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MARKETABLE SECURITIES (Tables)
 9 Months Ended
Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract]  
Schedule of Amortized Cost, Gross Unrealized Gains and Losses, and Fair Market Value of AFS Securities
The following tables present the amortized cost, gross unrealized gains and losses, and fair market value of our AFS securities as of September 30, 2025, and December 31, 2024:
September 30, 2025
(In thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesFair Value
Short-term AFS securities
Corporate debt securities$191,583 $531 $(17)$192,097 
U.S. Treasury securities171,058 463 (5)171,516 
Certificates of deposit4,400 — — 4,400 
Total short-term AFS securities$367,041 $994 $(22)$368,013 
Long-term AFS securities
U.S. Treasury securities$279,007 $1,261 $(41)$280,227 
Corporate debt securities195,984 685 (46)196,623 
U.S. governmental agency securities2,582 — (3)2,579 
Total long-term AFS securities$477,573 $1,946 $(90)$479,429 
December 31, 2024
(In thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesFair Value
Short-term AFS securities
Corporate debt securities$153,988 $415 $(28)$154,375 
U.S. Treasury securities203,238 511 (20)203,729 
Certificates of deposit4,400 — — 4,400 
U.S. governmental agency securities3,974 — (4)3,970 
Total short-term AFS securities$365,600 $926 $(52)$366,474 
Long-term AFS securities
U.S. Treasury securities$154,936 $258 $(261)$154,933 
Corporate debt securities190,772 544 (303)191,013 
Total long-term AFS securities$345,708 $802 $(564)$345,946 
Schedule of Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value
The following tables represent the AFS securities as of September 30, 2025, and December 31, 2024, that were in an unrealized loss position for which an allowance for credit losses has not been recorded, aggregated by investment category and the length of time that individual securities have been in a continuous unrealized loss position:
September 30, 2025
Less than 12 Months12 Months or GreaterTotal
(In thousands)Fair ValueGross Unrealized LossesFair ValueGross Unrealized LossesFair ValueGross Unrealized Losses
Short-term AFS securities
Corporate debt securities$19,510 $(17)$998 $— $20,508 $(17)
U.S. Treasury securities2,017 — 7,017 (5)9,034 (5)
Total short-term AFS securities$21,527 $(17)$8,015 $(5)$29,542 $(22)
Long-term AFS securities
U.S. Treasury securities$32,480 $(30)$6,936 $(11)$39,416 $(41)
Corporate debt securities44,062 (46)— — 44,062 (46)
U.S. governmental agency securities2,579 (3)— — 2,579 (3)
Total long-term AFS securities$79,121 $(79)$6,936 $(11)$86,057 $(90)
December 31, 2024
Less than 12 Months12 Months or GreaterTotal
(In thousands)Fair ValueGross Unrealized LossesFair ValueGross Unrealized LossesFair ValueGross Unrealized Losses
Short-term AFS securities
Corporate debt securities$28,741 $(28)$249 $— $28,990 $(28)
U.S. Treasury securities13,023 (18)1,297 (2)14,320 (20)
U.S. governmental agency securities— — 3,971 (4)3,971 (4)
Total short-term AFS securities$41,764 $(46)$5,517 $(6)$47,281 $(52)
Long-term AFS securities
U.S. Treasury securities$64,325 $(261)$— $— $64,325 $(261)
Corporate debt securities68,163 (303)— — 68,163 (303)
Total long-term AFS securities$132,488 $(564)$— $— $132,488 $(564)