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Income Taxes - Components of total tax expense (benefit) (Detail) (USD $)
12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Income Tax Disclosure [Abstract]      
Current tax expense $ 6,612 $ 1,252,286 $ 3,876,255
Deferred tax expense (benefit) 8,612 (283,333) 321,117
Total tax expense $ 15,224 $ 968,953 $ 4,197,372