BUSINESS SEGMENTS, MAJOR CUSTOMERS AND SIGNIFICANT GROUP CONCENTRATIONS OF CREDIT RISK (Details Textual) - segment	12 Months Ended
Dec. 30, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Number of reportable segments	3
Revenue contribution of top ten customers (percent)	82.00%	77.00%

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration