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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	Mar. 31, 2015	Dec. 31, 2014
Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Current assets	$ 26,024	$ 24,140
Non-current assets	22,700	21,519
Total assets	48,724	45,659
Current liabilities	11,776	14,162
Total liabilities	$ 11,776	$ 14,162

The amount of assets reported by an equity method investment of the entity.

The amount of current assets reported by an equity method investment of the entity.

The amount of current liabilities reported by an equity method investment of the entity.

The amount of liabilities reported by an equity method investment of the entity.

The amount of noncurrent assets reported by an equity method investment of the entity.