Acquisitions - Additional Information (Detail) - USD ($)				3 Months Ended		5 Months Ended	9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	May 07, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Aug. 09, 2018	Feb. 22, 2018
Business Acquisition [Line Items]
Contract base price			$ 375,000,000.0
Acquisition related costs				$ 597,000	$ 619,000		$ 5,810,000	$ 619,000
Financing costs							12,900,000
Income (loss) from operations				5,881,000	$ 5,551,000		9,283,000	$ 32,045,000
Paragon Medical Inc
Business Acquisition [Line Items]
Acquisition percentage			100.00%
Cash payment to acquire business	$ 390,861,000	$ 390,961,000
Cash acquired from acquisition	13,552,000	$ 13,418,000		13,552,000		$ 13,552,000	13,552,000
Cash received to settle working capital adjustments				1,400,000
Intangible assets acquired in acquisition	157,600,000			157,600,000		157,600,000	157,600,000
Goodwill	159,400,000			159,400,000		159,400,000	159,400,000
Goodwill expected tax deductible amount	$ 2,800,000			$ 2,800,000		2,800,000	2,800,000
Acquisition related costs							5,300,000
Net sales						70,000,000
Income (loss) from operations						2,200,000
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Cash payment to acquire business							22,000,000
Acquisition related costs							$ 500,000
Bridgemedica, LLC
Business Acquisition [Line Items]
Acquisition percentage										100.00%
Net sales						7,300,000
Income (loss) from operations						$ 200,000
Southern California Technical Arts, Inc.
Business Acquisition [Line Items]
Acquisition percentage									100.00%