LEASES (Future Minimum Rental Commitments Under Non-Cancelable Operating Leases) (Details) - USD ($) $ in Thousands	Dec. 27, 2019	Dec. 28, 2018
Finance Leases, After Adoption of 842:
Remainder of 2020	$ 6,286
2021	6,184
2022	3,895
2023	3,362
2024	3,362
Thereafter	23,322
Total undiscounted lease payments	46,411
Less: Imputed interest	(5,443)
Total net lease liability	40,968
Operating Leases, Prior To Adoption of 842:
2019		$ 5,792
2020		7,187
2021		5,835
2022		3,719
2023		2,517
Thereafter		24,832
Total		49,882
Affiliated Entity
Finance Leases, After Adoption of 842:
Remainder of 2020	781
2021	1,067
2022	179
2023	0
2024	0
Thereafter	0
Total undiscounted lease payments	2,027
Less: Imputed interest	(38)
Total net lease liability	$ 1,989
Operating Leases, Prior To Adoption of 842:
2019		755
2020		1,036
2021		1,067
2022		179
2023		0
Thereafter		0
Total		$ 3,037

Amount of lessee's undiscounted obligation for lease payments for operating lease.

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