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Other Derivatives - Cash flow hedges (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Net unrealized gain (loss) on derivatives $ 0 $ (2,049) $ (2,731)
Cash Flow Hedge | Interest Rate Product      
Net unrealized gain (loss) on derivatives 0 (1,510) (1,812)
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income (517) (1,146) 1,994
Cash Flow Hedge | Interest Rate Product | Interest Expense      
Net unrealized gain (loss) on derivatives 0 (1,510) (1,812)
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income (517) (1,146) 1,165
Cash Flow Hedge | Interest Rate Product | Gain on sale of investment securities      
Net unrealized gain (loss) on derivatives 0   0
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income $ 0 $ 0 $ 829