Significant Accounting Policies - Schedule of estimated useful lives of Finite Lived Intangible Assets (Detail)	12 Months Ended
	Dec. 31, 2020
Licenses And Permits [Member] | Minimum [member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Licenses And Permits [Member] | Maximum [member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Trade Names [Member] | Minimum [member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years
Trade Names [Member] | Maximum [member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Customer Relationships [Member] | Minimum [member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years
Customer Relationships [Member] | Maximum [member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Non Competition Agreement [Member] | Minimum [member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 years
Non Competition Agreement [Member] | Maximum [member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years