INVENTORIES (Details) - USD ($) $ in Thousands	Dec. 27, 2015	Dec. 28, 2014
Inventory [Line Items]
Total inventories	$ 801,357	$ 790,305
Chicken inventories [Member]
Inventory [Line Items]
Total inventories	772,909	789,768
Live chicken and hens [Member]
Inventory [Line Items]
Total inventories	365,062	363,438
Feed, eggs and other [Member]
Inventory [Line Items]
Total inventories	215,859	198,681
Finished chicken products [Member]
Inventory [Line Items]
Total inventories	191,988	227,649
Commercial feed, table eggs and other [Member]
Inventory [Line Items]
Total inventories	$ 28,448	$ 537