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Investments (Tables) | 6 Months Ended
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Jun. 30, 2024
Investments [Abstract] |
Unrealized Gain (Loss) On Investments |
(Dollars in thousands) |  |  |  |  | Gross |  | Gross |  |  |
|  | Amortized |  | unrealized |  | unrealized |  | Fair
June 30, 2024 |  | cost |  | gains |  | losses |  | Value
U.S. Treasury |  | $ | 83,139 |  | $ | — |  | $ | (10,119) |  | $ | 73,020
Municipal |  |  | 158,445 |  |  | — |  |  | (23,744) |  |  | 134,701
Corporate |  |  | 26,346 |  |  | — |  |  | (2,658) |  |  | 23,688
Agency mortgage & asset-backed |  |  | 133,119 |  |  | 187 |  |  | (9,523) |  |  | 123,783
Non-Agency mortgage & asset-backed |  |  | 102,758 |  |  | 34 |  |  | (3,519) |  |  | 99,273
Total |  | $ | 503,807 |  | $ | 221 |  | $ | (49,563) |  | $ | 454,465
(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 |  |  | 85,160 |  |  | 75,619
Due after five years through ten years |  |  | 80,052 |  |  | 69,302
Due after ten years |  |  | 102,718 |  |  | 86,488
|  |  | 267,930 |  |  | 231,409
Mortgage & asset-backed |  |  | 235,877 |  |  | 223,056
|  | $ | 503,807 |  | $ | 454,465
Composition Of Net Realized Securities Gains (Losses) |
|  | For the Three Months Ended |  | For the Six Months Ended
|  | June 30, |  | June 30,
(Dollars in thousands) |  | 2024 |  | 2023 |  | 2024 |  | 2023
Proceeds |  | $ | — |  | $ | 7,262 |  | $ | — |  | $ | 40,117
Gross gains realized |  | $ | — |  | $ | — |  | $ | — |  | $ | 12
Gross losses realized |  |  | — |  |  | (517) |  |  | — |  |  | (1,131)
Net (losses) gains realized |  | $ | — |  | $ | (517) |  | $ | — |  | $ | (1,119)
Tax benefit (provision) on net (losses) gains realized |  | $ | — |  | $ | 109 |  | $ | — |  | $ | 235
Schedule Of Unrealized Loss On Investments |
| June 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 | $ | — |  | $ | — |  | — |  | $ | 73,020 |  | $ | (10,119) |  | 226 |  | $ | 73,020 |  | $ | (10,119) |  | 226
Municipal |  | — |  |  | — |  | — |  |  | 134,701 |  |  | (23,744) |  | 50 |  |  | 134,701 |  |  | (23,744) |  | 50
Corporate |  | 978 |  |  | (5) |  | 1 |  |  | 22,710 |  |  | (2,653) |  | 166 |  |  | 23,688 |  |  | (2,658) |  | 167
Agency mortgage & asset-backed |  | 745 |  |  | (10) |  | 4 |  |  | 108,925 |  |  | (9,513) |  | 57 |  |  | 109,670 |  |  | (9,523) |  | 61
Non-Agency mortgage & asset-backed |  | 38,658 |  |  | (194) |  | 19 |  |  | 57,302 |  |  | (3,325) |  | 28 |  |  | 95,960 |  |  | (3,519) |  | 47
Total temporarily impaired | $ | 40,381 |  | $ | (209) |  | 24 |  | $ | 396,658 |  | $ | (49,354) |  | 527 |  | $ | 437,039 |  | $ | (49,563) |  | 551
| 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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