Restructuring and Integration - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Restructuring Cost and Reserve [Line Items]
Severance costs	$ 1,596	$ 6	$ 2,324	$ 17
Pay period for accrued restructuring and integration costs			2 years 8 months 12 days
Restructuring and Related Cost, Expected Cost Remaining	$ 0		$ 0
Precision Engineered Products Group [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs			$ 700