Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Consolidated Statements of Operations [Abstract]
Revenues	$ 209,655	$ 176,192	$ 197,148
Cost of Revenues	150,662	121,477	136,295
Gross Profit	58,993	54,715	60,853
Operating Expenses	44,641	48,045	45,325
Environmental Remediation Charges	6,000		13,700
Other Operating Gains	2,929
Operating Income	11,281	6,670	1,828
Interest and Other Income, Net	174	45	146
Interest Expense	10,521	10,656	10,735
Income (Loss) before Income Taxes	934	(3,941)	(8,761)
Income Tax Expense (Benefit)	8,170	(664)	(2,802)
Net Loss	$ (7,236)	$ (3,277)	$ (5,959)
Earnings (Loss) per Share:
Basic	$ (0.96)	$ (0.44)	$ (0.80)
Diluted	$ (0.96)	$ (0.44)	$ (0.80)
Weighted Average Shares Outstanding:
Basic	7,517,000	7,490,000	7,482,000
Diluted	7,517,000	7,490,000	7,482,000