Acquisitions - Schedule of Net Purchase Prices Allocated to Assets Acquired and Liabilities Assumed (Detail) - Allied [Member] $ in Thousands	Apr. 01, 2017 USD ($)
Allocation of purchase price
Current assets	$ 7,184
Property, plant and equipment	13,821
Goodwill	30,685
Deferred tax liabilities	(13,958)
Assumed liabilities	(7,115)
Net assets acquired	62,319
Customer Relationships [Member]
Allocation of purchase price
Other intangibles	17,682
Trade Name [Member]
Allocation of purchase price
Other intangibles	12,910
Non-compete Agreements [Member]
Allocation of purchase price
Other intangibles	$ 1,110

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=75116654&loc=d3e31917-109318

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 1
-Subparagraph (c)
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The amount of identifiable intangible assets recognized as of the acquisition date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464

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Amount of liabilities assumed at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
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-Paragraph 1
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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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