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Goodwill and Other Intangible Assets - Estimated Amortization Expense (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Estimated Amortization Expense |  |
2021 | $ 2,996 |
2022 | 2,635 |
2023 | 2,405 |
2024 | 2,187 |
2025 | 1,813 |
Thereafter | 4,628 |
Total | 16,664 | $ 20,415
Core deposit |  |
Estimated Amortization Expense |  |
Total | 15,870 | 19,177
Below market-value lease |  |
Estimated Amortization Expense |  |
Total | 65 | 319
Customer relationship and brokered relationship |  |
Estimated Amortization Expense |  |
Total | 729 | $ 919
United American Bank | Core deposit |  |
Estimated Amortization Expense |  |
2021 | 602 |
2022 | 553 |
2023 | 521 |
2024 | 499 |
2025 | 478 |
Thereafter | 1,042 |
Total | 3,695 |
Tri Valley Bank | Core deposit |  |
Estimated Amortization Expense |  |
2021 | 184 |
2022 | 167 |
2023 | 158 |
2024 | 152 |
2025 | 145 |
Thereafter | 306 |
Total | 1,112 |
Tri Valley Bank | Below or Above market-value lease |  |
Estimated Amortization Expense |  |
2021 | 18 |
2022 | 18 |
2023 | 18 |
2024 | 18 |
2025 | 18 |
Thereafter | 69 |
Total | 159 |
Presidio bank | Core deposit |  |
Estimated Amortization Expense |  |
2021 | 1,447 |
2022 | 1,225 |
2023 | 1,118 |
2024 | 1,026 |
2025 | 970 |
Thereafter | 3,211 |
Total | 8,997 |
Presidio bank | Below or Above market-value lease |  |
Estimated Amortization Expense |  |
2021 | (20) |
2022 | (20) |
2023 | (20) |
2024 | (13) |
Total | (73) |
Focus | Core deposit |  |
Estimated Amortization Expense |  |
2021 | 596 |
2022 | 502 |
2023 | 420 |
2024 | 346 |
2025 | 202 |
Total | 2,066 |
BVF/CSNK | Customer relationship and brokered relationship |  |
Estimated Amortization Expense |  |
2021 | 190 |
2022 | 190 |
2023 | 190 |
2024 | 159 |
Total | $ 729 |

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