STOCK BASED COMPENSATION - Performance-based RSUs and DSUs (Details) shares in Thousands	12 Months Ended
	Dec. 28, 2019 $ / shares shares
Performance-Based Restricted Stock Units
Number of Stock Units
Balance at the beginning (in shares) | shares	1,411
Granted (in shares) | shares	0
Vested (in shares) | shares	(1,284)
Forfeited/cancelled (in shares) | shares	(127)
Balance at the end (in shares) | shares	0
Weighted Average Grant Date Fair Value
Balance at the beginning (in dollars per share) | $ / shares	$ 31.74
Granted (in dollars per share) | $ / shares	0
Vested (in dollars per share) | $ / shares	31.74
Forfeited/cancelled (in dollars per share) | $ / shares	31.74
Balance at the end (in dollars per share) | $ / shares	$ 0
Restricted stock units (RSUs)
Number of Stock Units
Balance at the beginning (in shares) | shares	7
Granted (in shares) | shares	338
Vested (in shares) | shares	(10)
Forfeited/cancelled (in shares) | shares	(39)
Balance at the end (in shares) | shares	296
Weighted Average Grant Date Fair Value
Balance at the beginning (in dollars per share) | $ / shares	$ 17
Granted (in dollars per share) | $ / shares	23.69
Vested (in dollars per share) | $ / shares	17.51
Forfeited/cancelled (in dollars per share) | $ / shares	22.84
Balance at the end (in dollars per share) | $ / shares	$ 23.85
Deferred stock units
Number of Stock Units
Balance at the beginning (in shares) | shares	13
Granted (in shares) | shares	10
Vested (in shares) | shares	0
Forfeited/cancelled (in shares) | shares	0
Balance at the end (in shares) | shares	23
Weighted Average Grant Date Fair Value
Balance at the beginning (in dollars per share) | $ / shares	$ 17
Granted (in dollars per share) | $ / shares	24.80
Vested (in dollars per share) | $ / shares	0
Forfeited/cancelled (in dollars per share) | $ / shares	0
Balance at the end (in dollars per share) | $ / shares	$ 20.39