STOCK OPTIONS AND OTHER SHARE-BASED COMPENSATION - Nonvested Stock Options (Details) - $ / shares	6 Months Ended	12 Months Ended
	Jan. 03, 2020	Jun. 28, 2019	Jun. 29, 2018	Jun. 30, 2017
Shares
Nonvested stock options June 28, 2019 (in shares)	856,753
Granted (in shares)	738,956
Vested (in shares)	(856,753)
Nonvested stock options January 3, 2020 (in shares)	738,956	856,753
Weighted-Average Grant-Date Fair Value Per Share
Nonvested stock options June 28, 2019 (in dollars per share)	$ 20.28
Granted (in dollars per share)	38.61	$ 30.05	$ 18.60	$ 13.82
Vested (in dollars per share)	20.28
Nonvested stock options January 3, 2020 (in dollars per share)	$ 38.61	$ 20.28