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Investments in debt and equity securities
 6 Months Ended
Jun. 30, 2025
Investments, Debt and Equity Securities [Abstract]  
Investments in debt and equity securities Short-term and long-term investments
The Company’s short-term and long-term investments, consisting of debt instruments classified as held-to-maturity and equity investments with readily determinable fair values or redemption values, were as follows:
 June 30, 2025December 31, 2024
Debt
securities		Equity
securities		TotalDebt
securities		Equity
securities		Total
Certificates of deposit and other time deposits$31,783 $— $31,783 $44,158 $— $44,158 
Investments in mutual funds and common stocks— 37,953 37,953 — 40,566 40,566 
 $31,783 $37,953 $69,736 $44,158 $40,566 $84,724 
Short-term investments$28,114 $2,900 $31,014 $44,158 $6,906 $51,064 
Long-term investments3,669 35,053 38,722 — 33,660 33,660 
 $31,783 $37,953 $69,736 $44,158 $40,566 $84,724 
Debt securities. The Company's short-term debt investments are principally bank certificates of deposit and international sovereign bonds, each with contractual maturities longer than three months but shorter than one year. The Company's long-term debt investments are international sovereign bonds with contractual maturities longer than one year. These debt securities are accounted for as held-to-maturity and recorded at amortized cost, which approximated their fair values at June 30, 2025 and December 31, 2024.
Equity securities. Substantially all of the Company's short-term and long-term equity investments are held within a trust to fund existing obligations associated with the Company’s non-qualified deferred compensation plans.