EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Reconciliation of shares for basic and diluted net income per share
Net income attributable to YETI Holdings, Inc.	$ 4,742	$ 21,302	$ 22,223	$ 2,167	$ 25,169	$ 17,030	$ 18,825	$ (3,261)	$ 50,434	$ 57,763	$ 15,401
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted average common shares outstanding—basic									85,088	81,777	81,479
Effect of dilutive securities									1,259	1,742	1,493
Weighted average common shares outstanding—diluted									86,347	83,519	82,972
Earnings Per Share, Basic and Diluted [Abstract]
Basic (in dollars per share)	$ 0.05	$ 0.25	$ 0.26	$ 0.03	$ 0.30	$ 0.21	$ 0.23	$ (0.04)	$ 0.59	$ 0.71	$ 0.19
Diluted (in dollars per share)	$ 0.05	$ 0.25	$ 0.26	$ 0.03	$ 0.30	$ 0.21	$ 0.23	$ (0.04)	$ 0.58	$ 0.69	$ 0.19