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Investments | 12 Months Ended
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Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract] |
Investments |
4. | Investments:
Investments held are summarized as follows (in thousands):
|  | December 31, |
|  | 2020 |  |  | 2019 |
Corporate securities |  | $ | 71,095 |  |  | $ | 32,962 |
Municipal debt securities |  |  | 18,707 |  |  |  | 29,066 |
Federal home loan securities |  |  | 8,017 |  |  |  | 8,013 |
Certificates of deposit |  |  | 5,991 |  |  |  | 4,469 |
U.S. Treasury securities |  |  | 1,060 |  |  |  | — |
|  | $ | 104,870 |  |  | $ | 74,510 |

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