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Investment Securities and Certificates of Deposit (Tables) | 6 Months Ended
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Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract] |
Marketable Securities | The Company's Investment Securities and Certificates of Deposit as of June 30, 2023 and December 31, 2022 were as follows:
|  |  |  |  |  |  | June 30, 2023 |  |  |  |  |  |  |  | December 31, 2022
Debt Securities |  |  |  |  |  |  | $ | 328,991 |  |  |  |  |  |  |  |  | $ | 807,135 |
Equity Securities |  |  |  |  |  |  | 558 |  |  |  |  |  |  |  |  | 335 |
Debt Securities Carried by EGL |  |  |  |  |  |  | 424,574 |  |  |  |  |  |  |  |  | 365,638 |
Investment Funds |  |  |  |  |  |  | 153,618 |  |  |  |  |  |  |  |  | 136,718 |
Total Investment Securities, at fair value |  |  |  |  |  |  | $ | 907,741 |  |  |  |  |  |  |  |  | $ | 1,309,826 |
Certificates of Deposit, at contract value |  | 54,380 |  |  |  |  |  |  |  |  | 122,890 |
Total Investment Securities and Certificates of Deposit |  | $ | 962,121 |  |  |  |  |  |  |  |  | $ | 1,432,716 |
Investments Classified by Contractual Maturity Date | Scheduled maturities of the Company's available-for-sale debt securities as of June 30, 2023 and December 31, 2022 were as follows:
| June 30, 2023 |  | December 31, 2022
| Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Due within one year | $ | 328,021 |  |  | $ | 328,029 |  |  | $ | 800,710 |  |  | $ | 805,190 |
Due after one year through five years | 973 |  |  | 962 |  |  | 1,942 |  |  | 1,945 |
Total | $ | 328,994 |  |  | $ | 328,991 |  |  | $ | 802,652 |  |  | $ | 807,135 |

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- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
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