INVENTORIES (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
INVENTORIES
Parts and raw materials	$ 23,758	$ 23,978
Work-in-process	7,205	6,628
Finished goods	4,749	4,928
Inventory, gross	35,712	35,534
Less reserves	(4,304)	(4,436)
Inventories	$ 31,408	$ 31,098

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- Definition

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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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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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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- Definition

Amount of valuation reserve for inventory.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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