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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands, shares in Millions
3 Months Ended
Dec. 12, 2019
Dec. 28, 2019
Dec. 29, 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)   (0.2)        
Value of shares acquired   $ 5,369 $ 25,485      
Remaining repurchase authorized amount   91,800        
Cash dividends declared per share (in dollars per share) $ 0.12          
Common stock cash dividends paid   $ (7,582) $ (8,057)      
Relative Total Shareholder Return Average Stock Price Calculation Period   90 days        
Total Shareholder Return Award Performance Measurement Period   3 years        
Minimum            
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%        
Maximum            
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%        
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   3.4