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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Narrative) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended				6 Months Ended
	Feb. 28, 2019	Mar. 30, 2019	Dec. 29, 2018	Mar. 31, 2018	Dec. 30, 2017	Mar. 30, 2019	Mar. 31, 2018	Jan. 31, 2019	Jul. 10, 2018	Aug. 15, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Description Of Maximum Percentage Of Employee Contributions and Matching Contributions Based Upon Years Of Service						employee contributions and matching Company contributions from 4% to 6%
Stock repurchase program, authorized amount								$ 300,000	$ 200,000	$ 100,000
Shares repurchased in period (shares)		(1,225)				(2,500)
Value of shares acquired		$ 26,922	$ 25,485	$ 21,470	$ 3,280	$ 52,400
Remaining repurchase authorized amount		145,300				145,300
Cash dividends declared per share (in dollars per share)	$ 0.12
Dividend payment		$ (8,100)				$ (16,112)	$ 0
Relative Total Shareholder Return Average Stock Price Calculation Period						90 days
Total Shareholder Return Award Performance Measurement Period						3 years
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay						4.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage		0.00%				0.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay						6.00%
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage		200.00%				200.00%
Equity Incentive Plan 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		4,000				4,000

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