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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands, shares in Millions
12 Months Ended
Aug. 07, 2019
May 20, 2019
Feb. 28, 2019
Dec. 12, 2018
Sep. 28, 2019
Sep. 29, 2018
Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Dividends declared (in usd per share) $ 0.12 $ 0.12 $ 0.12 $ 0.12 $ 0.48 $ 0.24 $ 0
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%    
Relative Total Shareholder Return Average Stock Price Calculation Period         90 days    
Total Shareholder Return Award Performance Measurement Period         3 years    
Proceeds from Stock Options Exercised         $ 14 $ 55 $ 509
Minimum [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Defined Contribution Plan, Employer Matching Contribution, Percent         4.00%    
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage         0.00%    
Maximum [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Defined Contribution Plan, Employer Matching Contribution, Percent         6.00%    
Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage         200.00%    
Equity Incentive Plan 2009 [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         4.0    
Non Employee Director [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Grant of common shares, upon initial election to board, value         $ 120    
Grant of common shares, upon initial election to board, quarterly, value         $ 37