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INVESTMENT SECURITIES (Tables) | 3 Months Ended
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Mar. 31, 2023
INVESTMENT SECURITIES |
Schedule of investment securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | March 31, 2023
​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
​ |  | (In Thousands)
AVAILABLE-FOR-SALE SECURITIES: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency mortgage-backed securities |  | $ | 323,471 |  | $ | — |  | $ | 36,083 |  | $ | 287,388
Agency collateralized mortgage obligations | ​ | ​ | 89,673 | ​ | ​ | — | ​ | ​ | 9,914 | ​ | ​ | 79,759
States and political subdivisions | ​ | ​ | 59,533 | ​ | ​ | 379 | ​ | ​ | 2,006 | ​ | ​ | 57,906
Small Business Administration securities | ​ | ​ | 74,103 | ​ | ​ | 132 | ​ | ​ | 5,958 | ​ | ​ | 68,277
​ |  | $ | 546,780 |  | $ | 511 |  | $ | 53,961 |  | $ | 493,330
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2022
​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
​ |  | (In Thousands)
AVAILABLE-FOR-SALE SECURITIES: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency mortgage-backed securities |  | $ | 327,266 |  | $ | — |  | $ | 40,784 |  | $ | 286,482
Agency collateralized mortgage obligations | ​ | ​ | 90,205 | ​ | ​ | — | ​ | ​ | 11,731 | ​ | ​ | 78,474
States and political subdivisions securities | ​ | ​ | 60,667 | ​ | ​ | 119 | ​ | ​ | 3,291 | ​ | ​ | 57,495
Small Business Administration securities | ​ | ​ | 75,076 | ​ | ​ | — | ​ | ​ | 6,935 | ​ | ​ | 68,141
​ |  | $ | 553,214 |  | $ | 119 |  | $ | 62,741 |  | $ | 490,592
Schedule of amortized cost and fair values of securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2023
​ | ​ | ​ | ​ | ​ | ​ | Amortized | ​ | Gross | ​ | Gross | ​ | ​
​ | ​ | Amortized | ​ | Fair Value | ​ | Carrying | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ | ​ | Cost | ​ | Adjustment | ​ | Value | ​ | Gains | ​ | Losses | ​ | Value
​ | ​ | (In Thousands)
HELD-TO-MATURITY SECURITIES: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Agency mortgage-backed securities | ​ | $ | 73,612 | ​ | $ | 2,870 | ​ | $ | 76,482 | ​ | $ | — | ​ | $ | 8,247 | ​ | $ | 68,235
Agency collateralized mortgage obligations | ​ |  | 120,494 | ​ |  | (2,767) | ​ |  | 117,727 | ​ |  | — | ​ |  | 11,735 | ​ |  | 105,992
States and political subdivisions | ​ |  | 6,226 | ​ |  | (8) | ​ |  | 6,218 | ​ |  | — | ​ |  | 592 | ​ |  | 5,626
​ | ​ | $ | 200,332 | ​ | $ | 95 | ​ | $ | 200,427 | ​ | $ | — | ​ | $ | 20,574 | ​ | $ | 179,853
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2022
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Amortized | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Fair Value | ​ | Carrying | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ |  | Cost |  | Adjustment |  | Value |  | Gains |  | Losses |  | Value
​ | ​ | (In Thousands)
HELD-TO-MATURITY SECURITIES: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Agency mortgage-backed securities | ​ | $ | 73,891 | ​ | $ | 3,015 | ​ | $ | 76,906 | ​ | $ | — | ​ | $ | 9,820 | ​ | $ | 67,086
Agency collateralized mortgage obligations | ​ |  | 122,247 | ​ |  | (2,885) | ​ |  | 119,362 | ​ |  | — | ​ |  | 14,129 | ​ |  | 105,233
States and political subdivisions | ​ |  | 6,239 | ​ |  | (12) | ​ |  | 6,227 | ​ |  | — | ​ |  | 781 | ​ |  | 5,446
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | $ | 202,377 | ​ | $ | 118 | ​ | $ | 202,495 | ​ | $ | — | ​ | $ | 24,730 | ​ | $ | 177,765
​
Schedule of amortized cost and fair value of available-for-sale and held-to-maturity securities by contractual maturity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Available-for-Sale | ​ | Held-to-Maturity
​ | ​ | Amortized | ​ | Fair | ​ | Amortized |  | Fair
​ |  | Cost |  | Value |  | Carrying Value |  | Value
​ | ​ | (In Thousands)
One year or less | ​ | $ | — | ​ | $ | — | ​ | $ | — |  | $ | —
After one through two years | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
After two through three years | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
After three through four years | ​ | ​ | 245 | ​ | ​ | 246 | ​ | ​ | — | ​ | ​ | —
After four through five years | ​ | ​ | 927 | ​ | ​ | 952 | ​ | ​ | — | ​ | ​ | —
After five through fifteen years | ​ | ​ | 6,390 | ​ | ​ | 6,200 | ​ | ​ | 3,251 | ​ | ​ | 2,952
After fifteen years | ​ | ​ | 51,971 | ​ | ​ | 50,508 | ​ | ​ | 2,967 | ​ | ​ | 2,674
Securities not due on a single maturity date | ​ | ​ | 487,247 | ​ | ​ | 435,424 | ​ | ​ | 194,209 | ​ | ​ | 174,227
​ | ​ | $ | 546,780 | ​ | $ | 493,330 | ​ | $ | 200,427 |  | $ | 179,853
​
Schedule of fair value and unrealized loss for available-for-sale securities and held-to-maturity securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2023
​ | ​ | Less than 12 Months | ​ | 12 Months or More | ​ | Total
​ | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized
Description of Securities |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
​ |  | (In Thousands)
AVAILABLE-FOR-SALE SECURITIES: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency mortgage-backed securities |  | $ | 28,167 |  | $ | (2,019) |  | $ | 259,221 |  | $ | (34,064) |  | $ | 287,388 |  | $ | (36,083)
Agency collateralized mortgage obligations | ​ | ​ | 20,534 | ​ | ​ | (826) | ​ | ​ | 59,226 | ​ | ​ | (9,088) | ​ | ​ | 79,760 | ​ | ​ | (9,914)
States and political subdivisions securities | ​ | ​ | 18,117 | ​ | ​ | (597) | ​ | ​ | 22,548 | ​ | ​ | (1,409) | ​ | ​ | 40,665 | ​ | ​ | (2,006)
Small Business Administration securities | ​ | ​ | 18,507 | ​ | ​ | (1,245) | ​ | ​ | 41,407 | ​ | ​ | (4,713) | ​ | ​ | 59,914 | ​ | ​ | (5,958)
​ |  | $ | 85,325 |  | $ | (4,687) |  | $ | 382,402 |  | $ | (49,274) |  | $ | 467,727 |  | $ | (53,961)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
HELD-TO-MATURITY SECURITIES: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency mortgage-backed securities | ​ | $ | — | ​ | $ | — | ​ | $ | 68,235 | ​ | $ | (8,247) | ​ | $ | 68,235 | ​ | $ | (8,247)
Agency collateralized mortgage obligations | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 105,992 | ​ | ​ | (11,735) | ​ | ​ | 105,992 | ​ | ​ | (11,735)
States and political subdivisions securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 5,626 | ​ | ​ | (592) | ​ | ​ | 5,626 | ​ | ​ | (592)
​ | ​ | $ | — | ​ | $ | — | ​ | $ | 179,853 | ​ | $ | (20,574) | ​ | $ | 179,853 | ​ | $ | (20,574)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2022
​ | ​ | Less than 12 Months | ​ | 12 Months or More | ​ | Total
​ | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized
Description of Securities |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
​ |  | (In Thousands)
AVAILABLE-FOR-SALE SECURITIES: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency mortgage-backed securities |  | $ | 221,562 |  | $ | (27,597) |  | $ | 64,918 |  | $ | (13,187) |  | $ | 286,480 |  | $ | (40,784)
Agency collateralized mortgage obligations | ​ | ​ | 28,537 | ​ | ​ | (3,262) | ​ | ​ | 40,642 | ​ | ​ | (8,469) | ​ | ​ | 69,179 | ​ | ​ | (11,731)
States and political subdivisions securities | ​ | ​ | 60,473 | ​ | ​ | (5,224) | ​ | ​ | 7,667 | ​ | ​ | (1,711) | ​ | ​ | 68,140 | ​ | ​ | (6,935)
Small Business Administration securities | ​ | ​ | 44,455 | ​ | ​ | (2,913) | ​ | ​ | 3,753 | ​ | ​ | (378) | ​ | ​ | 48,208 | ​ | ​ | (3,291)
​ |  | $ | 355,027 | ​ | $ | (38,996) |  | $ | 116,980 | ​ | $ | (23,745) |  | $ | 472,007 | ​ | $ | (62,741)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
HELD-TO-MATURITY SECURITIES: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Agency mortgage-backed securities | ​ | $ | 59,218 | ​ | $ | (7,766) | ​ | $ | 7,868 | ​ | $ | (2,054) | ​ | $ | 67,086 | ​ | $ | (9,820)
Agency collateralized mortgage obligations | ​ | ​ | 61,055 | ​ | ​ | (6,411) | ​ | ​ | 44,178 | ​ | ​ | (7,718) | ​ | ​ | 105,233 | ​ | ​ | (14,129)
States and political subdivisions securities | ​ | ​ | 900 | ​ | ​ | (101) | ​ | ​ | 4,546 | ​ | ​ | (680) | ​ | ​ | 5,446 | ​ | ​ | (781)
​ | ​ | $ | 121,173 | ​ | $ | (14,278) | ​ | $ | 56,592 | ​ | $ | (10,452) | ​ | $ | 177,765 | ​ | $ | (24,730)
​

X
- Definition Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and amortized cost (held-to-maturity), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References No definition available. + Details
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