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Business Combinations - Summary of Estimated Fair Value of Assets Acquired and Liabilities Assumed (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 0 Months Ended 3 Months Ended 0 Months Ended 3 Months Ended
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]
Business Acquisition [Line Items]          
Accounts receivable     $ 213   $ 1,122
Inventory     14   234
Other current assets          105
Property and equipment     263   520
Intangibles     1,106   846
Goodwill          1,217
Accounts payable and accrued expenses     (609)   (1,362)
Deferred tax liability          (397)
Total purchase price     987   2,285
Seller obligations 300 300 300 279 279
Cash paid   687 687 2,006 2,006
Total purchase price     $ 987   $ 2,285