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Financial Instruments - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule Of Available For Sale Securities [Line Items]
Other than temporary impairment losses	$ 0	$ 0	$ 0
Investments in marketable equity securities with readily determinable fair values	900,000	2,500,000
Unrealized losses on equity securities	1,591,000	4,190,000	4,615,000
Debt Securities
Schedule Of Available For Sale Securities [Line Items]
Other than temporary impairment losses	$ 0	$ 0	$ 0

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- Definition

Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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