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Note 6 - Income Taxes (Detail) - The change in the valuation allowance for deferred tax assets: (USD $)
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12 Months Ended | ||
|---|---|---|---|
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Sep. 30, 2012
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Sep. 30, 2011
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Sep. 30, 2010
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| Balance, | $ 7,600,000 | ||
| Deductions/Other | 9,906,000 | 4,696,000 | 5,599,000 |
| Balance, | 11,148,000 | 7,600,000 | |
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2010 [Member]
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| Balance, | 32,340,000 | ||
| Charged to Costs and Expenses | (2,800,000) | ||
| Deductions/Other | (2,799,000) | ||
| Balance, | 26,741,000 | ||
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2011 [Member]
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|||
| Balance, | 26,741,000 | ||
| Charged to Costs and Expenses | (2,500,000) | ||
| Deductions/Other | (2,196,000) | ||
| Balance, | 22,045,000 | ||
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Year 2012 [Member]
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|||
| Balance, | 22,045,000 | ||
| Charged to Costs and Expenses | (4,900,000) | ||
| Deductions/Other | (5,006,000) | ||
| Balance, | $ 12,139,000 | ||
| X | ||||||||||
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- Definition
The change during the period in the entity's deferred tax assets and liabilities attributable to continuing operations as determined by applying enacted tax laws other than federal, domestic, foreign, state or local. Items affecting deferred income taxes and required to be disclosed, but not included elsewhere, would also be designated as "Other"; for example, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity and adjustments to be beginning-of-year balance of a valuation allowance because of a change in circumstance that causes a change in judgment about the realizability of the related deferred tax asset in future periods. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount after allocation of valuation allowances of noncurrent deferred tax asset attributable to deductible temporary differences and carryforwards. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the change in the period in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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