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SHARE-BASED COMPENSATION SHARE-BASED COMPENSATION (Outstanding DSUs) (Details) - DSUs - shares	12 Months Ended
	Dec. 31, 2017	Jan. 01, 2017
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number, outstanding, beginning of fiscal year (in shares)	255,472	226,000
Granted (in shares)	35,000	36,000
Granted for dividends declared (in shares)	3,000	2,000
Forfeited (in shares)	0	9,000
Number, outstanding, end of fiscal year (in shares)	292,873	255,472

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- Definition

Number Of Other Equity Instruments Granted, Excluding Granted For Dividends Declared

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

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- Definition

The number of other equity instruments (ie other than share options) forfeited in a share-based payment arrangement.

+ References

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The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement.

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