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Loans Receivable and Allowance for Loan Losses (Impaired Loans and Related Interest Income by Loan Portfolio Class) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Associated Allowance |  |  |  |  | $ 417
Average Recorded Investment, Total | $ 2,094 | $ 601 | $ 2,096 | $ 840 |
Interest Income Recognized, Total | 3 | 24 | 6 | 24 |
Impaired Loans [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 170 |  | 170 |  | 143
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,923 |  | 1,923 |  | 2,001
Impaired Financing Receivable, Recorded Investment | 2,093 |  | 2,093 |  | 2,144
Unpaid Principal Balance, With no related allowance recorded | 370 |  | 370 |  | 394
Unpaid Principal Balance, With an allowance recorded | 1,956 |  | 1,956 |  | 2,001
Unpaid Principal Balance, Total | 2,326 |  | 2,326 |  | 2,395
Associated Allowance | 392 |  | 392 |  | 417
Commercial [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Associated Allowance |  |  |  |  | 417
Average Recorded Investment, Total |  |  | 2,096 | 840 |
Interest Income Recognized, Total |  |  | 6 | $ 24 |
Commercial [Member] | Impaired Loans [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment |  |  |  |  | 2,001
Unpaid Principal Balance, With an allowance recorded |  |  |  |  | 2,001
Commercial Real Estate Loans [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Average Recorded Investment, Total | 2,094 | 601 |  |  |
Interest Income Recognized, Total | 3 | $ 24 |  |  |
Commercial Real Estate Loans [Member] | Impaired Loans [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 170 |  | 170 |  | 143
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 1,923 |  | 1,923 |  |
Impaired Financing Receivable, Recorded Investment | 2,093 |  | 2,093 |  | 2,144
Unpaid Principal Balance, With no related allowance recorded | 370 |  | 370 |  | 394
Unpaid Principal Balance, With an allowance recorded | 1,956 |  | 1,956 |  |
Unpaid Principal Balance, Total | 2,326 |  | 2,326 |  | 2,395
Associated Allowance | $ 392 |  | $ 392 |  | $ 417

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