GOODWILL AND OTHER INTANGIBLE ASSETS (Intangible Assets) (Details) - USD ($) $ in Thousands	Aug. 31, 2016	Aug. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 18,570	$ 47,838
Accumulated Amortization	5,989	31,490
Net	12,581	16,348
Customer base
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,160	35,369
Accumulated Amortization	2,714	28,814
Net	3,446	6,555
Favorable land leases
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	10,081	10,091
Accumulated Amortization	2,518	2,101
Net	7,563	7,990
Non-competition agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,600	1,629
Accumulated Amortization	371	217
Net	1,229	1,412
Brand name
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	628	648
Accumulated Amortization	328	306
Net	300	342
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	101	101
Accumulated Amortization	58	52
Net	$ 43	$ 49