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Investment Securities (Investments Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
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Schedule of Investments [Line Items] |  |
Available for sale Securities, Amortized Cost, Due after 1 year but within 5 years | $ 19,457 |
Available for sale Securities, Amortized Cost, Due after 5 years but within 10 years | 16,463 |
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Total | 35,920 |
Available-for-sale debt securities, Amortized Cost | 52,558 | $ 116,027
Available for sale Securities, Fair Value, Due after 1 year but within 5 years | 19,403 |
Available for sale Securities, Fair Value, Due after 5 years but within 10 years | 16,505 |
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Fair Value, Total | 35,908 |
Available for sale Securities, Fair Value | 52,419 | 111,923
Held-to-maturity, Due in 1 year or less, Amortized Cost | 3,990 |
Held-to-maturity, Due after 1 year through 5 years, Amortized Cost | 19,663 |
Held-to-maturity, Due after 5 years through 10 years, Amortized Cost | 79,347 |
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis | 103,000 |
Held-to-maturity debt securities, Amortized Cost | 170,472 | 168,370
Held-to-maturity, Due in 1 year or less, Fair Value | 3,992 |
Held-to-maturity, Due after 1 year through 5, Fair Value | 19,926 |
Held-to-maturity, Due after 5 years through 10 years, Fair Value | 81,930 |
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Fair Value | 105,848 |
Held-to-maturity, Fair Value | 173,722 | $ 166,582
Mortgage-backed securities [Member] |  |
Schedule of Investments [Line Items] |  |
Available for sale Securities without a Single Maturity Date, Amortized Cost | 16,638 |
Available for sale securities without a Single Maturity Date, Fair Value | 16,511 |
Held-to-maturity without Single Maturity Date, Amortized Cost | 67,472 |
Held-to-maturity without Single Maturity Date, Fair Value | $ 67,874 |

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