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Investments | 12 Months Ended
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Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract] |
Investments |
3. | Investments:
Investments held are summarized as follows (in thousands):
|  | December 31, 2019 |  |  | December 31, 2018 |
|  | Short- Term |  |  | Long-Term |  |  | Short-Term |  |  | Long-Term |
Corporate securities |  | $ | 32,962 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Municipal debt securities |  |  | 29,066 |  |  |  | — |  |  |  | 18,473 |  |  |  | 30,841 |
Federal home loan securities |  |  | 8,013 |  |  |  | — |  |  |  | 2,000 |  |  |  | 34,393 |
Certificates of deposit |  |  | 4,469 |  |  |  | — |  |  |  | 1,450 |  |  |  | 4,465 |
|  | $ | 74,510 |  |  | $ | — |  |  | $ | 21,923 |  |  | $ | 69,699 |

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