|
Redeemable Capital Shares (Details) (USD $)
|
6 Months Ended | 12 Months Ended |
|---|---|---|
|
Apr. 30, 2013
|
Oct. 31, 2012
|
|
| Activity in redeemable capital Shares | ||
| Opening balance, Shares | 450,000 | 600,000 |
| Opening balance, Amount | $ 71,738,811 | $ 96,109,435 |
| Shares issued, Shares | 400,000 | 250,000 |
| Shares issued, Amount | 61,935,095 | 39,142,894 |
| Shares redeemed, Shares | (250,000) | (400,000) |
| Shares redeemed, Amount | (38,720,876) | (62,590,899) |
| Adjustment to period Shares due to currency movement and other, Shares | ||
| Adjustment to period Shares due to currency movement and other, Amount | (2,702,539) | (922,619) |
| Ending balance, Shares | 600,000 | 450,000 |
| Ending balance, Amount | $ 92,250,491 | $ 71,738,811 |