Restructuring and Integration - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Restructuring and Related Activities [Abstract]
Restructuring and integration expense, net	$ 0	$ 1,591,000	$ (12,000)	$ 2,346,000
Pay period for accrued restructuring and integration costs			1 year 7 months 25 days
Restructuring and related cost, expected cost remaining	$ 500,000		$ 500,000

Amount of expected cost remaining for the specified restructuring cost.

No definition available.

Name:	us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant