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SELECTED STATEMENTS OF OPERATIONS DATA (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2016
Net Investment Income [Line Items]
Income (loss) resulting from devaluation of the local currency in Venezuela	$ 969	$ 907

X

- Definition

Represents the amount of foreign currency transaction remeasurement gain (loss) recognized in the income statement.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration