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 6 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2020
Dec. 31, 2019
Derivative [Line Items]      
Derivative financial instruments outstanding     $ 0
Fair value of derivatives in net liability position $ 1,200,000 $ 1,200,000  
Amount of collateral posted 1,100,000 1,100,000  
Net liability position 98,000,000 98,000,000  
Termination value 1,200,000 1,200,000  
Derivative fair value of assets 1,100 1,100  
Other Income      
Derivative [Line Items]      
Fee income 512,000,000 $ 512,000,000  
Not Designated as Hedging Instrument      
Derivative [Line Items]      
Amount of Gain or (Loss) Recognized in Income on Derivative $ (98,000)   $ 0