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Available-for-Sale Marketable Securities in Unrealized Position (Detail) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 Months, Fair Value $ 11,514 $ 22,872
Less than 12 Months, Unrealized Loss (5) (74)
12 Months or Greater, Fair Value 2,516 9,597
12 Months or Greater, Unrealized Loss (208) (334)
Total, Fair Value 14,030 32,469
Total, Unrealized Loss (213) (408)
Corporate debt securities    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 Months, Fair Value 7,527 14,002
Less than 12 Months, Unrealized Loss (2) (27)
12 Months or Greater, Fair Value 0 3,967
12 Months or Greater, Unrealized Loss 0 (12)
Total, Fair Value 7,527 17,969
Total, Unrealized Loss (2) (39)
United States government agency securities    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 Months, Fair Value 3,774 8,468
Less than 12 Months, Unrealized Loss (1) (37)
12 Months or Greater, Fair Value 261 3,279
12 Months or Greater, Unrealized Loss 0 (15)
Total, Fair Value 4,035 11,747
Total, Unrealized Loss (1) (52)
Mortgage-backed securities    
Schedule of Available-for-sale Securities [Line Items]    
Less than 12 Months, Fair Value 213 402
Less than 12 Months, Unrealized Loss (2) (10)
12 Months or Greater, Fair Value 2,255 2,351
12 Months or Greater, Unrealized Loss (208) (307)
Total, Fair Value 2,468 2,753
Total, Unrealized Loss $ (210) $ (317)