EARNINGS PER SHARE (Reconciliation of the shares used in the basic and diluted net income per share computation) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Mar. 28, 2020	Dec. 28, 2019	Mar. 30, 2019	Dec. 29, 2018	Mar. 28, 2020	Mar. 30, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			800
NUMERATOR:
Net income	$ 11,888	$ 13,477	$ (3,555)	$ 7,517	$ 25,365	$ 3,962
DENOMINATOR:
Weighted average shares outstanding - Basic (in shares)	63,679		65,930		63,675	66,530
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units	$ 540		$ 0		$ 591	$ 814
Weighted average shares outstanding - Diluted	64,219		65,930		64,266	67,344
EPS:
Net income per share - Basic (in dollars per share)	$ 0.19		$ (0.05)		$ 0.40	$ 0.06
Effect of dilutive shares (in dollars per share)	0		0		0.01	0
Net income per share - Diluted (in dollars per share)	$ 0.19		$ (0.05)		$ 0.39	$ 0.06