Cost of oil and gas properties: (Details) (USD $)	3 Months Ended								12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Costs incurred
Property acquisitions									$ 178,685	$ 109,076	$ 448,432
Development									(290,569)	8,224,013	10,175,986
Total costs incurred									(111,884)	8,333,089	10,624,418
Capitalized costs
Proved properties	56,009,780				56,121,665				56,009,780	56,121,665	47,788,575
Total	56,009,780				56,121,665				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				19,105,645	15,860,758	9,774,375
Total properties	36,904,135				40,260,907				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)	(22,181,701)	(22,181,701)
Net properties	14,722,434				18,079,206				14,722,434	18,079,206	15,832,499
Revenues:
Revenues									3,843,420	6,939,999	6,133,299
Total revenues	831,404	968,980	1,039,376	1,003,660	946,679	1,273,919	3,303,365	1,416,036	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
Operating costs and expenses									5,120,446	8,062,752	5,564,783
Results of operations
Results before income taxes									(1,277,026)	(1,122,753)	568,516
Results of operations (excluding corporate overhead and interest expense)									$ (1,277,026)	$ (1,122,753)	$ 568,516