Investment Securities - Amortized cost and fair value of debt securities (Details) - USD ($) $ in Thousands |
Sep. 30, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Available for Sale Amortized Cost | ||
| Due in one year or less, Amortized Cost | $ 0 | |
| Due after one year through five years, Amortized Cost | 4,185 | |
| Due after five years through ten years, Amortized Cost | 6,961 | |
| Due after ten years, Amortized Cost | 41,861 | |
| Available for Sale, Amortized Cost | 53,007 | |
| Amortized Cost | 76,325 | $ 56,713 |
| Available for Sale Fair Value | ||
| Due in one year or less, Fair Value | 0 | |
| Due after one year through five years, Fair Value | 4,341 | |
| Due after five years through ten years, Fair Value | 7,595 | |
| Due after ten years, Fair Value | 44,144 | |
| Available for Sale, Fair Value | 56,080 | |
| Fair Value | 79,712 | 58,417 |
| Mortgage-backed securities | ||
| Available for Sale Amortized Cost | ||
| Amortized Cost | 23,318 | 20,323 |
| Available for Sale Fair Value | ||
| Fair Value | $ 23,632 | $ 20,482 |