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EQUITY-BASED COMPENSATION - Schedule of Stock Options (Details) - 2015 Incentive Award Plan - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 30, 2020	Dec. 25, 2019	Dec. 26, 2018
Stock Options
Outstanding at beginning of period (in shares)	890,267
Granted (in shares)	6,170
Exercised (in shares)	(405,688)
Forfeited (in shares)	(1,725)
Outstanding at end of period (in shares)	489,024	890,267
Options vested and exercisable at end of period (in shares)	474,744
Options expected to vest (in shares)	14,280
Weighted Average Exercise Price
Outstanding at beginning of period (in USD per share)	$ 21.44
Granted (in USD per share)	35.89
Exercised (in USD per share)	21.20
Forfeited (in USD per share)	(21.00)
Outstanding at end of period (in USD per share)	21.83	$ 21.44
Weighted average options vested and exercisable (in USD per share)	21.25
Options expected to vest (in USD per share)	$ 41.09
Aggregate Intrinsic Value
Outstanding at end of period	$ 30,824
Options exercised during period	30,199
Options expected to vest as of December 30, 2020	$ 625
Weighted Average Remaining Contractual Life (Years)
Outstanding at end of period	4 years 2 months 12 days
Options exercisable at end of year	4 years 1 month 6 days
Options expected to vest at end of year	8 years 2 months 12 days
Stock options
Weighted Average Exercise Price
Granted (in USD per share)	$ 16.21	$ 26.42	$ 19.86
Aggregate Intrinsic Value
Options exercised during period	$ 25,824	$ 16,905	$ 5,786

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