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Shareholders' Equity Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Beginning Balance | $ 27,411 |  |
Amortization of net unrealized gains (losses) on AFS securities transferred to HTM | (44,483) | $ 2,690 | $ 3,448
Ending Balance | (385,476) | 27,411 |
Unrealized Gains (Losses) on Investment Securities |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Beginning Balance | 40,441 | 81,604 | 14,864
Other comprehensive income (loss) before reclassifications | (312,169) | (17,948) | 65,651
Amounts reclassified from AOCI gain (loss) | (20) | (25,905) | (2,359)
Amortization of net unrealized gains (losses) on AFS securities transferred to HTM | (44,483) | 2,690 | 3,448
Ending Balance | (316,231) | 40,441 | 81,604
Net Unrealized (Loss) Gain on Interest Rate Derivatives used in Cash Flow Hedges |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Beginning Balance | (4,817) | 0 | 0
Other comprehensive income (loss) before reclassifications | (62,963) | 0 | 0
Amounts reclassified from AOCI gain (loss) | 6,004 | (4,817) | 0
Amortization of net unrealized gains (losses) on AFS securities transferred to HTM | 0 | 0 | 0
Ending Balance | (61,776) | (4,817) | 0
Unrecognized Pension and Postretirement Plan Income (Costs) |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Beginning Balance | (8,213) | (16,513) | (15,001)
Other comprehensive income (loss) before reclassifications | 644 | 7,144 | (2,532)
Amounts reclassified from AOCI gain (loss) | 100 | 1,156 | 1,020
Amortization of net unrealized gains (losses) on AFS securities transferred to HTM | 0 | 0 | 0
Ending Balance | (7,469) | (8,213) | (16,513)
Accumulated Other Comprehensive (Loss) Income |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |  |
Beginning Balance | 27,411 | 65,091 | (137)
Other comprehensive income (loss) before reclassifications | (374,488) | (10,804) | 63,119
Amounts reclassified from AOCI gain (loss) | 6,084 | (29,566) | (1,339)
Amortization of net unrealized gains (losses) on AFS securities transferred to HTM | (44,483) | 2,690 | 3,448
Ending Balance | $ (385,476) | $ 27,411 | $ 65,091

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- Definition Other Comprehensive Income (Loss), Transfers From Available-For-Sale To Held-To-Maturity Securities, Net Of Tax + References No definition available. + Details
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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)(a)(4)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(23)(a)(3)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669686-108580 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 65 -Paragraph 2 -Subparagraph (h)(2) -URI https://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 65 -Paragraph 2 -Subparagraph (g)(2)(ii) -URI https://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI https://asc.fasb.org/extlink&oid=126968391&loc=d3e681-108580 + Details
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