Related Party Transactions	9 Months Ended
Related Party Transactions	Mar. 31, 2016
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Mr. Brad Juneau, the Company's Chairman, President and Chief Executive Officer, is also the sole manager of JEX, a private company involved in the exploration and production of oil and natural gas. JEX was responsible for securing and negotiating the Tetlin Lease and assisting in obtaining other properties and initially engaged Avalon Development Corporation ("Avalon") to conduct mineral exploration activities on the Tetlin Lease. In agreeing to transfer its interests in such properties to Contango Mining, a predecessor of the Company, JEX retained a 3.0% overriding royalty interest in the properties transferred. In September 2012, the Company and JEX entered into an Advisory Agreement in which JEX provided assistance in acquiring additional properties in Alaska in exchange for an overriding royalty of 2.0% on properties acquired after July 1, 2012. On September 29, 2014, pursuant to a Royalty Purchase Agreement between JEX and Royal Gold (the “Royalty Purchase Agreement”), JEX sold its entire overriding royalty interest in the Tetlin Property to Royal Gold. On the same date, the Company terminated its Advisory Agreement with JEX. The Company subleases office space from JEX at 3700 Buffalo Speedway, Ste 925, Houston, TX 77098. The Company recently extended its lease expiration to February 2019 and renegotiated the rent to approximately $13,800 per quarter.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.