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Debt Securities (Tables) | 12 Months Ended
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Dec. 31, 2020
Debt Securities [Abstract] |
Summary of Amortized Cost and Fair Value of Securities Available-for-Sale |
|  | Amortized |  | Gross |  | Gross |  |  |
|  | Cost |  | Unrealized |  | Unrealized |  | Fair
(In thousands) |  | Basis |  | Gains |  | Losses |  | Value
December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |
State and municipal |  | $ | 10,211 |  | $ | 683 |  | $ | — |  | $ | 10,894
Asset-backed securities |  |  | 4,432 |  |  | 278 |  |  | — |  |  | 4,710
Government mortgage-backed securities |  |  | 16,172 |  |  | 449 |  |  | 10 |  |  | 16,611
Total debt securities available-for-sale |  | $ | 30,815 |  | $ | 1,410 |  | $ | 10 |  | $ | 32,215
December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |
State and municipal |  | $ | 10,808 |  | $ | 398 |  | $ | — |  | $ | 11,206
Asset-backed securities |  |  | 5,433 |  |  | 71 |  |  | 4 |  |  | 5,500
Government mortgage-backed securities |  |  | 24,954 |  |  | 197 |  |  | 67 |  |  | 25,084
Total debt securities available-for-sale |  | $ | 41,195 |  | $ | 666 |  | $ | 71 |  | $ | 41,790
Schedule of Maturities of Debt Securities |
|  | Available-for-Sale
|  | Amortized |  | Fair
(In thousands) |  | Cost |  | Value
Due after one year through five years |  | $ | 919 |  | $ | 963
Due after five years through ten years |  |  | 912 |  |  | 917
Due after ten years |  |  | 8,380 |  |  | 9,014
Government mortgage-backed securities |  |  | 16,172 |  |  | 16,611
Asset-backed securities |  |  | 4,432 |  |  | 4,710
|  | $ | 30,815 |  | $ | 32,215
Schedule of Aggregate Fair Value and Unrealized Losses of Securities |
|  | Less than 12 Months |  | 12 Months or Longer |  | Total
|  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
(In thousands) |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Temporarily impaired securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Government mortgage-backed securities |  | $ | — |  | $ | — |  | $ | 817 |  | $ | 10 |  | $ | 817 |  | $ | 10
Total temporarily impaired debt securities |  | $ | — |  | $ | — |  | $ | 817 |  | $ | 10 |  | $ | 817 |  | $ | 10
December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Temporarily impaired securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset-backed securities |  | $ | 606 |  | $ | 4 |  | $ | — |  | $ | — |  | $ | 606 |  | $ | 4
Government mortgage-backed securities |  |  | 5,207 |  |  | 8 |  |  | 5,418 |  |  | 59 |  |  | 10,625 |  |  | 67
Total temporarily impaired debt securities |  | $ | 5,813 |  | $ | 12 |  | $ | 5,418 |  | $ | 59 |  | $ | 11,231 |  | $ | 71

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