Restructuring and Integration - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Restructuring and Related Activities [Abstract]
Restructuring and integration expense, net	$ 0	$ (209,000)	$ (12,000)	$ 2,137,000
Pay period for accrued restructuring and integration costs			1 year 5 months 25 days
Restructuring and related cost, expected cost remaining	$ 400,000		$ 400,000