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ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
ACCRUED EXPENSES [Abstract]
Sales commissions	$ 2,549		$ 2,461
Subcontracting labor	1,648		1,408
Salaries, bonuses and related benefits	15,452		16,531
Warranty accrual	1,251		1,769
Other	8,352		8,339
Accrued expenses	29,252		$ 30,508
Warranty Accrual Activity Account [Roll Forward]
Balance	1,769	$ 2,718
Charges and costs accrued	0	27
Adjustments related to pre-existing warranties (including changes in estimates)	(379)	(282)
Less repair costs incurred	(148)	(119)
Currency translation	9	73
Balance	$ 1,251	$ 2,417

X

- Definition

Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to subcontracting labor. Used to reflect current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Represents the aggregate increase in the charges and costs accrued of the standard product warranty.

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for sales commissions. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability.

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Amount of foreign currency translation gain (loss) which decreases (increases) the standard product warranty accrual. Excludes extended product warranties.

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Amount of increase (decrease) in the standard product warranty accrual. Excludes extended product warranties.

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Amount of increase (decrease) in the standard product warranty accrual from changes in estimates attributable to preexisting product warranties. Excludes extended product warranties.

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