GOODWILL AND OTHER INTANGIBLE ASSETS (Intangible Assets) (Details) - USD ($) $ in Thousands	Aug. 31, 2015	Aug. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 47,838	$ 53,835
Accumulated Amortization	31,490	29,601
Net	16,348	24,234
Customer base
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	35,369	38,078
Accumulated Amortization	28,814	25,989
Net	6,555	12,089
Favorable land leases
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	10,091	11,661
Accumulated Amortization	2,101	2,075
Net	7,990	9,586
Non-competition agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,629	779
Accumulated Amortization	217	40
Net	1,412	739
Brand name
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	648	3,216
Accumulated Amortization	306	1,452
Net	342	1,764
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	101	101
Accumulated Amortization	52	45
Net	$ 49	$ 56