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Summary of Property, Plant and Equipment (Detail) (USD $) In Thousands, unless otherwise specified							12 Months Ended				12 Months Ended				12 Months Ended				12 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Land	Dec. 31, 2012 Land	Dec. 31, 2013 Buildings and improvements	Dec. 31, 2012 Buildings and improvements	Dec. 31, 2013 Buildings and improvements Minimum	Dec. 31, 2013 Buildings and improvements Maximum	Dec. 31, 2013 Machinery and equipment	Dec. 31, 2012 Machinery and equipment	Dec. 31, 2013 Machinery and equipment Minimum	Dec. 31, 2013 Machinery and equipment Maximum	Dec. 31, 2013 Office furniture, fixtures and equipment	Dec. 31, 2012 Office furniture, fixtures and equipment	Dec. 31, 2013 Office furniture, fixtures and equipment Minimum	Dec. 31, 2013 Office furniture, fixtures and equipment Maximum	Dec. 31, 2013 Automotive equipment	Dec. 31, 2012 Automotive equipment	Dec. 31, 2013 Automotive equipment Minimum	Dec. 31, 2013 Automotive equipment Maximum	Dec. 31, 2013 Construction in progress	Dec. 31, 2012 Construction in progress	Dec. 31, 2013 Construction in progress Minimum	Dec. 31, 2013 Construction in progress Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment Useful Life							10 years	30 years			3 years	15 years			3 years	10 years			3 years	6 years			3 years	15 years
Property, plant and equipment, Gross	$ 131,419	$ 116,159	$ 2,458	$ 2,458	$ 14,167	$ 12,537			$ 94,184	$ 89,089			$ 9,717	$ 8,400			$ 278	$ 312			$ 10,615	$ 3,363
Less accumulated depreciation	(78,951)	(70,458)
Total Property, plant and equipment	$ 52,468	$ 45,701

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 1

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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229



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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229



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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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