Percentage of voting equity interests acquired at the acquisition date in the business combination.

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- Definition

Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Business Segment Information - Additional Information (Detail) $ in Thousands			1 Months Ended	12 Months Ended
	Apr. 23, 2018 USD ($)	Sep. 11, 2017 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2018 USD ($) Segment	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2018
Segment Reporting [Abstract]
Number of reportable segments \| Segment				2
Segment Reporting Information [Line Items]
Purchase price, net of cash acquired				$ 0	$ 59,798	$ 0
Certified Thermoplastics Co., LLC
Segment Reporting Information [Line Items]
Equity interest acquired	100.00%						100.00%
Purchase price, net of cash acquired	$ 30,700
Gross purchase price	$ 30,810
Lightning Diversion Systems, Inc.
Segment Reporting Information [Line Items]
Equity interest acquired		100.00%	100.00%
Purchase price, net of cash acquired		$ 60,000	$ 60,000
Gross purchase price		$ 62,000	$ 62,000