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Investment in Non-Consolidated Joint Venture - Additional Information (Detail) (USD $) | 3 Months Ended | 9 Months Ended | 1 Months Ended |
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 Joint Venture [Member] | Aug. 29, 2014 Joint Venture [Member] | Aug. 29, 2014 Income Approach Valuation Technique [Member] Equity Method Investments [Member] Joint Venture [Member]
Schedule Of Results Related To Equity Accounted Investees [Line Items] |  |  |  |  |  |  |
Acquired investment in joint venture |  |  |  |  |  | 49.00% |
Joint venture investment, fair value |  |  |  |  |  |  | $ 35,595,000
Amount due from joint venture |  |  |  |  | 0 |  |
Net sales | $ 125,632,000 | $ 93,023,000 | $ 334,840,000 | $ 283,125,000 | $ 0 |  |

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