Acquisitions - Schedule of Fair Value of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Sep. 18, 2023
Business Acquisition [Line Items]
Goodwill	$ 141,956	$ 142,129
Speechly, Inc.
Business Acquisition [Line Items]
Cash and cash equivalents			$ 970
Other current assets acquired			111
Developed technology, useful life of five years			2,800
Goodwill			7,536
Other current liabilities assumed			(1,117)
Other long-term liabilities assumed			(182)
Total purchase price			$ 10,118
Estimated useful life			5 years