Restructuring - Activity in Restructuring Liability Accounts (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 609
Provision, net	183
Usage	(308)
Transfer	(484)
Lease/Rental Terminations [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	495
Provision, net	(11)
Transfer	(484)
One-Time Employee Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	114
Provision, net	194
Usage	$ (308)