SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Leases (Details) - renewal_option	12 Months Ended
	Dec. 25, 2019	Sep. 25, 2019
Operating Leased Assets [Line Items]
Number of renewal options	2
Period of renewal term	5 years
Minimum
Operating Leased Assets [Line Items]
Terms of lease contract	10 years	10 years
Maximum
Operating Leased Assets [Line Items]
Terms of lease contract	15 years	15 years