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Fair Value Measurements - Fair Value Of Assets (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value Measurements [Line Items] |  |
Equity securities | $ 109,861 | $ 116,374
Fair value, Measurements, Recurring |  |
Fair Value Measurements [Line Items] |  |
Equity securities | 109,861 | 116,374
Total | 154,927 | 157,951
Fair value, Measurements, Recurring | Mutual Funds | Investments, Employee Benefit Plans, At Fair Value |  |
Fair Value Measurements [Line Items] |  |
Mutual funds and money market funds, fair value | 40,413 | 36,810
Fair value, Measurements, Recurring | Money Market Funds | Investments, Employee Benefit Plans, At Fair Value |  |
Fair Value Measurements [Line Items] |  |
Mutual funds and money market funds, fair value | 4,653 | 4,767
Fair value, Measurements, Recurring | Level 1 |  |
Fair Value Measurements [Line Items] |  |
Equity securities | 109,861 | 116,374
Total | 150,274 | 153,184
Fair value, Measurements, Recurring | Level 1 | Mutual Funds | Investments, Employee Benefit Plans, At Fair Value |  |
Fair Value Measurements [Line Items] |  |
Mutual funds and money market funds, fair value | 40,413 | 36,810
Fair value, Measurements, Recurring | Level 1 | Money Market Funds | Investments, Employee Benefit Plans, At Fair Value |  |
Fair Value Measurements [Line Items] |  |
Mutual funds and money market funds, fair value | 0 | 0
Fair value, Measurements, Recurring | Level 2 |  |
Fair Value Measurements [Line Items] |  |
Equity securities | 0 | 0
Total | 4,653 | 4,767
Fair value, Measurements, Recurring | Level 2 | Mutual Funds | Investments, Employee Benefit Plans, At Fair Value |  |
Fair Value Measurements [Line Items] |  |
Mutual funds and money market funds, fair value | 0 | 0
Fair value, Measurements, Recurring | Level 2 | Money Market Funds | Investments, Employee Benefit Plans, At Fair Value |  |
Fair Value Measurements [Line Items] |  |
Mutual funds and money market funds, fair value | 4,653 | 4,767
Fair value, Measurements, Recurring | Level 3 |  |
Fair Value Measurements [Line Items] |  |
Equity securities | 0 | 0
Total | 0 | 0
Fair value, Measurements, Recurring | Level 3 | Mutual Funds | Investments, Employee Benefit Plans, At Fair Value |  |
Fair Value Measurements [Line Items] |  |
Mutual funds and money market funds, fair value | 0 | 0
Fair value, Measurements, Recurring | Level 3 | Money Market Funds | Investments, Employee Benefit Plans, At Fair Value |  |
Fair Value Measurements [Line Items] |  |
Mutual funds and money market funds, fair value | $ 0 | $ 0

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