Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 30, 2012	Nov. 30, 2011
Cash flows from operating activities:
Net income	$ 1,707	$ 592
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	3,383	3,512
Non-cash interest on Series A Preferred Stock		1,019
Stock-based compensation	417	238
Loss (gain) on sale of fixed assets	12	(3)
Deferred income tax expense	965	1,358
Non-cash loss (gain) on hedging transactions	705	3,742
Change in assets and liabilities:
Trade accounts receivable	(2,397)	(1,238)
Prepaid expenses	43	127
Inventories	3,112	2,967
Decrease (increase) in margin accounts	(2,969)	(1,763)
Accounts payable and accrued liabilities	(416)	2,406
Income tax receivable	11	(210)
Pension benefit liability	431	(61)
Other receivables	935	(263)
Other	1,005	139
Net cash flow provided by operating activities	6,944	12,562
Cash flows from investing activities:
Acquisition of property, plant and equipment, net	(3,425)	(2,458)
Other		11
Net cash used in investing activities	(3,425)	(2,447)
Cash flows from financing activities:
Proceeds from revolving line of credit	2,500	3,500
Payments on revolving line of credit	(3,500)	(9,500)
Payments of long-term debt	(50)	(50)
Payments under capital lease obligations	(68)	(58)
Payment on financing arrangements	(697)	(380)
Increase (decrease) in cash overdraft	(1,737)	(3,635)
Other		(9)
Net cash used in financing activities	(3,552)	(10,132)
Increase (decrease) in cash and cash equivalents	(33)	(17)
Cash and cash equivalents, beginning of period	154	281
Cash and cash equivalents, end of period	$ 121	$ 264