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v3.23.3

SECURITIES (Tables) | 9 Months Ended
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Sep. 30, 2023
SECURITIES |
Schedule of major categories of securities owned by entity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2023
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(In thousands) |  | Cost |  | Gains |  | Losses |  | Value
Securities available-for-sale: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Agency notes | ​ | $ | 10,000 | ​ | $ | — | ​ | $ | (857) | ​ | $ | 9,143
Treasury securities | ​ | ​ | 246,135 | ​ | ​ | — | ​ | ​ | (16,262) | ​ | ​ | 229,873
Corporate securities | ​ |  | 169,549 | ​ |  | — | ​ |  | (28,462) | ​ |  | 141,087
Pass-through mortgage-backed securities ("MBS") issued by government sponsored entities ("GSEs") | ​ |  | 239,509 | ​ |  | — | ​ |  | (33,306) | ​ |  | 206,203
Agency collateralized mortgage obligations ("CMOs") | ​ |  | 311,632 | ​ |  | 21 | ​ |  | (56,011) | ​ |  | 255,642
State and municipal obligations | ​ | ​ | 30,845 | ​ | ​ | — | ​ | ​ | (2,914) | ​ | ​ | 27,931
Total securities available-for-sale | ​ | $ | 1,007,670 | ​ | $ | 21 | ​ | $ | (137,812) | ​ | $ | 869,879
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2023
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrecognized | ​ | Unrecognized | ​ | Fair
(In thousands) |  | Cost |  | Gains |  | Losses |  | Value
Securities held-to-maturity: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Agency notes | ​ | $ | 89,461 | ​ | $ | — | ​ | $ | (15,305) | ​ | $ | 74,156
Corporate securities | ​ | ​ | 9,000 | ​ | ​ | — | ​ | ​ | (1,945) | ​ | ​ | 7,055
Pass-through MBS issued by GSEs | ​ | ​ | 283,258 | ​ | ​ | — | ​ | ​ | (53,777) | ​ | ​ | 229,481
Agency CMOs | ​ |  | 218,572 | ​ |  | — | ​ |  | (33,278) | ​ |  | 185,294
Total securities held-to-maturity | ​ | $ | 600,291 | ​ | $ | — | ​ | $ | (104,305) | ​ | $ | 495,986
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2022
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(In thousands) |  | Cost |  | Gains |  | Losses |  | Value
Securities available-for-sale: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Treasury securities | ​ | $ | 246,899 | ​ | $ | — | ​ | $ | (19,643) | ​ | $ | 227,256
Corporate securities | ​ | ​ | 183,791 | ​ |  | 57 | ​ |  | (17,075) | ​ |  | 166,773
Pass-through MBS issued by GSEs | ​ |  | 272,774 | ​ |  | — | ​ |  | (31,534) | ​ |  | 241,240
Agency CMOs | ​ |  | 331,394 | ​ |  | 2 | ​ |  | (50,057) | ​ |  | 281,339
State and municipal obligations | ​ |  | 37,000 | ​ | ​ | — | ​ | ​ | (3,021) | ​ | ​ | 33,979
Total securities available-for-sale | ​ | $ | 1,071,858 | ​ | $ | 59 | ​ | $ | (121,330) | ​ | $ | 950,587
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2022
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrecognized | ​ | Unrecognized | ​ | Fair
(In thousands) |  | Cost |  | Gains |  | Losses |  | Value
Securities held-to-maturity: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Agency notes | ​ | $ | 89,157 | ​ | $ | — | ​ | $ | (14,095) | ​ | $ | 75,062
Corporate securities | ​ | ​ | 9,000 | ​ | ​ | — | ​ | ​ | (553) | ​ | ​ | 8,447
Pass-through MBS issued by GSEs | ​ | ​ | 278,281 | ​ | ​ | — | ​ | ​ | (40,960) | ​ | ​ | 237,321
Agency CMOs | ​ |  | 209,360 | ​ |  | — | ​ |  | (24,431) | ​ |  | 184,929
Total securities held-to-maturity | ​ | $ | 585,798 | ​ | $ | — | ​ | $ | (80,039) | ​ | $ | 505,759
Schedule of amortized cost and fair value of debt securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2023
​ | ​ | Amortized | ​ | Fair
(In thousands) | ​ | Cost | ​ | Value
Available-for-sale | ​ | ​ | ​ | ​ | ​ | ​
Within one year | ​ | $ | 83,132 | ​ | $ | 80,015
One to five years | ​ | ​ | 206,284 | ​ | ​ | 188,885
Five to ten years | ​ | ​ | 167,113 | ​ | ​ | 139,134
Beyond ten years | ​ | ​ | — | ​ | ​ | —
Pass-through MBS issued by GSEs and agency CMO | ​ | ​ | 551,141 | ​ | ​ | 461,845
Total | ​ | $ | 1,007,670 | ​ | $ | 869,879
​ | ​ | ​ | ​ | ​ | ​ | ​
Held-to-maturity | ​ | ​ | ​ | ​ | ​ | ​
Within one year | ​ | $ | — | ​ | $ | —
One to five years | ​ | ​ | 19,772 | ​ | ​ | 17,743
Five to ten years | ​ | ​ | 78,689 | ​ | ​ | 63,468
Beyond ten years | ​ | ​ | — | ​ | ​ | —
Pass-through MBS issued by GSEs and agency CMO | ​ | ​ | 501,830 | ​ | ​ | 414,775
Total | ​ | $ | 600,291 | ​ | $ | 495,986
​ | ​ | ​ | ​ | ​ | ​ | ​
Summary of sale of available-for-sale securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended
​ | ​ | September 30, | ​ | September 30,
(In thousands) |  | 2023 |  | 2022 | ​ | 2023 |  | 2022
Securities available-for-sale | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Proceeds | ​ | $ | — | ​ | $ | — | ​ | $ | 77,804 | ​ | $ | —
Gross gains | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 130 | ​ | ​ | —
Tax expense on gains | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 39 | ​ | ​ | —
Gross losses | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,577 | ​ | ​ | —
Tax benefit on losses | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 467 | ​ | ​ | —
Schedule of gross unrealized losses and fair value of investment securities by investment category and length of time in a continuous unrealized loss position | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2023
​ | ​ | Less than 12 | ​ | 12 Consecutive | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Consecutive Months | ​ | Months or Longer | ​ | Total
​ | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized
(In thousands) |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
Securities available-for-sale: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Agency notes | ​ | $ | — | ​ | $ | — | ​ | $ | 9,143 | ​ | $ | 857 | ​ | $ | 9,143 | ​ | $ | 857
Treasury securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 229,873 | ​ | ​ | 16,262 | ​ | ​ | 229,873 | ​ | ​ | 16,262
Corporate securities | ​ | ​ | 19,118 | ​ | ​ | 2,248 | ​ | ​ | 121,969 | ​ | ​ | 26,214 | ​ | ​ | 141,087 | ​ | ​ | 28,462
Pass-through MBS issued by GSEs | ​ | ​ | 904 | ​ | ​ | 12 | ​ | ​ | 205,299 | ​ | ​ | 33,294 | ​ | ​ | 206,203 | ​ | ​ | 33,306
Agency CMOs | ​ | ​ | 2,427 | ​ | ​ | 41 | ​ | ​ | 248,193 | ​ | ​ | 55,970 | ​ | ​ | 250,620 | ​ | ​ | 56,011
State and municipal obligations | ​ |  | 1,713 | ​ |  | 137 | ​ |  | 26,218 | ​ |  | 2,777 | ​ | ​ | 27,931 | ​ | ​ | 2,914
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2022
​ | ​ | Less than 12 | ​ | 12 Consecutive | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Consecutive Months | ​ | Months or Longer | ​ | Total
​ | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized
(In thousands) |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
Securities available-for-sale: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Treasury securities | ​ | $ | — | ​ | $ | — | ​ | $ | 227,256 | ​ | $ | 19,643 | ​ | $ | 227,256 | ​ | $ | 19,643
Corporate securities | ​ | ​ | 110,707 | ​ | ​ | 8,494 | ​ | ​ | 50,116 | ​ | ​ | 8,581 | ​ | ​ | 160,823 | ​ | ​ | 17,075
Pass-through MBS issued by GSEs | ​ | ​ | 50,813 | ​ | ​ | 2,010 | ​ | ​ | 190,427 | ​ | ​ | 29,524 | ​ | ​ | 241,240 | ​ | ​ | 31,534
Agency CMOs | ​ | ​ | 55,924 | ​ | ​ | 3,454 | ​ | ​ | 220,413 | ​ | ​ | 46,603 | ​ | ​ | 276,337 | ​ | ​ | 50,057
State and municipal obligations | ​ | ​ | 10,848 | ​ |  | 174 | ​ |  | 22,681 | ​ |  | 2,847 | ​ | ​ | 33,529 | ​ | ​ | 3,021

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