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Hedge Accounting (Narrative) (Details) - Designated as Hedging Instrument [Member] - USD ($)
6 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]    
Notional amount $ 8,000,000.0 $ 8,000,000.0
Derivative asset 0  
Derivative ineffective portion 0  
Derivative loss $ 0