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Federal Home Loan Bank and Federal Reserve Bank Stock - Summary of FHLB and FRB Stocks (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Federal Home Loan Banks [Abstract]    
FHLB stock, at cost $ 360,473 $ 318,473
FRB stock, at cost 123,988 123,967
Total investments $ 484,461 $ 442,440