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Premises, Equipment and Leases (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Premises and Equipment [Abstract] |  |  |
Premises and equipment before accumulated depreciation | $ 184,361 | $ 180,197 |
Accumulated depreciation | 112,268 | 105,991 |
Total premises and equipment | 72,093 | 74,206 |
Operating lease ROU assets | $ 23,300 | $ 26,400 |
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Other Assets | Other Assets |
Net Lease Cost [Abstract] |  |  |
Operating lease cost | $ 7,176 | $ 7,382 |
Variable lease cost | 2,090 | 2,141 |
Short-term lease cost | 369 | 453 |
Sublease income | (466) | (502) |
Total premises and equipment | 9,169 | 9,474 |
Future Minimum Rental Commitments Related to Non-cancelable Operating Leases [Abstract] |  |  |
2022 | 6,543 |  |
2023 | 5,440 |  |
2024 | 4,696 |  |
2025 | 3,499 |  |
2026 | 2,609 |  |
Thereafter | 7,985 |  |
Total lease payments | 30,772 |  |
Less: interest | (3,171) |  |
Present value of lease liabilities | $ 27,601 | $ 32,800 |
Operating Lease, Liability, Statement of Financial Position [Extensible List] | Other Liabilities | Other Liabilities |
Additional Information Related to Operating Leases [Abstract] |  |  |
Weighted average remaining lease term, in years | 6 years 10 months 28 days | 7 years 2 months 15 days |
Weighted average discount rate | 2.97% | 3.02% |
Cash paid for amounts included in the measurement of lease liabilities [Abstract] |  |  |
Operating cash flows from operating leases | $ 7,373 | $ 7,934 |
ROU assets obtained in exchange for lease liabilities | 1,843 | 3,441 |
Rental expense | 7,200 | 8,000 | $ 8,000
Land, Buildings and Improvements [Member] |  |  |
Premises and Equipment [Abstract] |  |  |
Premises and equipment before accumulated depreciation | 125,320 | 125,002 |
Furniture and Equipment [Member] |  |  |
Premises and Equipment [Abstract] |  |  |
Premises and equipment before accumulated depreciation | $ 59,041 | $ 55,195 |
Furniture and Equipment [Member] | Minimum [Member] |  |  |
Premises and Equipment [Abstract] |  |  |
Property, plant and equipment, useful life | 3 years |  |
Furniture and Equipment [Member] | Maximum [Member] |  |  |
Premises and Equipment [Abstract] |  |  |
Property, plant and equipment, useful life | 10 years |  |
Building and Improvements [Member] | Minimum [Member] |  |  |
Premises and Equipment [Abstract] |  |  |
Property, plant and equipment, useful life | 5 years |  |
Building and Improvements [Member] | Maximum [Member] |  |  |
Premises and Equipment [Abstract] |  |  |
Property, plant and equipment, useful life | 20 years |  |

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