Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2013	Feb. 29, 2012
Revenues	$ 197	$ 312	$ 338	$ 623
Cost of revenues	92	100	187	293
Gross profit	105	212	151	330
Selling, general and administrative expenses	7,350	6,850	14,610	13,324
Real Estate Rental Operations [Member]
Revenues	197	312	338	623
Cost of revenues	92	100	187	293
Gross profit	105	212	151	330
Selling, general and administrative expenses	85	91	146	183
Distribution Operations [Member]
Revenues	28,323	27,114	57,442	53,264
Cost of revenues	20,382	19,846	41,446	38,780
Gross profit	7,941	7,268	15,996	14,484
Selling, general and administrative expenses	7,265	6,759	14,464	13,141
Segment Operation [Member]
Revenues	28,520	27,426	57,780	53,887
Cost of revenues	20,474	19,946	41,633	39,073
Gross profit	8,046	7,480	16,147	14,814
Selling, general and administrative expenses	$ 7,350	$ 6,850	$ 14,610	$ 13,324