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Securities Held-to-Maturity | 12 Months Ended
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Dec. 31, 2020
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Securities Held-to-Maturity | 7. Securities Held-to-Maturity The following table is a summary of the Company’s securities held-to-maturity:
|  | December 31, 2020 |  |  | December 31, 2019 |
Debt instruments: Pass-through GSEs (amortized cost) |  | $ | 451 |  |  | $ | 16,863 |
During the years ended December 31, 2020 and 2019, the Company received proceeds of $16,488 and $3,244, respectively, from held-to-maturity securities maturing or being called prior to maturity. The following table summarizes unrealized gains, losses, and fair value (classified as Level 2 within the fair value hierarchy) of securities held-to-maturity:
|  | December 31, |
|  | 2020 |  |  | 2019 |
Cost/amortized cost |  | $ | 451 |  |  | $ | 16,863 |
Gross unrealized gains |  |  | 30 |  |  |  | 38 |
Gross unrealized losses |  |  | (12 | ) |  |  | (297 | )
Fair value |  | $ | 469 |  |  | $ | 16,604 |
An allowance for credit losses was not provided on the Company’s held-to-maturity securities as all securities are investments in pass-through GSEs which are determined to have an estimated loss rate of zero due to an implicit U.S. government guarantee. In addition, no securities were determined to be other-than-temporarily impaired at December 31, 2019. The following table sets forth the maturity profile of the securities held-to-maturity; however, these securities may be called prior to maturity date:
|  | December 31, |
|  | 2020 |  |  | 2019 |
Due within one year |  | $ | — |  |  | $ | — |
Due one year through five years |  |  | — |  |  |  | 2,000 |
Due five years through ten years |  |  | — |  |  |  | 7,494 |
Due over ten years |  |  | 451 |  |  |  | 7,369 |
Total |  | $ | 451 |  |  | $ | 16,863 |

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