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EMPLOYEES' RETIREMENT PLANS (Benefit Obligation and Fair Value of Plan Assets) (Details) $ in Thousands	12 Months Ended
	Aug. 31, 2019 USD ($)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	$ 0
Acquisition	26,336
Service cost	354
Interest cost	926
Actuarial loss	4,883
Benefits paid	(838)
Benefit obligation at end of year	31,661
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	0
Acquisition	21,023
Actual return on plan assets	2,887
Administrative expenses	(69)
Employer contributions	432
Benefits paid	(838)
Fair value of plan assets at end of year	23,435
Funded status at end of year (net liability recognized in balance sheet as of August 31)	(8,226)
Net actuarial loss	$ 2,823

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Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.

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Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

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