XML 37 R25.htm IDEA: XBRL DOCUMENT v3.25.3
Fair Value of Financial Instruments (Tables)
 9 Months Ended
Sep. 30, 2025
Fair Value Disclosures [Abstract]  
Schedule of Fair Value Measurements of Financial Instruments
The following tables present the level within the fair value hierarchy at which our financial instruments were measured:
Fair Value Measurements Using
Quoted Prices in
Active Markets for
Identical Assets
(Level 1)		Significant Other
Observable Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)		Fair Value
As of September 30, 2025(In Thousands)
U.S. Treasury securities and obligations of U.S. government agencies$103,495 $— $— $103,495 
Municipal debt securities— 630,364 — 630,364 
Corporate debt securities— 2,113,879 — 2,113,879 
Asset-backed securities— 49,763 — 49,763 
Cash, cash equivalents and short-term investments248,498 — — 248,498 
Total assets$351,993 $2,794,006 $— $3,145,999 
Fair Value Measurements Using
Quoted Prices in
Active Markets for
Identical Assets
(Level 1)		Significant Other
Observable Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)		Fair Value
As of December 31, 2024(In Thousands)
U.S. Treasury securities and obligations of U.S. government agencies$116,060 $— $— $116,060 
Municipal debt securities— 635,245 — 635,245 
Corporate debt securities— 1,847,640 — 1,847,640 
Asset-backed securities— 41,980 — 41,980 
Cash, cash equivalents and short-term investments136,924 — — 136,924 
Total assets$252,984 $2,524,865 $— $2,777,849