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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

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