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Investments (Tables) | 3 Months Ended
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Mar. 31, 2024
Investments [Abstract] |
Unrealized Gain (Loss) On Investments |
(Dollars in thousands) |  |  |  |  | Gross |  | Gross |  |  |
|  | Amortized |  | unrealized |  | unrealized |  | Fair
March 31, 2024 |  | cost |  | gains |  | losses |  | Value
U.S. Treasury |  | $ | 83,317 |  | $ | — |  | $ | (10,207) |  | $ | 73,110
Municipal |  |  | 161,016 |  |  | — |  |  | (23,560) |  |  | 137,456
Corporate |  |  | 26,341 |  |  | 1 |  |  | (2,890) |  |  | 23,452
Agency mortgage & asset-backed |  |  | 137,883 |  |  | 161 |  |  | (9,718) |  |  | 128,326
Non-Agency mortgage & asset-backed |  |  | 104,183 |  |  | 36 |  |  | (3,612) |  |  | 100,607
Total |  | $ | 512,740 |  | $ | 198 |  | $ | (49,987) |  | $ | 462,951
(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 |  |  | 78,032 |  |  | 69,240
Due after five years through ten years |  |  | 87,037 |  |  | 75,338
Due after ten years |  |  | 105,605 |  |  | 89,440
|  |  | 270,674 |  |  | 234,018
Mortgage & asset-backed |  |  | 242,066 |  |  | 228,933
|  | $ | 512,740 |  | $ | 462,951
Composition Of Net Realized Securities Gains (Losses) |
|  | For the Three Months Ended
|  | March 31,
(Dollars in thousands) |  | 2024 |  | 2023
Proceeds |  | $ | — |  | $ | 32,855
Gross gains realized |  | $ | — |  | $ | 12
Gross losses realized |  |  | — |  |  | (614)
Net (losses) gains realized |  | $ | — |  | $ | (602)
Tax benefit (provision) on net (losses) gains realized |  | $ | — |  | $ | 126
Schedule Of Unrealized Loss On Investments |
| March 31, 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 | $ | — |  | $ | — |  | — |  | $ | 73,110 |  | $ | (10,207) |  | 28 |  | $ | 73,110 |  | $ | (10,207) |  | 28
Municipal |  | — |  |  | — |  | — |  |  | 137,456 |  |  | (23,560) |  | 168 |  |  | 137,456 |  |  | (23,560) |  | 168
Corporate |  | — |  |  | — |  | — |  |  | 22,470 |  |  | (2,890) |  | 50 |  |  | 22,470 |  |  | (2,890) |  | 50
Agency mortgage & asset-backed |  | 2,116 |  |  | (17) |  | 12 |  |  | 111,772 |  |  | (9,701) |  | 221 |  |  | 113,888 |  |  | (9,718) |  | 233
Non-Agency mortgage & asset-backed |  | 43,919 |  |  | (223) |  | 18 |  |  | 46,654 |  |  | (3,389) |  | 53 |  |  | 90,573 |  |  | (3,612) |  | 71
Total temporarily impaired | $ | 46,035 |  | $ | (240) |  | 30 |  | $ | 391,462 |  | $ | (49,747) |  | 520 |  | $ | 437,497 |  | $ | (49,987) |  | 550
| 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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