Quarterly report pursuant to Section 13 or 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)

v3.23.2
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
Jun. 30, 2023
Dec. 31, 2022
Marketable Securities [Line Items]    
Available for sale securities continuous unrealized loss position for less than 12 months, fair value $ 154,457 $ 209,028
Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss (786) (3,501)
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value 71,373 79,003
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (3,883) (2,007)
Available for sale securities continuous unrealized loss position, fair value 225,830 288,031
Available for sale securities continuous unrealized loss position, gross unrealized loss (4,669) (5,508)
U.S. treasuries    
Marketable Securities [Line Items]    
Available for sale securities continuous unrealized loss position for less than 12 months, fair value 42,767 73,055
Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss (139) (1,232)
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value 39,930 66,144
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (1,056) (640)
Available for sale securities continuous unrealized loss position, fair value 82,697 139,199
Available for sale securities continuous unrealized loss position, gross unrealized loss (1,195) (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 509 87
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (64) (20)
Available for sale securities continuous unrealized loss position, fair value 509 534
Available for sale securities continuous unrealized loss position, gross unrealized loss (64) (66)
Corporate debt    
Marketable Securities [Line Items]    
Available for sale securities continuous unrealized loss position for less than 12 months, fair value 107,067 130,816
Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss (564) (1,909)
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value 25,047 10,681
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (2,242) (1,063)
Available for sale securities continuous unrealized loss position, fair value 132,114 141,497
Available for sale securities continuous unrealized loss position, gross unrealized loss (2,806) (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 4,623 4,710
Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss (83) (314)
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value 5,887 2,091
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (521) (284)
Available for sale securities continuous unrealized loss position, fair value 10,510 6,801
Available for sale securities continuous unrealized loss position, gross unrealized loss $ (604) $ (598)