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WORKERS' COMPENSATION INSURANCE AND RESERVES - Reconciliation of Workers' Compensation Claims Reserve (Details) - USD ($)
$ in Thousands
Jun. 26, 2022
Dec. 26, 2021
Workers' Compensation Insurance and Reserves [Abstract]    
Undiscounted workers’ compensation reserve $ 284,051 $ 273,000
Less discount on workers’ compensation reserve 16,453 16,806
Workers' compensation reserve, net of discount 267,598 256,194
Less current portion 56,024 61,596
Long-term portion $ 211,574 $ 194,598