2.4.0.81030 - Disclosure - Restricted Cashtruefalsefalse1false falsefalseD2014Q1http://www.sec.gov/CIK0001477032duration2013-04-01T00:00:002013-06-30T00:00:001true 1us-gaap_RestrictedCashAndInvestmentsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Restricted Cash2false 2us-gaap_RestrictedAssetsDisclosureTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div style="font-size:10.0pt;font-family:Times New Roman;"> Note 3 — Restricted Cash   Under the terms of the Second Extension Agreement we entered into with the Karlsson Group on June 26, 2013, we are required to deposit 50% of the net proceeds of the next $20.0 million of capital we raise (for a total of $10.0 million) into escrow, which funds may be used solely to fund specified development expenses pursuant to the Extension Agreement.  As of June 30, 2013, we had approximately $2.4 million remaining in escrow related to our recently completed capital raising activities.  Pursuant to the Second Extension Agreement, this escrowed cash will be used to fund our planned in-fill drilling program and other related activities in the Holbrook Basin over the next several months.   </div>falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for assets that are restricted in their use, generally by contractual agreements or regulatory requirements. This would include, but not limited to, a description of the restricted assets and the terms of the restriction.No definition available.false0Restricted CashfalseRestricted CashUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.prospectgri.com/role/DisclosureRestrictedCash12