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Changes to Asset Retirement Obligation (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Jun. 30, 2015
Asset Retirement Obligation Disclosure [Abstract]          
Balance at beginning of period     $ 1,294,497 $ 1,291,066 $ 1,291,066
Accretion (Note 10) $ 36,998 $ 33,692 73,996 $ 67,384 134,768
Payments     (125,222)   (131,337)
Balance at end of period $ 1,243,271   $ 1,243,271   $ 1,294,497