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Troubled Debt Restructurings Schedule Of Troubled Debt Restructurings On Financing Receivables (Details)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2019
contract
Jun. 30, 2018
USD ($)
contract
Jun. 30, 2019
USD ($)
contract
Jun. 30, 2018
USD ($)
contract
Dec. 31, 2018
contract
Troubled Debt Restructuring, Subsequent Periods [Line Items]          
Troubled Debt Restructuring Modifications Number Of Contracts | contract   1   1  
Financing Receivable, Troubled Debt Restructuring, Premodification   $ 86   $ 86  
Financing Receivable, Troubled Debt Restructuring, Postmodification   $ 86   $ 86  
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract 0   1    
Financing Receivable, Modifications, Number of Contracts | contract     19   19
Residential Single Family          
Troubled Debt Restructuring, Subsequent Periods [Line Items]          
Troubled Debt Restructuring Modifications Number Of Contracts | contract   1   1  
Financing Receivable, Troubled Debt Restructuring, Premodification   $ 86   $ 86  
Financing Receivable, Troubled Debt Restructuring, Postmodification   $ 86   $ 86  
Troubled Debt Restructurings Within Previous Twelve Months [Member]          
Troubled Debt Restructuring, Subsequent Periods [Line Items]          
Troubled Debt Restructuring Modifications Recorded Investment     $ 76    
Troubled Debt Restructurings Within Previous Twelve Months [Member] | Residential Single Family          
Troubled Debt Restructuring, Subsequent Periods [Line Items]          
Financing Receivable, Modifications, Number of Contracts | contract     1    
Troubled Debt Restructuring Modifications Recorded Investment     $ 76