Borrowings - Line of Credit and other disclosures (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Long-term borrowings
Available sources of credit for future borrowings	$ 550,110
FHLB
Long-term borrowings
Available sources of credit for future borrowings	200,880
FRB
Long-term borrowings
Available sources of credit for future borrowings	219,240
Federal Funds Agreements
Long-term borrowings
Available sources of credit for future borrowings	94,980
Repurchase Lines of Credit
Long-term borrowings
Available sources of credit for future borrowings	$ 35,000