Fixed Assets, Net - Additional Information (Detail) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Property, Plant and Equipment
Depreciation expense	$ 3,400,000		$ 4,400,000	$ 8,300,000	$ 9,300,000
Impairment charges			0		0
Software development costs capitalized	800,000		1,600,000	2,100,000	2,200,000
Amortization of software development costs	200,000		$ 600,000	$ 600,000	$ 1,100,000
Software, including software development costs
Property, Plant and Equipment
Impairment charges	$ 300,000	$ 1,300,000