
Cost
|
|
|
Gain
|
|
|
Loss
|
|
|
Value
|
|
September 30, 2024
|
|
(In Thousands)
|
|
Debt Securities Available-for-Sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury Securities
|
|
$ |
566,247 |
|
|
$ |
1,077 |
|
|
$ |
- |
|
|
$ |
567,324 |
|
Mortgage-backed securities
|
|
|
256,622 |
|
|
|
798 |
|
|
|
(19,120 |
) |
|
|
238,300 |
|
State and municipal securities
|
|
|
10,543 |
|
|
|
1 |
|
|
|
(826 |
) |
|
|
9,718 |
|
Corporate debt
|
|
|
350,700 |
|
|
|
13 |
|
|
|
(27,048 |
) |
|
|
323,665 |
|
Total
|
|
$ |
1,184,112 |
|
|
$ |
1,889 |
|
|
$ |
(46,994 |
) |
|
$ |
1,139,007 |
|
Debt Securities Held-to-Maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury Securities
|
|
$ |
249,349 |
|
|
$ |
- |
|
|
$ |
(16,226 |
) |
|
$ |
233,123 |
|
Mortgage-backed securities
|
|
|
471,151 |
|
|
|
565 |
|
|
|
(39,398 |
) |
|
|
432,318 |
|
State and municipal securities
|
|
|
8,080 |
|
|
|
- |
|
|
|
(498 |
) |
|
|
7,582 |
|
Total
|
|
$ |
728,580 |
|
|
$ |
565 |
|
|
$ |
(56,122 |
) |
|
$ |
673,023 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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 |
|
|
|
- |
|
|
|
(42,009 |
) |
|
|
333,667 |
|
Total
|
|
$ |
969,090 |
|
|
$ |
258 |
|
|
$ |
(69,166 |
) |
|
$ |
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] |
|
|
September 30, 2024
|
|
|
December 31, 2023
|
|
|
|
Amortized Cost
|
|
|
Fair Value
|
|
|
Amortized Cost
|
|
|
Fair Value
|
|
|
|
(In Thousands)
|
|
Debt securities available-for-sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Due within one year
|
|
$ |
523,255 |
|
|
$ |
523,759 |
|
|
$ |
350,400 |
|
|
$ |
350,396 |
|
Due from one to five years
|
|
|
118,734 |
|
|
|
116,395 |
|
|
|
70,016 |
|
|
|
67,334 |
|
Due from five to ten years
|
|
|
282,501 |
|
|
|
258,273 |
|
|
|
304,216 |
|
|
|
264,893 |
|
Due after ten years
|
|
|
3,000 |
|
|
|
2,280 |
|
|
|
3,000 |
|
|
|
2,076 |
|
Mortgage-backed securities
|
|
|
256,622 |
|
|
|
238,300 |
|
|
|
241,458 |
|
|
|
215,485 |
|
|
|
$ |
1,184,112 |
|
|
$ |
1,139,007 |
|
|
$ |
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
|
|
|
256,684 |
|
|
|
240,011 |
|
|
|
203,481 |
|
|
|
185,741 |
|
Due from five to ten years
|
|
|
495 |
|
|
|
444 |
|
|
|
53,521 |
|
|
|
48,022 |
|
Mortgage-backed securities
|
|
|
471,151 |
|
|
|
432,318 |
|
|
|
465,615 |
|
|
|
415,593 |
|
|
|
$ |
728,580 |
|
|
$ |
673,023 |
|
|
$ |
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)
|
|
September 30, 2024
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Debt Securities available-for-sale
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Mortgage-backed securities
|
|
$ |
- |
|
|
$ |
1 |
|
|
$ |
(19,120 |
) |
|
$ |
193,011 |
|
|
$ |
(19,120 |
) |
|
$ |
193,012 |
|
State and municipal securities
|
|
|
- |
|
|
|
- |
|
|
|
(826 |
) |
|
|
9,273 |
|
|
|
(826 |
) |
|
|
9,273 |
|
Corporate debt
|
|
|
(1,505 |
) |
|
|
20,420 |
|
|
|
(25,544 |
) |
|
|
298,260 |
|
|
|
(27,048 |
) |
|
|
318,680 |
|
Total
|
|
$ |
(1,505 |
) |
|
$ |
20,421 |
|
|
$ |
(45,490 |
) |
|
$ |
500,544 |
|
|
$ |
(46,994 |
) |
|
$ |
520,965 |
|
Debt Securities held-to-maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
U.S. Treasury Securities
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
(16,226 |
) |
|
$ |
233,124 |
|
|
$ |
(16,226 |
) |
|
$ |
233,123 |
|
Mortgage-backed securities
|
|
|
- |
|
|
|
2,061 |
|
|
|
(39,398 |
) |
|
|
383,853 |
|
|
|
(39,398 |
) |
|
|
385,914 |
|
State and municipal securities
|
|
|
- |
|
|
|
- |
|
|
|
(498 |
) |
|
|
7,332 |
|
|
|
(498 |
) |
|
|
7,332 |
|
Total
|
|
$ |
- |
|
|
$ |
2,061 |
|
|
$ |
(56,122 |
) |
|
$ |
624,309 |
|
|
$ |
(56,122 |
) |
|
$ |
626,369 |
|
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 |
|
Debt Securities held-to-maturity
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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 |
|
|