LEASES (Details 2)	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020
LEASES
Weighted average remaining lease term (years) - operating leases	4 years 9 months 18 days	1 year 2 months 12 days
Weighted average discount rate - operating leases	0.80%	1.70%
Weighted average remaining lease term (years) - finance leases	4 years 4 months 24 days	4 years 2 months 12 days
Weighted average discount rate - finance leases	2.10%	5.80%