Quarterly report pursuant to Section 13 or 15(d)

Concentrations - Additional Information (Detail)

v2.4.0.6
Concentrations - Additional Information (Detail) (USD $)
3 Months Ended 6 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Concentration Risk [Line Items]        
Percentage of revenue from major customer 10.00%   10.00%  
Revenue from major customers $ 516,000 $ 1,833,000 $ 592,000 $ 2,415,000
Percentage of purchases from major supplier 100.00% 100.00% 100.00% 100.00%
Wheego Electric Cars [Member]
       
Concentration Risk [Line Items]        
Revenue from major customers $ 478,000 $ 0 $ 480,000 $ 323,000
Percentage of purchases from major supplier 93.00% 0.00% 81.00% 13.00%