Quarterly report pursuant to Section 13 or 15(d)

Underlying Assets of Federal Home Loan Bank Advances (Details)

v3.20.2
Underlying Assets of Federal Home Loan Bank Advances (Details) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Federal Home Loan Bank of Des Moines [Member]    
Schedule of Assets Underlying Federal Home Loan Bank Advances [Line Items]    
Federal Home Loan Bank stock $ 10.0 $ 12.5
Available-for-sale Securities [Member]    
Schedule of Assets Underlying Federal Home Loan Bank Advances [Line Items]    
Assets pledged as collateral for Federal Home Loan Bank advances   $ 226.5