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Marketable Securities (Tables) | 12 Months Ended
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Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract] |
Schedule of Available-for-sale and Held-to-maturity Securities | The following is a summary of available-for-sale and held-to-maturity securities as of December 31, 2023 (in thousands):
| Amortized Cost |  | Gross Unrealized Gain |  | Gross Unrealized (Losses) |  | Estimated Fair Value
Available-for-sale securities: |  |  |  |  |  |  |
Tax-exempt municipal securities | $ | 10,055 |  |  | $ | 2 |  |  | $ | (144) |  |  | $ | 9,913 |
Corporate debt securities | 3,202 |  |  | — |  |  | (79) |  |  | 3,123 |
Total available-for-sale securities | $ | 13,257 |  |  | $ | 2 |  |  | $ | (223) |  |  | $ | 13,036 |
Held-to-maturity securities: |  |  |  |  |  |  |
Term deposits | $ | 27,175 |  |  | $ | — |  |  | $ | — |  |  | $ | 27,175 |
The following is a summary of available-for-sale securities as of December 31, 2022 (in thousands):
| Amortized Cost |  | Gross Unrealized Gain |  | Gross Unrealized (Losses) |  | Estimated Fair Value
Available-for-sale securities: |  |  |  |  |  |  |
Tax-exempt municipal securities | $ | 15,852 |  |  | $ | 2 |  |  | $ | (507) |  |  | $ | 15,347 |
Corporate debt securities | 7,140 |  |  | — |  |  | (208) |  |  | 6,932 |
Total | $ | 22,992 |  |  | $ | 2 |  |  | $ | (715) |  |  | $ | 22,279 |
Schedule of Maturities of Marketable Securities | The following table summarizes the maturities of the Company’s marketable securities as of December 31, 2022 and 2023 (in thousands):
| December 31, 2022 |  | December 31, 2023
| Available-for-sale securities |  | Held-to-maturity securities |  | Available-for-sale securities |  | Held-to-maturity securities
Due within one year | $ | 9,156 |  |  | $ | — |  |  | $ | 12,553 |  |  | $ | 27,175 |
Due after one year through three years | 13,123 |  |  | — |  |  | 483 |  |  | — |
Total | $ | 22,279 |  |  | $ | — |  |  | $ | 13,036 |  |  | $ | 27,175 |
Schedule of Proceeds from the Maturities of Marketable Securities | The following table summarizes the proceeds from the maturities and sales of available-for-sale securities for the years ended December 31, 2021, 2022, and 2023 (in thousands):
| December 31, 2021 |  | December 31, 2022 |  | December 31, 2023
Maturities of marketable securities | $ | 7,495 |  |  | $ | 6,420 |  |  | $ | 9,800 |
Sales of marketable securities | 1,805 |  |  | — |  |  | — |
Total | $ | 9,300 |  |  | $ | 6,420 |  |  | $ | 9,800 |

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- Definition Tabular disclosure of the proceeds from sales of available-for-sale securities and the gross realized gains and gross realized losses that have been included in earnings as a result of those sales. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-9 + Details
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