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Note 9 - Income Taxes (Detail) (USD $)
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Mar. 31, 2013
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| Deferred Tax Assets, Operating Loss Carryforwards, Domestic | $ 24,641,000 |
| Deferred Tax Assets, Operating Loss Carryforwards, State and Local | 12,363,000 |
| Deferred Tax Assets, Operating Loss Carryforwards, Foreign | $ 64,260,000 |
| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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