XML 40 R128.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Borrowings and Related Interest (Schedule Of Underlying Assets Of Repurchase Agreements) (Details) - Financial Instruments Owned And Pledged As Collateral Type [Domain] - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Assets Sold Under Agreements To Repurchase [Line Items]    
Amortized Cost of Underlying Securities $ 204,225 $ 496,814
Balance of Borrowing 190,000 454,723
Approximate Fair Value of Underlying Securities $ 204,068 $ 487,181
Weighted Average Interest Rate of Security 2.98% 3.01%
FNMA and FHLMC Certificates [Member]    
Assets Sold Under Agreements To Repurchase [Line Items]    
Amortized Cost of Underlying Securities $ 204,225 $ 496,814
Balance of Borrowing 190,000 454,723
Approximate Fair Value of Underlying Securities $ 204,068 $ 487,181
Weighted Average Interest Rate of Security 2.98% 3.01%