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Other Borrowings - Lines of Credit (Details) - USD ($) $ in Thousands | Nov. 15, 2019 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Principal maturities of other borrowings |  |  |
2020 |  | $ 700,007 |
2021 |  | 8 |
2022 |  | 8 |
2023 |  | 8 |
2024 |  | 8 |
Thereafter |  | 115,897 |
Total borrowings |  | 815,936 | $ 266,084
Unsecured line of credit |  |  |
Other Borrowings |  |  |
Maximum borrowing capacity | $ 25,000 | 0 | $ 0
Junior Subordinated Debt |  |  |
Principal maturities of other borrowings |  |  |
Thereafter |  | 115,833 |
Total borrowings |  | 115,833 |
FHLB Advances |  |  |
Principal maturities of other borrowings |  |  |
2020 |  | 700,000 |
Total borrowings |  | 700,000 |
Other |  |  |
Principal maturities of other borrowings |  |  |
2020 |  | 7 |
2021 |  | 8 |
2022 |  | 8 |
2023 |  | 8 |
2024 |  | 8 |
Thereafter |  | 64 |
Total borrowings |  | $ 103 |
LIBOR | Unsecured line of credit |  |  |
Other Borrowings |  |  |
Spread on variable rate basis (as a percent) | 1.35% |  |

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