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Acquisition - Summary of Purchase Price and Estimated Fair Value of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Dec. 01, 2023	Sep. 30, 2024	Dec. 31, 2023
Fair value of net assets acquired:
Excess purchase price over fair value of net assets acquired ("goodwill")		$ 888,808	$ 684,345
SADA Systems, LLC
Business Acquisition [Line Items]
Cash paid to acquire business	$ 426,050
Fair value of net assets acquired:
Current assets	348,043
Identifiable intangible assets - see description below	158,100
Property and equipment	2,266
Other assets	244,342
Current liabilities	(332,010)
Long-term liabilities, including long-term accounts payable	(115,171)
Total fair value of net assets acquired	305,570
Excess purchase price over fair value of net assets acquired ("goodwill")	$ 120,480