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v3.20.4

Premises, Equipment and Leases (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Premises and Equipment [Abstract] |  |  |
Premises and equipment before accumulated depreciation | $ 180,197 | $ 179,910 |
Accumulated depreciation | 105,991 | 104,279 |
Total premises and equipment | 74,206 | 75,631 |
Operating lease ROU assets | $ 26,400 | $ 34,800 |
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | us-gaap:OtherAssets | us-gaap:OtherAssets |
Net Lease Cost [Abstract] |  |  |
Operating lease cost | $ 7,382 | $ 7,239 |
Variable lease cost | 2,141 | 2,231 |
Short-term lease cost | 453 | 356 |
Sublease income | (502) | (448) |
Total premises and equipment | 9,474 | 9,378 |
Future Minimum Rental Commitments Related to Non-cancelable Operating Leases [Abstract] |  |  |
2021 | 7,209 |  |
2022 | 6,339 |  |
2023 | 5,251 |  |
2024 | 4,581 |  |
2025 | 3,411 |  |
Thereafter | 10,023 |  |
Total lease payments | 36,814 |  |
Less: interest | (3,990) |  |
Present value of lease liabilities | $ 32,824 | $ 37,300 |
Operating Lease, Liability, Statement of Financial Position [Extensible List] | us-gaap:OtherLiabilities | us-gaap:OtherLiabilities |
Additional Information Related to Operating Leases [Abstract] |  |  |
Weighted average remaining lease term, in years | 7 years 2 months 15 days | 7 years 8 months 8 days |
Weighted average discount rate | 3.02% | 3.00% |
Cash paid for amounts included in the measurement of lease liabilities [Abstract] |  |  |
Operating cash flows from operating leases | $ 7,934 | $ 6,211 |
ROU assets obtained in exchange for lease liabilities | 3,441 | 41,008 |
Rental expense | 8,000 | 8,000 | $ 8,600
Land, Buildings and Improvements [Member] |  |  |
Premises and Equipment [Abstract] |  |  |
Premises and equipment before accumulated depreciation | 125,002 | 121,479 |
Equipment [Member] |  |  |
Premises and Equipment [Abstract] |  |  |
Premises and equipment before accumulated depreciation | $ 55,195 | $ 58,431 |
Equipment [Member] | Minimum [Member] |  |  |
Premises and Equipment [Abstract] |  |  |
Property, plant and equipment, useful life | 3 years |  |
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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