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)

v3.22.4
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, 2022
Dec. 31, 2021
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities continuous unrealized loss position for less than 12 months, fair value $ 209,028 $ 221,957
Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss (3,501) (503)
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value 79,003 146
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (2,007) (8)
Available for sale securities continuous unrealized loss position, fair value 288,031 222,103
Available for sale securities continuous unrealized loss position, gross unrealized loss (5,508) (511)
U.S. treasuries    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities continuous unrealized loss position for less than 12 months, fair value 73,055 103,019
Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss (1,232) (297)
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value 66,144 0
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (640) 0
Available for sale securities continuous unrealized loss position, fair value 139,199 103,019
Available for sale securities continuous unrealized loss position, gross unrealized loss (1,872) (297)
U.S. government sponsored entities    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities continuous unrealized loss position for less than 12 months, fair value 447 115
Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss (46) (3)
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value 87 0
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (20) 0
Available for sale securities continuous unrealized loss position, fair value 534 115
Available for sale securities continuous unrealized loss position, gross unrealized loss (66) (3)
Corporate debt    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities continuous unrealized loss position for less than 12 months, fair value 130,816 115,908
Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss (1,909) (173)
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value 10,681 146
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (1,063) (8)
Available for sale securities continuous unrealized loss position, fair value 141,497 116,054
Available for sale securities continuous unrealized loss position, gross unrealized loss (2,972) (181)
ABS and other    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities continuous unrealized loss position for less than 12 months, fair value 4,710 2,915
Available for sale securities continuous unrealized loss position for less than 12 months, gross unrealized loss (314) (30)
Available for sale securities continuous unrealized loss position for 12 months or longer, fair value 2,091 0
Available for sale securities continuous unrealized loss position for 12 months or longer, gross unrealized loss (284) 0
Available for sale securities continuous unrealized loss position, fair value 6,801 2,915
Available for sale securities continuous unrealized loss position, gross unrealized loss $ (598) $ (30)