ACCOUNTING POLICIES, Stock Based Compensation (Details) - shares	12 Months Ended
Dec. 28, 2019	Dec. 29, 2018
Stock Appreciation Rights (SARs) [Member]
Stock Based Compensation [Abstract]
Options granted (in shares)	96,000	51,000

Gross number of share options (or share units) granted during the period.

No definition available.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration