Marketable Securities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Marketable Securities [Line Items]
Marketable securities	$ 193,900,000	$ 197,800,000
Marketable securities unrealized gain	1,800,000	1,900,000
Marketable securities unrealized loss	100,000
Marketable securities unrealized loss, Less than twelve months	451,900,000	463,500,000
Marketable securities unrealized loss, more than twelve months	31,800,000	138,400,000
Marketable securities, non-current	0	1,973,000
Marketable equity securities unrealized gain	4,100,000
Net unrealized gain on equity securities	4,100,000
Available-for-sale debt securities remaining maturities greater than thirty months	$ 0
Other Comprehensive Income (Loss) [Member]
Marketable Securities [Line Items]
Marketable securities unrealized gain		$ 17,500,000