Related Party Transactions - Payments Recieved from (paid to) JEX and REX during Ordinary Course of Business (Details) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Olympic [Member]
Related Party Transaction [Line Items]
Revenue payments for ownership in wells	$ (1,510,000)	$ (2,261,000)	$ (3,050,000)	$ (4,615,000)
Joint interest billing receipts	235,000	251,000	529,000	680,000
Juneau Exploration LLC [Member]
Related Party Transaction [Line Items]
Revenue payments for ownership in wells	(1,089,000)	(1,429,000)
Joint interest billing receipts	199,000	257,000
REX [Member]
Related Party Transaction [Line Items]
Revenue payments for ownership in wells	(741,000)	(418,000)	(1,590,000)	(448,000)
Joint interest billing receipts	230,000	776,000	321,000	1,858,000
JEX [Member]
Related Party Transaction [Line Items]
Revenue payments for ownership in wells			(2,222,000)	(2,712,000)
Joint interest billing receipts			$ 419,000	$ 503,000