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SHARE-BASED COMPENSATION SHARE-BASED COMPENSATION (Outstanding DSUs) (Details) - DSUs - shares
12 Months Ended
Jan. 03, 2021
Dec. 29, 2019
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Number, outstanding, beginning of fiscal year (in shares) 234,827 275,000
Granted (in shares) 90,000 48,000
Granted for dividends declared (in shares) 2,000 3,000
Forfeited (in shares) (26,000) (91,000)
Number, outstanding, end of fiscal year (in shares) 301,077 234,827