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Securities (Tables) | 12 Months Ended
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Dec. 31, 2020
Securities [Abstract] |
Available-for-Sale Investment Securities Portfolios | The following table summarizes the amortized cost and fair value of the available‑for‑sale investment securities portfolios at December 31, 2020 and December 31, 2019 and the corresponding amounts of unrealized gains (losses) which are recognized in accumulated other comprehensive income:
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
|  | (In thousands) |
December 31, 2020: |  |  |  |  |  |  |  |  |  |  |  |
Federal agency mortgage‑backed securities |  | $ | 5,550 |  |  | $ | 257 |  |  | $ | - |  |  | $ | 5,807 |
Federal agency debt |  |  | 2,682 |  |  |  | 190 |  |  |  |  |  |  |  | 2,872 |
Municipal bonds |  |  | 2,000 |  |  |  | 19 |  |  |  | - |  |  |  | 2,019 |
Total available‑for‑sale securities |  | $ | 10,232 |  |  | $ | 466 |  |  | $ | - |  |  | $ | 10,698 |
December 31, 2019: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Federal agency mortgage‑backed securities |  | $ | 7,792 |  |  | $ | 164 |  |  | $ | - |  |  | $ | 7,956 |
Federal agency debt |  |  | 3,014 |  |  |  | 36 |  |  |  | - |  |  |  | 3,050 |
Total available‑for‑sale securities |  | $ | 10,806 |  |  | $ | 200 |  |  | $ | - |  |  | $ | 11,006 |

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 + Details
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