Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Inventory [Line Items]
Raw materials	$ 23,692	$ 28,146
Finished goods	7,176	6,188
Sales demonstration inventory	19,545	18,729
Reserve for excess and obsolete	(1,473)	(4,169)
Inventory	48,940	48,894
Service inventory	$ 19,033	$ 19,125

Inventory used for the repair of warranted and non-warranted equipment previously sold to customers.

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount of valuation reserve for inventory.

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Gross amount of merchandise, goods, commodities, or supplies to which the entity holds the title and uses for the specific purpose of showing the benefits and features of the entity's products to existing or potential customers.

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