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Cash Equivalents and Investments (Tables) | 6 Months Ended
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Jun. 30, 2021
Investments, Debt and Equity Securities [Abstract] |
Schedule of Investments | Investments held at June 30, 2021 and December 31, 2020 are summarized as follows (in thousands):
|  | June 30, 2021 |  |  | December 31, 2020 |
Corporate securities |  | $ | 69,897 |  |  | $ | 71,095 |
Municipal debt securities |  |  | 15,897 |  |  |  | 18,707 |
Federal home loan securities |  |  | 4,967 |  |  |  | 8,017 |
Certificates of deposit |  |  | 4,717 |  |  |  | 5,991 |
U.S. Treasury securities |  |  | 5,285 |  |  |  | 1,060 |
|  | $ | 100,763 |  |  | $ | 104,870 |

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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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