Goodwill - Changes in Carrying Amount of Goodwill (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Beginning Balance		$ 439,452,000	$ 454,612,000
Currency impact and other		(357,000)	(5,705,000)
Goodwill acquired in acquisitions			167,945,000
Impairments		0	(182,542,000)	$ 0
Measurement period adjustments			5,142,000
Ending Balance	$ 439,452,000	439,095,000	439,452,000	454,612,000
Life Sciences
Goodwill [Line Items]
Beginning Balance		344,947,000	177,784,000
Currency impact and other		(631,000)	(3,118,000)
Goodwill acquired in acquisitions			165,288,000
Impairments		0	0
Measurement period adjustments			4,993,000
Ending Balance	344,947,000	344,316,000	344,947,000	177,784,000
Mobile Solutions
Goodwill [Line Items]
Beginning Balance		0	74,147,000
Currency impact and other		0	(705,000)
Goodwill acquired in acquisitions			0
Impairments			(73,442,000)
Measurement period adjustments			0
Ending Balance	0	0	0	74,147,000
Power Solutions
Goodwill [Line Items]
Beginning Balance		94,505,000	202,681,000
Currency impact and other		274,000	(1,882,000)
Goodwill acquired in acquisitions			2,657,000
Impairments	(109,100,000)		(109,100,000)
Reduction in goodwill		1,600,000
Measurement period adjustments			149,000
Ending Balance	$ 94,505,000	$ 94,779,000	$ 94,505,000	$ 202,681,000