STOCK-BASED COMPENSATION (Valuation Assumptions) (Details) - $ / shares	12 Months Ended
Dec. 30, 2018	Dec. 31, 2017
Stock-Based Compensation [Abstract]
Weighted-average fair value of options granted during the period	$ 3.73	$ 1.78
Expected life (in years)	6 years 2 months 12 days	5 years 3 months 18 days
Expected stock volatility	45.94%	43.47%
Risk-free interest rate	2.90%	2.00%

Performance Shares, Stock Options, Other Forms Of Compensation And Common Share Repurchases [Abstract]

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Weighted average expected volatility rate of share-based compensation awards.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
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