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Fair Value Measurements
6 Months Ended
Jun. 30, 2023
Fair Value Disclosures [Abstract]  
Fair Value Measurements FAIR VALUE MEASUREMENTS
Investments
The following is a summary of our investments measured at fair value at June 30, 2023:
TotalLevel 1Level 2Level 3Unclassified
 (In thousands)
Equity securities
Mutual funds$7,294 $— $7,294 $— $— 
Available-for-sale securities
Corporate bonds1,706 1,706 — — — 
Total$9,000 $1,706 $7,294 $— $— 
The following is a summary of our investments measured at fair value at December 31, 2022:
TotalLevel 1Level 2Level 3Unclassified
 (In thousands)
Equity securities
Mutual funds$6,341 $— $6,341 $— $— 
Available-for-sale securities
U.S. Government and agency securities3,253 3,253 — — — 
Corporate bonds2,265 1,714 551 — — 
Asset-backed securities and collateralized mortgage obligations42 — 42 — — 
Total$11,901 $4,967 $6,934 $— $— 
We estimate the fair value of investments based on quoted market prices. For investments for which there are no quoted market prices, we derive fair values from available yield curves for investments of similar quality and terms.
Derivatives
Level 2 derivative assets and liabilities currently consist of FX forward contracts. Where applicable, the value of these derivative assets and liabilities is computed by discounting the projected future cash flow amounts to present value using market-based observable inputs, including FX forward and spot rates, interest rates and counterparty performance risk adjustments. At June 30, 2023 and December 31, 2022, we had FX forward contracts outstanding to purchase or sell foreign currencies, primarily Canadian dollars and Euros, with a total fair value of $(8.0) million and $1.2 million, respectively.
Derivative assets and liabilities are included in Accounts receivable – other and Accounts payable, respectively, on our condensed consolidated balance sheets.
Other Financial Instruments
We used the following methods and assumptions in estimating our fair value disclosures for our other financial instruments, as follows:
Cash and cash equivalents and restricted cash and cash equivalents. The carrying amounts that we have reported in the accompanying condensed consolidated balance sheets for Cash and cash equivalents and Restricted cash and cash equivalents approximate their fair values due to their highly liquid nature.
Long-term and short-term debt. We base the fair values of debt instruments, including our 4.125% senior notes due 2028 (the "Senior Notes due 2028") and our 4.125% senior notes due 2029 (the "Senior Notes due 2029"), on quoted market prices. Where quoted prices are not available, we base the fair values on the present value of future cash flows discounted at estimated borrowing rates for similar debt instruments or on estimated prices based on current yields for debt issues of similar quality and terms. At June 30, 2023 and December 31, 2022, the fair value of the Senior Notes due 2028 was $365.0 million and $358.0 million, respectively, and the fair value of the Senior Notes due 2029 was $359.3 million and $352.0 million, respectively. The fair value of our remaining debt instruments approximated their carrying values at June 30, 2023 and December 31, 2022.