ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Reclassification from AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Unrealized gain (loss) on derivatives:
Net of income taxes	$ 333	$ (32)	$ 853	$ 142
Foreign Currency Translation | SG&A expenses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Translation loss realized upon liquidation of investment in foreign entity	968	0	968	0
Unrealized gain (loss) on derivatives
Unrealized gain (loss) on derivatives:
Reclassification adjustments from AOCI on derivatives, before tax	459	(21)	1,090	230
Income tax effect	(126)	(11)	(237)	(88)
Net of income taxes	333	(32)	853	142
Unrealized gain (loss) on derivatives | Commodity | Cost of goods sold
Unrealized gain (loss) on derivatives:
Reclassification adjustments from AOCI on derivatives, before tax	94	(263)	(31)	(373)
Unrealized gain (loss) on derivatives | Foreign exchange | Cost of goods sold
Unrealized gain (loss) on derivatives:
Reclassification adjustments from AOCI on derivatives, before tax	19	223	(25)	641
Unrealized gain (loss) on derivatives | Foreign exchange | Net sales
Unrealized gain (loss) on derivatives:
Reclassification adjustments from AOCI on derivatives, before tax	124	(168)	368	(561)
Unrealized gain (loss) on derivatives | Foreign exchange | SG&A expenses
Unrealized gain (loss) on derivatives:
Reclassification adjustments from AOCI on derivatives, before tax	88	53	378	123
Unrealized gain (loss) on derivatives | Interest rate | Interest expense
Unrealized gain (loss) on derivatives:
Reclassification adjustments from AOCI on derivatives, before tax	134	134	400	400
Defined benefit obligation
Defined benefit obligation:
Income tax effect	(2)	0	(6)	(1)
Net of income taxes	9	2	27	5
Defined benefit obligation | SG&A expenses
Defined benefit obligation:
Amortization of prior services	$ 11	$ 2	$ 33	$ 6