| Note 11 - Capital Expenditure Commitments (Detail) (USD $) | 9 Months Ended | 
|---|---|
| Jun. 30, 2012 | |
| Manufacturing Capacity | 100,000,000 | 
| Long-term Purchase Commitment, Amount | $ 526,000 | 
| Development in Process | 196,000 | 
| Total Construction And Development Costs [Member] | |
| Construction and Development Costs | 665,000 | 
| Remaining Construction And Development Costs [Member] | |
| Construction and Development Costs | $ 330,000 | 
| X | ||||||||||
| 
- Definition No authoritative reference available. No definition available. 
 | 
| X | ||||||||||
| 
- Definition The aggregate costs related to construction and development services during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
 | 
| X | ||||||||||
| 
- Definition The current amount of expenditures for a real estate project that has not yet been completed. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
 | 
| X | ||||||||||
| 
- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment. No definition available. 
 |