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Business Combinations - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 16, 2013 Ace [Member]	Mar. 31, 2014 Ace [Member]	Mar. 24, 2014 U.S. Insulation [Member]	Mar. 31, 2014 U.S. Insulation [Member]	Mar. 31, 2014 "ACE" and "U.S. Insulation" Acquisition [Member]	Mar. 31, 2013 "ACE" and "U.S. Insulation" Acquisition [Member]
Business Acquisition [Line Items]
Membership interests of Ace			100.00%
Purchase price			$ 687	$ 687	$ 2,006	$ 2,006
Seller obligation		300	300	300	279	279
Percentage of Common stock acquired					100.00%
Amortization expense of intangible assets	$ 697	$ 791					$ 21	$ 47

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- Definition

Common Stock Acquired Percentage

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

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

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-Name Accounting Standards Codification

-Topic 805

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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-Glossary Investing Activities

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