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Marketable Securities (Tables) | 6 Months Ended
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Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract] |
Schedule of Marketable Securities | The following is a summary of available-for-sale and held-to-maturity securities as of June 30, 2023 (in thousands):
| Amortized Cost |  | Gross Unrealized Gain |  | Gross Unrealized (Losses) |  | Estimated Fair Value
Available-for-sale securities: |  |  |  |  |  |  |
Tax-exempt municipal securities | $ | 14,835 |  |  | $ | 1 |  |  | $ | (365) |  |  | $ | 14,471 |
Corporate debt securities | 3,205 |  |  | — |  |  | (152) |  |  | 3,053 |
Total available-for sale securities | $ | 18,040 |  |  | $ | 1 |  |  | $ | (517) |  |  | $ | 17,524 |
Held-to-maturity securities: |  |  |  |  |  |  |
Term deposits | $ | 16,553 |  |  | $ | — |  |  | $ | — |  |  | $ | 16,553 |
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 June 30, 2023 (in thousands):
| December 31, 2022 |  | June 30, 2023
| Available-for-sale securities |  | Held-to-maturity securities |  | Available-for-sale securities |  | Held-to-maturity securities
Due within one year | $ | 9,156 |  |  | $ | — |  |  | $ | 8,915 |  |  | $ | 16,553 |
Due after one year through three years | 13,123 |  |  | — |  |  | 8,609 |  |  | — |
Total | $ | 22,279 |  |  | $ | — |  |  | $ | 17,524 |  |  | $ | 16,553 |
Schedule of Proceeds from the Maturities of Available-for-Sale Securities | The following table summarizes the proceeds from the maturities and sales of available-for-sale securities for the three and six months ended June 30, 2022 and 2023 (in thousands):
| For the three months ended June 30, |  | For the six months ended June 30,
| 2022 |  | 2023 |  | 2022 |  | 2023
Maturities of marketable securities | $ | 1,000 |  |  | $ | 3,000 |  |  | $ | 2,100 |  |  | $ | 4,960 |
Sales of marketable securities | — |  |  | — |  |  | — |  |  | — |
Total | $ | 1,000 |  |  | $ | 3,000 |  |  | $ | 2,100 |  |  | $ | 4,960 |

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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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