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Investments (Tables) | 12 Months Ended
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Dec. 31, 2023
Investments [Abstract] |
Unrealized Gain (Loss) On Investments |
(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
(Dollars in thousands) |  |  |  |  | Gross |  | Gross |  |  |
|  | Amortized |  | unrealized |  | unrealized |  | Fair
December 31, 2022 |  | cost |  | gains |  | losses |  | value
U.S. Treasury |  | $ | 101,980 |  | $ | — |  | $ | (11,723) |  | $ | 90,257
Municipal |  |  | 186,007 |  |  | 14 |  |  | (30,566) |  |  | 155,455
Corporate |  |  | 26,316 |  |  | — |  |  | (2,077) |  |  | 24,239
Agency mortgage & asset-backed |  |  | 163,274 |  |  | 19 |  |  | (12,358) |  |  | 150,935
Non-Agency mortgage & asset-backed |  |  | 70,756 |  |  | 1 |  |  | (4,807) |  |  | 65,950
Total |  | $ | 548,333 |  | $ | 34 |  | $ | (61,531) |  | $ | 486,836
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 |  |  |  |  |  | 61,341 |  |  | 55,072
Due after five years through ten years |  |  |  |  |  | 101,953 |  |  | 88,740
Due after ten years |  |  |  |  |  | 107,875 |  |  | 92,095
|  |  |  |  |  | 271,169 |  |  | 235,907
Mortgage-backed and asset-backed |  |  |  |  |  | 250,750 |  |  | 236,596
Total |  |  |  |  | $ | 521,919 |  | $ | 472,503
Composition Of Net Realized Securities Gains (Losses) |
(Dollars in thousands) |  | 2023 |  | 2022
Proceeds |  | $ | 40,113 |  | $ | 19,629
Gross gains realized |  |  | 12 |  |  | 61
Gross losses realized |  |  | (1,131) |  |  | (152)
Net (losses)/gains realized |  | $ | (1,119) |  | $ | (91)
Tax provision on net (losses)/gains realized |  | $ | 235 |  | $ | 19
Schedule Of Unrealized Loss On Investments |
| 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
| December 31, 2022
| 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 | $ | 17,598 |  | $ | (183) |  | 3 |  | $ | 72,659 |  | $ | (11,540) |  | 28 |  | $ | 90,257 |  | $ | (11,723) |  | 31
Municipal |  | 73,644 |  |  | (9,586) |  | 90 |  |  | 80,503 |  |  | (20,981) |  | 104 |  |  | 154,147 |  |  | (30,566) |  | 194
Corporate |  | 12,221 |  |  | (851) |  | 25 |  |  | 10,368 |  |  | (1,226) |  | 21 |  |  | 22,589 |  |  | (2,077) |  | 46
Agency mortgage & asset-backed |  | 55,393 |  |  | (2,747) |  | 139 |  |  | 88,953 |  |  | (9,611) |  | 113 |  |  | 144,346 |  |  | (12,358) |  | 252
Non-Agency mortgage & asset-backed |  | 49,301 |  |  | (3,092) |  | 52 |  |  | 14,207 |  |  | (1,715) |  | 16 |  |  | 63,508 |  |  | (4,807) |  | 68
Total temporarily impaired | $ | 208,157 |  | $ | (16,459) |  | 309 |  | $ | 266,690 |  | $ | (45,072) |  | 282 |  | $ | 474,847 |  | $ | (61,531) |  | 591

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