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Investment in Non-Consolidated Joint Venture - Summarized Balance Sheet Information for Joint Venture (Detail) (Joint Venture [Member], USD $) In Thousands, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
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Joint Venture [Member] |  |
Schedule Of Results Related To Equity Accounted Investees [Line Items] |  |
Current assets | $ 21,366 | $ 21,488
Non-current assets | 20,176 | 19,106
Total assets | 41,542 | 40,594
Current liabilities | 12,387 | 13,477
Total liabilities | $ 12,387 | $ 13,477

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