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v3.23.1

Marketable Securities (Tables) | 3 Months Ended
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Mar. 31, 2023
Marketable Securities [Abstract] |
Schedule of Available For Sale and Equity Securities | Available For Sale and Equity Securities on the accompanying Consolidated Balance Sheets consist of:
| At March 31, 2023
| Cost Amount |  | Gross Unrealized Gains |  | Gross Unrealized (Losses) |  | Fair Value
Available-for-sale debt securities | $ | 123,288 |  |  | $ | — |  |  | $ | (10,353) |  |  | $ | 112,935 |
SEI-sponsored mutual funds | 6,216 |  |  | 89 |  |  | (34) |  |  | 6,271 |
Equities and other mutual funds | 5,057 |  |  | 6 |  |  | — |  |  | 5,063 |
| $ | 134,561 |  |  | $ | 95 |  |  | $ | (10,387) |  |  | $ | 124,269 |
| At December 31, 2022
| Cost Amount |  | Gross Unrealized Gains |  | Gross Unrealized (Losses) |  | Fair Value
Available-for-sale debt securities | $ | 129,372 |  |  | $ | — |  |  | $ | (12,071) |  |  | $ | 117,301 |
SEI-sponsored mutual funds | 6,207 |  |  | — |  |  | (176) |  |  | 6,031 |
Equities and other mutual funds | 5,026 |  |  | — |  |  | (157) |  |  | 4,869 |
| $ | 140,605 |  |  | $ | — |  |  | $ | (12,404) |  |  | $ | 128,201 |

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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 https://asc.fasb.org/topic&trid=2196928 + Details
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- References No definition available. + Details
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