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The amount of inventory recognized as of the acquisition date.

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-SubTopic 20

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

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

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Acquisitions - Summary of Assets Acquired and Liabilities Assumed (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 01, 2013
Assets:
Goodwill	$ 11,502us-gaap_Goodwill	$ 11,726us-gaap_Goodwill	$ 7,199us-gaap_Goodwill
Bayer Material Science [Member]
Assets:
Inventory				9,002
Property, plant and equipment				37,000
Identifiable intangible assets				17,800
Goodwill				4,642
Total assets acquired				68,444
Liabilities:
Accrued expenses				232
Net assets acquired				$ 68,212