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Derivatives and Balance Sheet Offsetting Balance Sheet Offsetting (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Balance Sheet Offsetting [Line Items]    
Repurchase agreements, amounts offset in balance sheet $ 0 $ 0
repurchase agreements, net amount presented in statement of financial position 64,437 61,094
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities (64,437) (61,094)
securities sold under agreements to repurchase, amount not offset 0 0
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement 64,437  
Interest Rate Contracts [Member]    
Balance Sheet Offsetting [Line Items]    
Derivative Assets, Gross Amounts Offset in the Balance Sheets 0 0
Derivative Asset 19,144 7,033
Derivative, Collateral, Obligation to Return Securities 0 0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral 19,144 7,033
Derivative Liability, Gross Amounts Offset in Balance Sheets 0 0
Derivative Liability 19,145 7,033
Derivative, Collateral, Right to Reclaim Securities (19,145) (3,235)
Derivative Liability, Fair Value, Amount Not Offset Against Collateral 0 3,798
Interest rate collar [Domain]    
Balance Sheet Offsetting [Line Items]    
Derivative Assets, Gross Amounts Offset in the Balance Sheets 0  
Derivative Asset 14,727  
Derivative, Collateral, Obligation to Return Cash (14,727)  
Derivative Asset, Fair Value, Amount Not Offset Against Collateral 0  
Other Assets [Member] | Interest rate collar [Domain] | Designated as Hedging Instrument [Member]    
Balance Sheet Offsetting [Line Items]    
Derivative Asset, Fair Value, Gross Asset 14,727 0
Other Liabilities [Member] | Interest rate collar [Domain] | Designated as Hedging Instrument [Member]    
Balance Sheet Offsetting [Line Items]    
Derivative Liability, Fair Value, Gross Liability 0 0
Available-for-sale Securities [Member]    
Balance Sheet Offsetting [Line Items]    
Assets Sold under Agreements to Repurchase, Term, Carrying Amounts 25,000  
Assets Sold under Agreements to Repurchase, Carrying Amount $ 64,437 $ 61,094