Cost of oil and gas properties: (Tables)

12 Months Ended

Jun. 30, 2013

Cost of oil and gas properties:

Schedule of costs (capitalized and expensed) incurred in oil and gas property acquisition, exploration and development activities

	2013			2012		2011
Property acquisitions	$	178,685		$	109,076	$	448,432
Exploration	—			—		—
Development	(290,569		)	8,224,013		10,175,986
	$	(111,884	)	$	8,333,089	$	10,624,418

Schedule of capitalized costs relating to oil and gas producing activities

	2013			2012			2011
Proved properties	$	56,009,780		$	56,121,665		$	47,788,575
Unproved properties	—			—			—
	56,009,780			56,121,665			47,788,575
Less: accumulated depreciation, depletion and amortization of oil and gas properties	19,105,645			15,860,758			9,774,375
Total properties	36,904,135			40,260,907			38,014,200
Less: accumulated impairment of oil and gas properties due to full cost ceiling test	(22,181,701		)	(22,181,701		)	(22,181,701		)
Net properties	$	14,722,434		$	18,079,206		$	15,832,499

Schedule of the results of operations from oil and gas producing activities

	2013			2012			2011
Revenues:
Revenues	$	3,843,420		$	6,939,999		$	6,133,299
Preferred return	—			—			—
	3,843,420			6,939,999			6,133,299
Expenses (excluding G&A and interest expense):
Production, operating and development costs	1,872,186			1,972,223			1,857,528
Depreciation, depletion and amortization	3,248,260			6,090,529			3,707,255
Impairment loss on oil and gas properties	—			—			—
	5,120,446			8,062,752			5,564,783
Results before income taxes	(1,277,026		)	(1,122,753		)	568,516
Provision for income taxes	—			—			—
Results of operations (excluding corporate overhead and interest expense)	$	(1,277,026	)	$	(1,122,753	)	$	568,516