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Premises and Equipment and Leases Premises and Equipment and Leases (Tables) | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Premises and Equipment [Table Text Block] | Premises and equipment at December 31 are summarized as follows (in thousands):
|  | December 31,
|  | 2023 |  | 2022
Land |  | $ | 69,121 |  |  | $ | 69,944 |
Buildings and improvements |  | 525,941 |  |  | 469,001 |
Software and related integration |  | 219,646 |  |  | 198,057 |
Furniture and equipment |  | 211,082 |  |  | 201,830 |
Construction in progress |  | 68,412 |  |  | 35,736 |
Premises and equipment |  | 1,094,202 |  |  | 974,568 |
Less: Accumulated depreciation |  | 471,979 |  |  | 409,393 |
Premises and equipment, net of accumulated depreciation |  | $ | 622,223 |  |  | $ | 565,175 |
Lessee, Operating Lease, Liability, Maturity [Table Text Block] | At December 31, 2023, undiscounted operating lease liabilities are scheduled to mature as follows (in thousands):
2024 |  | $ | 34,000 |
2025 |  | 33,351 |
2026 |  | 32,844 |
2027 |  | 30,416 |
2028 |  | 28,930 |
Thereafter |  | 182,273 |
Total undiscounted lease payments |  | 341,814 |
Less: Interest |  | 85,512 |
Lease liabilities |  | $ | 256,302 |

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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-6 + Details
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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
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