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EMPLOYEES' RETIREMENT PLANS (Net Periodic Benefit Cost) (Details)
$ in Thousands
 12 Months Ended
Aug. 31, 2019
USD ($)
Defined Benefit Plan Disclosure [Line Items]  
Service cost $ 354
Interest cost 926
Total net periodic benefit cost 522
Net actuarial loss arising during measurement period 2,823
Total recognized in other comprehensive income 2,823
Total recognized in net periodic benefit cost and other comprehensive income 3,345
Cost of Goods Sold  
Defined Benefit Plan Disclosure [Line Items]  
Service cost 354
Selling, General and Administrative Expenses  
Defined Benefit Plan Disclosure [Line Items]  
Expected administrative expenses 250
Interest cost 926
Expected return on plan assets $ (1,008)