SUPPLEMENTAL STATEMENT OF CASH FLOWS INFORMATION (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Supplemental Cash Flow Information [Abstract]
Interest paid	$ 19,396	$ 28,504	$ 29,879
Income taxes paid	3,524	16,347	20,640
Liabilities related to property and equipment outstanding	(1,000)	1,300	900
Accrued dividends payable on unvested options	$ 400	$ 1,700	$ 2,200