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INVENTORIES (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
INVENTORIES
Parts and raw materials	$ 20,279	$ 20,649
Work-in-process	3,506	3,369
Finished goods	4,502	4,350
Inventory, gross	28,287	28,368
Less reserves	(4,004)	(3,938)
Inventories, net	$ 24,283	$ 24,430

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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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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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