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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
Dec. 31, 2014
Joint Venture [Member]
 
Schedule Of Results Related To Equity Accounted Investees [Line Items]  
Current assets $ 24,140us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets
/ dei_LegalEntityAxis
= us-gaap_CorporateJointVentureMember
Non-current assets 21,519us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets
/ dei_LegalEntityAxis
= us-gaap_CorporateJointVentureMember
Total assets 45,659us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets
/ dei_LegalEntityAxis
= us-gaap_CorporateJointVentureMember
Current liabilities 14,162us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities
/ dei_LegalEntityAxis
= us-gaap_CorporateJointVentureMember
Total liabilities $ 14,162us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilities
/ dei_LegalEntityAxis
= us-gaap_CorporateJointVentureMember