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Organization and Significant Accounting Policies - Additional Information (Detail) (USD $)
 1 Months Ended 12 Months Ended 125 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended 12 Months Ended
May 31, 2013
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Oct. 21, 2011
Employee
Sep. 30, 2011
Sep. 30, 2013
Minimum
Sep. 30, 2013
Maximum
Sep. 30, 2013
Commercial bonds
Oct. 11, 2013
Subsequent Event
Oct. 31, 2013
Subsequent Event
Sep. 30, 2013
Wise Power
Schedule Of Investments [Line Items]                        
Cash for fund operations   $ 19,114,444 $ 3,377,288 $ 19,114,444   $ 7,507,389            
Maturity description   less than 24 months             less than 18 months      
Net increase (decrease) in cash   15,737,156 (4,130,101) 19,114,444                
Cash from issuance of equity 36,000,000 44,500,000               60,000,000 60,000,000  
Cash outflow related to continuing operating activities   19,800,000                    
Proceeds from sale of investments   1,419,079 509,009 4,732,688               1,400,000
Proceeds from Revenue   200,000                    
Capital expenditures   300,000                    
Investments                 10,800,000      
Number of employees at the time of acquisition         41              
Amount insured in FDIC per account   250,000   250,000                
Amortized cost of bonds   10,732,414   10,732,414                
Unrealized Loss on Securities   41,643                    
Unrealized Gain on Securities   7,500                    
Fair value of investments   10,698,271   10,698,271                
Property, Plant and Equipment, Useful Life             3 years 7 years        
Minority equity investment, book value   0   0                
Restricted Cash   $ 0 $ 0 $ 0