ORGANIZATION AND OPERATIONS OF THE COMPANY - Fiscal Years (Details) - item	3 Months Ended				12 Months Ended
	Dec. 27, 2019	Sep. 28, 2018	Jun. 29, 2018	Mar. 30, 2018	Dec. 27, 2019	Dec. 28, 2018	Dec. 29, 2017
Summary of Significant Accounting Policies [Line Items]
Number of VIE					1
Length of fiscal period		91 days	91 days	91 days	364 days	364 days	364 days
Minimum
Summary of Significant Accounting Policies [Line Items]
Length of fiscal period	91 days				364 days
Maximum
Summary of Significant Accounting Policies [Line Items]
Length of fiscal period	98 days				371 days