Quarterly report pursuant to Section 13 or 15(d)

Agreements (Details Textual)

v2.4.0.6
Agreements (Details Textual) (USD $)
9 Months Ended 12 Months Ended
Nov. 30, 2011
Aug. 31, 2012
Minimum [Member]
Nov. 30, 2011
Corridor Infra Trust Management [Member]
Agreements (Textual) [Abstract]      
Quarterly management fee percentage on the value of company's average monthly managed assets     0.25%
Annual management fee percentage on the value of company's average monthly managed assets     1.00%
Quarterly incentive fee on increase in distributions paid     10.00%
Threshold distribution per quarter     $ 0.125
Annually rate of fee percentage on the value of company's average daily managed assets 0.04%    
Administrator minimum annual fee   $ 30,000