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The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

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Summary of Purchase Price Allocation (Detail) (USD $) In Thousands, unless otherwise specified			6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Global Thermoelectric Inc	Jun. 30, 2014 Order backlog Global Thermoelectric Inc	Jun. 30, 2014 Customer Relationships Global Thermoelectric Inc	Jun. 30, 2014 Technology Global Thermoelectric Inc	Jun. 30, 2014 Trade Names Global Thermoelectric Inc
Business Acquisition [Line Items]
Accounts receivable			$ 10,200
Inventory			6,487
Intangible assets				815	5,524	2,807	725
Prepaid expenses and other assets			258
Property and equipment			716
Goodwill	32,247	25,809	6,601
Assumed liabilities			(6,530)
Net assets acquired			31,102
Cash acquired on acquisition			3,061
Purchase price			$ 34,163