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Derivative Instruments (Derivative Liabilities Offset in the Consolidated Balance Sheet) (Details) - Not Designated as Hedging Instrument - Interest Rate Swap $ in Thousands | Dec. 31, 2018 USD ($)
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Customer Counterparties Loan Interest Rate Swap Liabilities |
Offsetting Liabilities [Line Items] |
Gross Amounts of Recognized Liabilities | $ 13,774
Derivative Liability | 13,774
Derivative Liability, Fair Value of Collateral | 13,774
Derivative Liability, Fair Value, Amount Not Offset Against Collateral | 13,774
Derivative Liability, Fair Value, Amount Offset Against Collateral | 0
Financial Institution Counterparties Loan Interest Rate Swap Liabilities |
Offsetting Liabilities [Line Items] |
Gross Amounts of Recognized Liabilities | 0
Derivative Liability | 0
Derivative Liability, Fair Value of Collateral | 0
Derivative Liability, Fair Value, Amount Not Offset Against Collateral | 0
Derivative Liability, Fair Value, Amount Offset Against Collateral | $ 0

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