Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Summary Of Other Intangible Assets [Line Items]
Gross carrying amount	$ 118,251	$ 119,392
Accumulated amortization	67,690	54,408
Net carrying amount	50,561	64,984
Gross carrying amount	129,230	130,522
Net carrying amount	61,540	76,114
Developed Technology [Member]
Summary Of Other Intangible Assets [Line Items]
Gross carrying amount	78,170	78,841
Accumulated amortization	46,983	37,651
Net carrying amount	$ 31,187	$ 41,190
Developed Technology [Member] | Minimum [Member]
Summary Of Other Intangible Assets [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	4 years	4 years
Developed Technology [Member] | Maximum [Member]
Summary Of Other Intangible Assets [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	6 years	6 years
Customer Relationships [Member]
Summary Of Other Intangible Assets [Line Items]
Gross carrying amount	$ 39,739	$ 40,207
Accumulated amortization	20,582	16,673
Net carrying amount	$ 19,157	$ 23,534
Customer Relationships [Member] | Minimum [Member]
Summary Of Other Intangible Assets [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	7 years	7 years
Customer Relationships [Member] | Maximum [Member]
Summary Of Other Intangible Assets [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	10 years	10 years
Other Intangibles [Member]
Summary Of Other Intangible Assets [Line Items]
Gross carrying amount	$ 342	$ 344
Accumulated amortization	125	84
Net carrying amount	$ 217	$ 260
Other Intangibles [Member] | Minimum [Member]
Summary Of Other Intangible Assets [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	4 years	4 years
Other Intangibles [Member] | Maximum [Member]
Summary Of Other Intangible Assets [Line Items]
Weighted-average useful life of acquired finite-lived intangible assets	10 years	10 years
Trade Names [Member]
Summary Of Other Intangible Assets [Line Items]
Net carrying amount	$ 10,979	$ 11,130