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Investments (Tables) | 9 Months Ended
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Sep. 30, 2024
Investments [Abstract] |
Unrealized Gain (Loss) On Investments |
(Dollars in thousands) |  |  |  |  | Gross |  | Gross |  |  |
|  | Amortized |  | unrealized |  | unrealized |  | Fair
September 30, 2024 |  | cost |  | gains |  | losses |  | Value
U.S. Treasury |  | $ | 82,959 |  | $ | — |  | $ | (7,271) |  | $ | 75,688
Municipal |  |  | 158,133 |  |  | — |  |  | (18,411) |  |  | 139,722
Corporate |  |  | 26,351 |  |  | 1 |  |  | (2,031) |  |  | 24,321
Agency mortgage & asset-backed |  |  | 127,867 |  |  | 147 |  |  | (7,312) |  |  | 120,702
Non-Agency mortgage & asset-backed |  |  | 107,863 |  |  | 516 |  |  | (2,327) |  |  | 106,052
Total |  | $ | 503,173 |  | $ | 664 |  | $ | (37,352) |  | $ | 466,485
(Dollars in thousands) |  |  |  |  | Gross |  | Gross |  |  |
|  | Amortized |  | unrealized |  | unrealized |  | Fair
December 31, 2023 |  | cost |  | gains |  | losses |  | value
U.S. Treasury |  | $ | 83,494 |  | $ | — |  | $ | (9,403) |  | $ | 74,091
Municipal |  |  | 161,339 |  |  | — |  |  | (22,721) |  |  | 138,618
Corporate |  |  | 26,336 |  |  | — |  |  | (3,138) |  |  | 23,198
Agency mortgage & asset-backed |  |  | 142,565 |  |  | 90 |  |  | (10,064) |  |  | 132,591
Non-Agency mortgage & asset-backed |  |  | 108,185 |  |  | 48 |  |  | (4,228) |  |  | 104,005
Total |  | $ | 521,919 |  | $ | 138 |  | $ | (49,554) |  | $ | 472,503
Amortized Cost And Fair Value Of Debt Securities, By Contractual Maturity |
(Dollars in thousands) |  | Amortized ‎cost |  | Fair ‎value
Due in one year or less |  | $ | — |  | $ | —
Due after one year through five years |  |  | 84,976 |  |  | 78,189
Due after five years through ten years |  |  | 79,998 |  |  | 72,194
Due after ten years |  |  | 102,469 |  |  | 89,348
|  |  | 267,443 |  |  | 239,731
Mortgage & asset-backed |  |  | 235,730 |  |  | 226,754
|  | $ | 503,173 |  | $ | 466,485
Composition Of Net Realized Securities Gains (Losses) |
|  | For the Three Months Ended |  | For the Nine Months Ended
|  | September 30, |  | September 30,
(Dollars in thousands) |  | 2024 |  | 2023 |  | 2024 |  | 2023
Proceeds |  | $ | — |  | $ | — |  | $ | — |  | $ | 40,117
Gross gains realized |  | $ | — |  | $ | — |  | $ | — |  | $ | 12
Gross losses realized |  |  | — |  |  | — |  |  | — |  |  | (1,131)
Net (losses) gains realized |  | $ | — |  | $ | — |  | $ | — |  | $ | (1,119)
Tax benefit (provision) on net (losses) gains realized |  | $ | — |  | $ | — |  | $ | — |  | $ | 235
Schedule Of Unrealized Loss On Investments |
| September 30, 2024
| Less than 12 months |  | 12 months or more |  | Total
| Fair |  | Unrealized |  |  |  | Fair |  | Unrealized |  |  |  | Fair |  | Unrealized |  |
(Dollars in thousands) | Value |  | Losses |  | Count |  | Value |  | Losses |  | Count |  | Value |  | Losses |  | Count
U.S. Treasury | $ | — |  | $ | — |  | — |  | $ | 75,688 |  | $ | (7,271) |  | 28 |  | $ | 75,688 |  | $ | (7,271) |  | 28
Municipal |  | — |  |  | — |  | — |  |  | 139,722 |  |  | (18,411) |  | 166 |  |  | 139,722 |  |  | (18,411) |  | 166
Corporate |  | — |  |  | — |  | — |  |  | 23,335 |  |  | (2,031) |  | 50 |  |  | 23,335 |  |  | (2,031) |  | 50
Agency mortgage & asset-backed |  | 1,562 |  |  | (2) |  | 4 |  |  | 107,560 |  |  | (7,310) |  | 223 |  |  | 109,122 |  |  | (7,312) |  | 227
Non-Agency mortgage & asset-backed |  | 10,508 |  |  | (41) |  | 5 |  |  | 72,532 |  |  | (2,286) |  | 58 |  |  | 83,040 |  |  | (2,327) |  | 63
Total temporarily impaired | $ | 12,070 |  | $ | (43) |  | 9 |  | $ | 418,837 |  | $ | (37,309) |  | 525 |  | $ | 430,907 |  | $ | (37,352) |  | 534
| December 31, 2023
| Less than 12 months |  | 12 months or more |  | Total
| Fair |  | Unrealized |  |  |  | Fair |  | Unrealized |  |  |  | Fair |  | Unrealized |  |
(Dollars in thousands) | Value |  | Losses |  | Count |  | Value |  | Losses |  | Count |  | Value |  | Losses |  | Count
U.S. Treasury | $ | — |  | $ | — |  | — |  | $ | 74,091 |  | $ | (9,403) |  | 28 |  | $ | 74,091 |  | $ | (9,403) |  | 28
Municipal |  | — |  |  | — |  | — |  |  | 138,618 |  |  | (22,721) |  | 168 |  |  | 138,618 |  |  | (22,721) |  | 168
Corporate |  | 1,483 |  |  | (167) |  | 5 |  |  | 21,715 |  |  | (2,971) |  | 46 |  |  | 23,198 |  |  | (3,138) |  | 51
Agency mortgage & asset-backed |  | 6,227 |  |  | (186) |  | 19 |  |  | 118,053 |  |  | (9,878) |  | 223 |  |  | 124,280 |  |  | (10,064) |  | 242
Non-Agency mortgage & asset-backed |  | 47,928 |  |  | (560) |  | 19 |  |  | 50,071 |  |  | (3,668) |  | 56 |  |  | 97,999 |  |  | (4,228) |  | 75
Total temporarily impaired | $ | 55,638 |  | $ | (913) |  | 43 |  | $ | 402,548 |  | $ | (48,641) |  | 521 |  | $ | 458,186 |  | $ | (49,554) |  | 564

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