STOCK-BASED COMPENSATION - Schedule of Non-Vested Stock and Restricted Stock Units (Details) - Directors and certain management employees - Non-vested stock and restricted stock units - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Stock Based Compensation
Shares granted	216,971	85,251	78,318
Weighted‑average per share price on grant date	$ 236.28	$ 161.73	$ 145.89
Recognized compensation expense	$ 16,147	$ 9,081	$ 8,815
Weighted-average period for grant of stock-based compensation	3 years 2 months 15 days
Deferred stock-based compensation granted	$ 55,838
Prospera
Stock Based Compensation
Shares granted	159,982
Recognized compensation expense	$ 36,916
Vesting period of options	4 years