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v3.23.2

Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
Net of tax |  |  |  |  |
Balance | $ 2,329,012 | $ 2,285,149 | $ 2,269,005 | $ 2,656,912 | $ 2,656,912
Unrealized net losses related to the transfer of securities from available-for-sale to held-to-maturity |  |  |  |  | (372,400)
Other comprehensive income (loss) | (1,057) | (53,955) | 26,518 | (449,764) |
Balance | 2,359,738 | 2,252,611 | 2,359,738 | 2,252,611 | 2,269,005
Accumulated Other Comprehensive Income (Loss) |  |  |  |  |
Net of tax |  |  |  |  |
Balance | (611,679) | (517,502) | (639,254) | (121,693) | (121,693)
Other comprehensive income (loss) | (1,057) | (53,955) | 26,518 | (449,764) |
Balance | (612,736) | (571,457) | (612,736) | (571,457) | (639,254)
Pensions and Other Benefits |  |  |  |  |
Net of tax |  |  |  |  |
Balance | (5,431) | (24,390) | (5,431) | (24,390) | (24,390)
Balance | (5,431) | (24,390) | (5,431) | (24,390) | (5,431)
Investment securities |  |  |  |  |
Net of tax |  |  |  |  |
Other comprehensive income (loss) | (705) | (52,371) | 26,239 | (446,922) |
Available-for-sale Investment securities |  |  |  |  |
Net of tax |  |  |  |  |
Balance | (273,816) | (491,854) | (292,175) | (97,303) | (97,303)
Unrealized net losses related to the transfer of securities from available-for-sale to held-to-maturity |  | 338,816 |  | 338,816 |
Other comprehensive income (loss) | (10,284) | (66,983) | 8,075 | (461,534) |
Balance | (284,100) | (220,021) | (284,100) | (220,021) | (292,175)
Held-to-Maturity Investment Securities |  |  |  |  |
Net of tax |  |  |  |  |
Balance | (328,361) |  | (336,946) |  |
Unrealized net losses related to the transfer of securities from available-for-sale to held-to-maturity |  | (338,816) |  | (338,816) |
Other comprehensive income (loss) | 9,579 | 14,612 | 18,164 | 14,612 |
Balance | (318,782) | (324,204) | (318,782) | (324,204) | (336,946)
Cash Flow Derivative Hedges |  |  |  |  |
Net of tax |  |  |  |  |
Balance | (4,071) | (1,258) | (4,702) |  |
Other comprehensive income (loss) | (352) | (1,584) | 279 | (2,842) |
Balance | $ (4,423) | $ (2,842) | $ (4,423) | $ (2,842) | $ (4,702)

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