Restructuring and Integration - Summary of Restructuring and Integration Charges and Reserve Activity (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 and other employee costs	$ 1,596	$ 6	$ 2,324	$ 17
Other	(5)		22
Restructuring Reserve [Roll Forward]
Reserve beginning balance			1,099
Charges	1,591	6	2,346	17
Non-cash Adjustments			(61)
Cash Reductions			(992)
Reserve ending balance	2,392		2,392
Severance and Other Employee Costs [Member]
Restructuring Reserve [Roll Forward]
Reserve beginning balance			0
Charges			2,324
Non-cash Adjustments			0
Cash Reductions			(252)
Reserve ending balance	2,072		2,072
Site Closure and Other Associated Costs [Member]
Restructuring Reserve [Roll Forward]
Reserve beginning balance			1,099
Charges			22
Non-cash Adjustments			(61)
Cash Reductions			(740)
Reserve ending balance	320		320
Operating Segments [Member] | Life Sciences [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other employee costs	1,596	0	1,596	0
Other	0		0
Restructuring Reserve [Roll Forward]
Charges	1,596	0	1,596	0
Operating Segments [Member] | Mobile Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other employee costs	0	6	0	17
Other	(5)		22
Restructuring Reserve [Roll Forward]
Charges	(5)	6	22	17
Operating Segments [Member] | Power Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other employee costs	0	0	0	0
Other	0		0
Restructuring Reserve [Roll Forward]
Charges	0	0	0	0
Corporate and Eliminations [Member] | Corporate and Consolidations [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other employee costs	0	0	728	0
Other	0		0
Restructuring Reserve [Roll Forward]
Charges	$ 0	$ 0	$ 728	$ 0