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Derivative Instruments and Hedging Activities (Narrative) (Details) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2021 USD ($) InterestRateDerivative | Dec. 31, 2020 USD ($)
Derivative [Line Items] |  |
Estimated reclassification to interest expense during next twelve months | $ 64,000 |
Derivatives Designated as Hedging Instruments [Member] |  |
Derivative [Line Items] |  |
Notional amount | $ 50,000,000 | $ 50,000,000
Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedge of Interest Rate Risk [Member] |  |
Derivative [Line Items] |  |
Number of months hedging exposure to variability in future cash flows for forecasted transactions | 60 months |
Number of outstanding forward starting interest rate Derivative | InterestRateDerivative | 1 |
Notional amount | $ 50,000,000.0 |
Derivative effective date | 2022-04 |

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