Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Income Taxes [Abstract]
Allowance for doubtful accounts	$ 367	$ 89
Workers compensation	360	39
Stock-based compensation	729	354
Reserve for accrued employee benefits	1,546	1,579
Warranty accrual	1,336	935
Depreciation and amortization	1,366	956
Deferred compensation	1,013	1,343
Postretirement benefits liability	373	460
Accrued legal	114	182
Uniform capitalization and inventory	3,683	4,667
Goodwill impairment	1,285	1,360
Other	14	41
Net operating loss	4,787	3,144
Gross deferred tax asset	16,973	15,149
Less: valuation allowance	7,498	6,215
Deferred tax asset	9,475	8,934
Uncompleted contracts	(2,455)	(3,221)
Other		(5)
Capital lease		(109)
Deferred tax liabilities	(2,455)	(3,335)
Net deferred income tax asset	$ 7,020	$ 5,599