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Financial Instruments - Additional Information (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
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Debt Securities, Available-for-sale [Line Items] |  |
Par value of available-for-sale debt securities | $ 39,000 | $ 40,000
Funds held for clients | 147,345 | 159,186
Certified Deposits and Other Depository Assets |  |
Debt Securities, Available-for-sale [Line Items] |  |
Funds held for clients | $ 2,100 | $ 1,000

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