Derivatives and balance Sheet Offsetting - Collateral pledged table (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Balance Sheet Offsetting [Line Items]
Repurchase agreements, amounts offset in balance sheet	$ 0	$ 0
repurchase agreements, net amount presented in statement of financial position	86,013	73,859
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities	(86,013)	(73,859)
securities sold under agreements to repurchase, amount not offset	0	0
Interest Rate Contracts
Balance Sheet Offsetting [Line Items]
Derivative Assets, Gross Amounts Offset in the Balance Sheets	0	0
Derivative Assets	24,257	46,184
Derivative, Collateral, Obligation to Return Securities	(450)	0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	23,807	46,184
Derivative Liability, Gross Amounts Offset in Balance Sheets	0	0
Derivative Liabilities	24,257	46,637
Derivative, Collateral, Right to Reclaim Securities	(20,747)	(46,637)
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	3,510	0
Not Designated as Hedging Instrument | Interest Rate Contracts | Other Assets
Balance Sheet Offsetting [Line Items]
Derivative Asset, Fair Value, Gross Asset	24,257	46,184
Not Designated as Hedging Instrument | Interest Rate Contracts | Other Liabilities
Balance Sheet Offsetting [Line Items]
Derivative Liability, Fair Value, Gross Liability	24,257	46,637
Available-for-sale Securities
Balance Sheet Offsetting [Line Items]
Assets Sold under Agreements to Repurchase, Carrying Amount	$ 86,013	$ 73,859