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v3.23.3

Comprehensive Income (Components of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Beginning Balance, December 31, 2022 |  |  |  | $ (498,042) |
Net current period OCI |  | $ (100,147) | $ (188,641) | (77,827) | $ (640,110)
Ending Balance, September 30, 2023 |  | (575,869) |  | (575,869) |
Available-for-sale Securities [Member] |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Beginning Balance, December 31, 2022 |  |  |  | (295,197) |
OCI before reclassifications |  |  |  | (76,219) |
Amounts reclassified from AOCI |  |  |  | 15,891 |
Net current period OCI |  |  |  | (60,328) |
Ending Balance, September 30, 2023 |  | (355,525) |  | (355,525) |
Investments [Member] |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Beginning Balance, December 31, 2022 |  |  |  | (417,035) |
OCI before reclassifications |  |  |  | (89,251) |
Amounts reclassified from AOCI |  |  |  | 9,630 |
Net current period OCI |  |  |  | (79,621) |
Ending Balance, September 30, 2023 |  | (496,656) |  | (496,656) |
Accumulated Net Unrealized Investment Gain (Loss) [Member] |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Beginning Balance, December 31, 2022 | [1] |  |  | (121,838) |
OCI before reclassifications | [1] |  |  | (13,032) |
Amounts reclassified from AOCI | [1] |  |  | (6,261) |
Net current period OCI | [1] |  |  | (19,293) |
Ending Balance, September 30, 2023 | [1] | (141,131) |  | (141,131) |
Accumulated Defined Benefit Plans Adjustment [Member] |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Beginning Balance, December 31, 2022 |  |  |  | (81,007) |
OCI before reclassifications |  |  |  | 0 |
Amounts reclassified from AOCI |  |  |  | 1,794 |
Net current period OCI |  |  |  | 1,794 |
Ending Balance, September 30, 2023 |  | (79,213) |  | (79,213) |
Accumulated other comprehensive income (loss) [Member] |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Beginning Balance, December 31, 2022 |  |  |  | (498,042) |
OCI before reclassifications |  |  |  | (89,251) |
Amounts reclassified from AOCI |  |  |  | 11,424 |
Net current period OCI |  | (100,147) | $ (188,641) | (77,827) | $ (640,110)
Ending Balance, September 30, 2023 |  | $ (575,869) |  | $ (575,869) |
[1] | 1 Represents change in unrealized gains (losses) on securities with credit loss recognized in earnings.

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