Annual report pursuant to Section 13 and 15(d)

Investments in Marketable Debt Securities, Available-for-Sale - Amortized Cost and Fair Value of Investments in Available for Sale Securities Unrealized Loss Position (Detail)

v3.24.0.1
Investments in Marketable Debt Securities, Available-for-Sale - Amortized Cost and Fair Value of Investments in Available for Sale Securities Unrealized Loss Position (Detail) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Marketable Securities [Line Items]    
Available for sale securities continuous unrealized loss position for less than 12 months, fair value $ 56,934 $ 209,028
Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss (75) (3,501)
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value 57,509 79,003
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (2,560) (2,007)
Available for sale securities continuous unrealized loss position, fair value 114,443 288,031
Available for sale securities continuous unrealized loss position, gross unrealized loss (2,635) (5,508)
U.S. treasuries    
Marketable Securities [Line Items]    
Available for sale securities continuous unrealized loss position for less than 12 months, fair value 9,982 73,055
Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss (1) (1,232)
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value 20,610 66,144
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (415) (640)
Available for sale securities continuous unrealized loss position, fair value 30,592 139,199
Available for sale securities continuous unrealized loss position, gross unrealized loss (416) (1,872)
U.S. government sponsored entities    
Marketable Securities [Line Items]    
Available for sale securities continuous unrealized loss position for less than 12 months, fair value 0 447
Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss 0 (46)
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value 488 87
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (58) (20)
Available for sale securities continuous unrealized loss position, fair value 488 534
Available for sale securities continuous unrealized loss position, gross unrealized loss (58) (66)
Corporate debt    
Marketable Securities [Line Items]    
Available for sale securities continuous unrealized loss position for less than 12 months, fair value 45,251 130,816
Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss (59) (1,909)
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value 30,423 10,681
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (1,650) (1,063)
Available for sale securities continuous unrealized loss position, fair value 75,674 141,497
Available for sale securities continuous unrealized loss position, gross unrealized loss (1,709) (2,972)
Asset-backed securities (“ABS”) and other    
Marketable Securities [Line Items]    
Available for sale securities continuous unrealized loss position for less than 12 months, fair value 1,701 4,710
Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss (15) (314)
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value 5,988 2,091
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (437) (284)
Available for sale securities continuous unrealized loss position, fair value 7,689 6,801
Available for sale securities continuous unrealized loss position, gross unrealized loss $ (452) $ (598)