Summary of Significant Accounting Policies - Amortization of Intangible Assets, Estimated Useful Life (Detail)	12 Months Ended
	Dec. 31, 2020
Customer Relationships [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets, estimated useful life	5 years
Customer Relationships [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets, estimated useful life	9 years
Technology [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets, estimated useful life	1 year
Technology [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets, estimated useful life	8 years
Backlog [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets, estimated useful life	2 years
Trademarks [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets, estimated useful life	7 years
Trademarks [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets, estimated useful life	9 years