Fair Value Measurements - Additional Information (Detail) $ in Millions		12 Months Ended
	Apr. 04, 2017 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of contingent consideration		$ 1.6	$ 8.1
Contingent consideration agreement, payment period		3 years
Contingent liability, noncurrent			8.1
Measurement Input, Discount period
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cost of debt, discount period		3 years
Minimum | Measurement Input, Discount rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cost of debt, discount rate		0.0378
Maximum | Measurement Input, Discount rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cost of debt, discount rate		0.0493
Headway
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of contingent consideration	$ 15.9	$ 1.6	$ 8.1
Contingent consideration agreement, payment period	3 years	3 years