Quarterly report pursuant to Section 13 or 15(d)

Derivatives and Hedging Activities - Additional Information (Details)

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Derivatives and Hedging Activities - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2020
Dec. 31, 2019
Derivative [Line Items]      
Derivative financial instruments outstanding     $ 0
Fair value of derivatives in net liability position $ 1,100,000 $ 1,100,000  
Amount of collateral posted 1,200,000 1,200,000  
Net liability position 77,000 77,000  
Derivative fair value of liabilities 1,100,000 1,100,000  
Derivative fair value of assets 1,000,000.0 1,000,000.0  
Termination value 1,100,000 1,100,000  
Other Income      
Derivative [Line Items]      
Fee income 0 $ 512,000  
Not Designated as Hedging Instrument      
Derivative [Line Items]      
Amount of Gain or (Loss) Recognized in Income on Derivative $ (77,000)   $ 0