Investments - Schedule of Contractual Maturities of Investments (Detail) - USD ($) $ in Thousands		Dec. 31, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Available-for-sale investments, amortized cost basis, due in one year or less		$ 165,466
Available-for-sale investments, amortized Cost Basis, due after one year through five years		5,498
Available-for-sale Investments, amortized cost basis, Total		170,964
Available-for-sale investments, aggregate fair value, due in one year or less	[1]	165,662
Available-for-sale investments, aggregate fair value, due after one year through five years		5,482
Available-for-sale investments, aggregate fair value, Total		$ 171,144
Held-to-maturity investments, amortized cost basis, due in one year or less	[1]		$ 115,263
Held-to-maturity investments, amortized cost basis, due after one year through five years			7,155
Held-to-maturity investments, amortized cost basis, total			122,418
Held-to-maturity investments, aggregate fair value, due in one year or less			115,374
Held-to-maturity Investments, aggregate fair value, due after one year through five years			7,197
Held-to-maturity investments aggregate fair value, total			$ 122,571

[1] The investments due in one year or less include cash equivalents of $14.7 million as of December 31, 2024 and $58.6 million as of December 31, 2023.