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Investments in Foreign Joint Ventures - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($) Joint_Ventures	Mar. 31, 2015 USD ($)
Schedule Of Equity Method Investments [Line Items]
Interest in joint venture foreign | Joint_Ventures	2
Net sales	$ 8,298	$ 15,311
Affiliated Entity
Schedule Of Equity Method Investments [Line Items]
Net sales	$ 40	$ 150
BOMAY
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	40.00%
Joint venture term	12 years
Baoji Oilfield Machinery Co. Ltd.
Schedule Of Equity Method Investments [Line Items]
Interest in Joint Venture	51.00%
AA Energies, Inc.
Schedule Of Equity Method Investments [Line Items]
Interest in Joint Venture	9.00%
MIEFE
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	41.00%
Losses recognized from investment	$ 270
MIEFE | Accrued in Other Current Liabilities
Schedule Of Equity Method Investments [Line Items]
Remaining investment from joint venture	$ 270
MIEFE's general manager
Schedule Of Equity Method Investments [Line Items]
Interest in Joint Venture	8.00%
Sonepar of France
Schedule Of Equity Method Investments [Line Items]
Interest in Joint Venture	51.00%

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