Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Cash flows provided by operating activities:
Net income	$ 20,100	$ 25,208	$ 24,140
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,631	7,991	6,681
Loss on sale, disposal and abandonment of assets	3,455	89	0
Equity in net income of joint ventures, net of dividends	(1,788)	(1,280)	(397)
Stock-based compensation and related net tax benefits	2,994	1,998	1,802
Current and long-term deferred taxes, net	2,908	1,687	4,421
Changes in operating assets and liabilities:
Increase in accounts receivable, net	(7,636)	(1,855)	(619)
Decrease (increase) in prepaid taxes	2,774	514	(1,649)
Other operating assets, net	(3,850)	(3,984)	(4,805)
Increase (decrease) in accounts payable and other accrued liabilities	3,401	(886)	(1,092)
Other operating liabilities, net	1,678	1,755	(2,208)
Net cash provided by operating activities	35,667	31,237	26,274
Cash flows used by investing activities:
Acquisition of property, plant & equipment	(15,196)	(12,923)	(15,978)
Acquisition of joint ventures and businesses, net of cash acquired	(110,057)	(2,847)	(32,014)
Other investing activities, net	(880)	(1,579)	0
Net cash used by investing activities	(126,133)	(17,349)	(47,992)
Cash flows provided (used) by financing activities:
Net borrowings on revolving credit facility	(19,803)	7,313	12,504
Long-term borrowings - proceeds	146,647	0	0
Long-term borrowings - repayment	(5,300)	0	0
Dividends paid to stockholders	(20,808)	(20,593)	(20,091)
Other financing activities, net	(210)	(155)	724
Net cash provided (used) by financing activities	100,526	(13,435)	(6,863)
Effects of foreign currency translation	(341)	(198)	(253)
Net increase (decrease) in cash and cash equivalents	9,719	255	(28,834)
Opening balance - cash and cash equivalents	7,914	7,659	36,493
Ending balance - cash and cash equivalents	17,633	7,914	7,659
Supplemental disclosure of cash flow information:
Cash paid for interest, net of amounts capitalized	3,582	436	365
Cash paid for income taxes	$ 2,050	$ 8,011	$ 8,746