| Note 4 - (Detail) | 6 Months Ended | 
|---|---|
| Jun. 30, 2012 | |
| Conversion Of Equity | one | 
| Number Of Shares Used In Ratio (in Shares) | 3,000 | 
| X | ||||||||||
| 
- Definition The item represents the conversion ratio used in the conversion of equity shares. No definition available. 
 | 
| X | ||||||||||
| 
- Definition Number of shares used as part of calculation of ratio of Certificates of Proprietary Interest to Sub-share Certificates in Certificates of Proprietary Interest . No definition available. 
 |