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						9 Months Ended
	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Jun. 27, 2020	Jun. 29, 2019
NUMERATOR:
Net income	$ 11,151	$ 11,888	$ 13,477	$ 1,287	$ (3,555)	$ 7,517	$ 36,516	$ 5,249
DENOMINATOR:
Weighted average shares outstanding - Basic (in shares)	62,313			64,683			63,200	65,914
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units	$ 520			$ 748			$ 555	$ 683
Weighted average shares outstanding - Diluted	62,833			65,431			63,755	66,597
EPS:
Net income per share - Basic (in dollars per share)	$ 0.18			$ 0.02			$ 0.58	$ 0.08
Effect of dilutive shares (in dollars per share)	0			0			0.01	0
Net income per share - Diluted (in dollars per share)	$ 0.18			$ 0.02			$ 0.57	$ 0.08