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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. 30, 2019	Dec. 29, 2018	Mar. 31, 2018	Dec. 30, 2017	Mar. 30, 2019	Mar. 31, 2018
NUMERATOR:
Net income/(loss)	$ (3,555)	$ 7,517	$ 36,313	$ (69,528)	$ 3,962	$ (33,215)
DENOMINATOR:
Weighted average shares outstanding - Basic (in shares)	65,930		70,361		66,530	70,467
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units	$ 0		$ 1,064		$ 814	$ 0
Weighted average shares outstanding - Diluted	65,930		71,425		67,344	70,467
EPS:
Net income per share - Basic (in dollars per share)	$ (0.05)		$ 0.52		$ 0.06	$ (0.47)
Effect of dilutive shares (in dollars per share)	(0.00)		0.01		(0.00)	(0.00)
Net income per share - Diluted (in dollars per share)	$ (0.05)		$ 0.51		$ 0.06	$ (0.47)

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Earnings per share, diluted, adjustment.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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