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Derivatives and Hedging Activities (Derivative Positions for Interest Rate Swaps which Qualify as Hedges) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes |  |  |
Amortization Of Deferred Hedge Gains Losses | $ 0 | $ 231,000 | $ 244,000
Notional amount of fair value hedged derivative | $ 0 | $ 0 | $ 0
Interest rate swaps on borrowings [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Average Remaining Maturity | 2 years 2 months 4 days | 3 years 2 months 4 days |
Derivative, Average Variable Interest Rate | 1.90% | 2.74% |
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes |  |  |
Fair Value | $ 140,000 | $ 2,282,000 |
Derivative, Notional Amount | $ 75,000,000 | $ 75,000,000 |
Derivative, Average Fixed Interest Rate | 1.53% | 1.53% |
Interest rate swaps on loans [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Average Remaining Maturity | 3 years 7 months 28 days | 4 years 6 months 7 days |
Derivative, Average Variable Interest Rate | 1.76% | 2.57% |
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes |  |  |
Fair Value | $ 12,907,000 | $ 2,938,000 |
Derivative, Notional Amount | $ 450,000,000 | $ 250,000,000 |
Derivative, Average Fixed Interest Rate | 2.37% | 2.67% |
Interest rate collars on loans [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Average Remaining Maturity | 3 years 7 months 28 days | 4 years 2 months 1 day |
Derivative, Average Variable Interest Rate | 1.76% | 2.47% |
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes |  |  |
Fair Value | $ 9,896,000 | $ 3,344,000 |
Derivative, Notional Amount | $ 400,000,000 | $ 250,000,000 |
Derivative, Cap Interest Rate | 2.73% | 3.02% |
Derivative, Floor Interest Rate | 2.20% | 2.51% |
Interest Rate Swap [Member] |  |  |
Details of derivative positions for interest rate swaps which qualify as hedges for accounting purposes |  |  |
Fair Value | $ 22,943,000 | $ 8,564,000 |
Derivative, Notional Amount | $ 925,000,000 | $ 575,000,000 |

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- Definition The amount of expense charged against earnings by an entity to record deferred gains and losses on hedge instruments. + References No definition available. + Details
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- Definition Aggregate notional amount specified by a fair value hedged derivative. + References No definition available. + Details
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- Definition Average cap rate on a group of interest rate derivatives, such as interest rate caps or collars. If market rates exceed the cap rate, a payment or receipt is triggered on the contract. + References No definition available. + Details
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- Definition Average floor rate on a group of interest rate derivatives, such as interest rate floor or collars. If market rates fall below the floor rate, a payment or receipt is triggered on the contract. + References No definition available. + Details
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- Definition Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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