Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Operating Activities:
Net income	$ 6,638	$ 29,949
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation	7,790	6,753
Amortization	3,708	3,244
Stock-based compensation	1,117	1,492
Bad debt expense	82	479
Deferred income taxes	(5,440)	(2,087)
Gain on sale of investment in joint venture in Kazakhstan	(1,229)
Changes in operating assets and liabilities:
Accounts receivable	(14,151)	23,624
Costs and estimated earnings in excess of billings on uncompleted contracts	(5,846)	11,107
Inventories	(2,747)	11,922
Prepaid expenses and other current assets	3,795	1,971
Accounts payable and income taxes payable	6,459	(19,958)
Accrued liabilities	(10,910)	(6,383)
Billings in excess of costs and estimated earnings on uncompleted contracts	33,511	(9,978)
Other	2,464	68
Net cash provided by operating activities	25,241	52,203
Investing Activities:
Proceeds from sale of fixed assets	308	14
Purchases of property, plant and equipment	(4,072)	(3,461)
Proceeds from sale of investment in joint venture in Kazakhstan	1,229
Buyout of noncontrolling interest - Powell Asia		(659)
Acquisition of Powell Canada		(23,394)
Net cash used in investing activities	(2,535)	(27,500)
Financing Activities:
Borrowings on Canadian revolving line of credit	4,947	891
Payments on Canadian revolving line of credit	(4,955)	(3,265)
Payments on Canadian term loan		(242)
Payments on industrial development revenue bonds	(400)	(400)
Payments on deferred acquisition payable		(4,292)
Other	(250)	1,308
Net cash used in financing activities	(658)	(6,000)
Net increase in cash and cash equivalents	22,048	18,703
Effect of exchange rate changes on cash and cash equivalents	(135)	992
Cash and cash equivalents at beginning of period	115,353	97,403
Cash and cash equivalents at end of period	$ 137,266	$ 117,098

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The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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The net cash inflow or outflow from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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