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Acquisitions - Summary of Preliminary Estimated Fair Value of Assets Acquired and Liabilities Assumed (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Dec. 31, 2012
Jun. 30, 2014
Granville-Phillips [Member]
May 30, 2014
Granville-Phillips [Member]
Business Acquisition [Line Items]          
Inventory         $ 6,223
Other assets         490
Intangible assets         39,050
Goodwill 193,050 150,909 150,733 41,412 41,412
Warranty liability         (175)
Total purchase price         $ 87,000