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Long-Term Borrowings - Components (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Long-term borrowings |  |
Finance lease liabilities |  | $ 10
Long-term borrowings | $ 200,000 | 200,010
Federal Reserve Bank line of credit |  |
Long-term borrowings |  |
Remaining borrowing capacity | 1,200,000 | 1,100,000
FHLB fixed-rate advances |  |
Long-term borrowings |  |
Long-term borrowings | 200,000 | 200,000
Remaining borrowing capacity | $ 1,700,000 | $ 2,000,000
Weighted average interest rate | 2.73% | 2.73%

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