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stock.","units":{"USD":[{"end":"2010-07-31","val":853652,"accn":"0001372167-11-000039","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2011-10-06","frame":"CY2010Q2I"},{"end":"2011-04-30","val":853652,"accn":"0001372167-11-000060","fy":2012,"fp":"Q2","form":"10-Q","filed":"2011-12-20"},{"end":"2011-04-30","val":853652,"accn":"0001372167-12-000004","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-01-03"},{"end":"2011-04-30","val":853652,"accn":"0001372167-12-000006","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-01-04"},{"end":"2011-04-30","val":853652,"accn":"0001372167-12-000040","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-03-21"},{"end":"2011-04-30","val":853652,"accn":"0001372167-12-000081","fy":2012,"fp":"FY","form":"10-K","filed":"2012-08-14"},{"end":"2011-04-30","val":853652,"accn":"0001372167-12-000088","fy":2012,"fp":"FY","form":"10-K/A","filed":"2012-08-14","frame":"CY2011Q1I"},{"end":"2011-07-31","val":853652,"accn":"0001372167-11-000039","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2011-10-06","frame":"CY2011Q2I"},{"end":"2011-10-31","val":853652,"accn":"0001372167-11-000060","fy":2012,"fp":"Q2","form":"10-Q","filed":"2011-12-20"},{"end":"2011-10-31","val":853652,"accn":"0001372167-12-000004","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-01-03"},{"end":"2011-10-31","val":853652,"accn":"0001372167-12-000006","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-01-04","frame":"CY2011Q3I"},{"end":"2012-01-31","val":853652,"accn":"0001372167-12-000040","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-03-21","frame":"CY2011Q4I"},{"end":"2012-04-30","val":853652,"accn":"0001372167-12-000081","fy":2012,"fp":"FY","form":"10-K","filed":"2012-08-14"},{"end":"2012-04-30","val":853652,"accn":"0001372167-12-000088","fy":2012,"fp":"FY","form":"10-K/A","filed":"2012-08-14"},{"end":"2012-04-30","val":853652,"accn":"0001372167-12-000107","fy":2013,"fp":"Q1","form":"10-Q","filed":"2012-09-18"},{"end":"2012-04-30","val":853652,"accn":"0001372167-12-000157","fy":2013,"fp":"Q2","form":"10-Q","filed":"2012-12-26"},{"end":"2012-04-30","val":853652,"accn":"0001372167-12-000159","fy":2013,"fp":"Q2","form":"10-Q/A","filed":"2012-12-26"},{"end":"2012-04-30","val":853652,"accn":"0001372167-13-000039","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-03-25"},{"end":"2012-04-30","val":853652,"accn":"0001372167-13-000108","fy":2013,"fp":"FY","form":"10-K/A","filed":"2013-08-15"},{"end":"2012-04-30","val":853652,"accn":"0001372167-14-000002","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-01-03","frame":"CY2012Q1I"},{"end":"2012-07-31","val":853652,"accn":"0001372167-12-000107","fy":2013,"fp":"Q1","form":"10-Q","filed":"2012-09-18","frame":"CY2012Q2I"},{"end":"2012-10-31","val":853652,"accn":"0001372167-12-000157","fy":2013,"fp":"Q2","form":"10-Q","filed":"2012-12-26"},{"end":"2012-10-31","val":853652,"accn":"0001372167-12-000159","fy":2013,"fp":"Q2","form":"10-Q/A","filed":"2012-12-26","frame":"CY2012Q3I"},{"end":"2013-01-31","val":853652,"accn":"0001372167-13-000039","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-03-25","frame":"CY2012Q4I"},{"end":"2013-04-30","val":853652,"accn":"0001372167-13-000108","fy":2013,"fp":"FY","form":"10-K/A","filed":"2013-08-15"},{"end":"2013-04-30","val":853652,"accn":"0001372167-13-000115","fy":2014,"fp":"Q1","form":"10-Q","filed":"2013-09-23"},{"end":"2013-04-30","val":853652,"accn":"0001372167-13-000163","fy":2014,"fp":"Q2","form":"10-Q","filed":"2013-12-23"},{"end":"2013-04-30","val":853652,"accn":"0001372167-14-000002","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-01-03"},{"end":"2013-04-30","val":853652,"accn":"0001372167-14-000078","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-03-10"},{"end":"2013-04-30","val":853652,"accn":"0001372167-14-000165","fy":2014,"fp":"FY","form":"10-K","filed":"2014-08-12"},{"end":"2013-04-30","val":518084,"accn":"0001372167-15-000134","fy":2013,"fp":"FY","form":"10-K","filed":"2015-10-15","frame":"CY2013Q1I"},{"end":"2013-07-31","val":853652,"accn":"0001372167-13-000115","fy":2014,"fp":"Q1","form":"10-Q","filed":"2013-09-23","frame":"CY2013Q2I"},{"end":"2013-10-31","val":853652,"accn":"0001372167-13-000163","fy":2014,"fp":"Q2","form":"10-Q","filed":"2013-12-23","frame":"CY2013Q3I"},{"end":"2014-01-31","val":853652,"accn":"0001372167-14-000078","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-03-10","frame":"CY2013Q4I"},{"end":"2014-04-30","val":853652,"accn":"0001372167-14-000165","fy":2014,"fp":"FY","form":"10-K","filed":"2014-08-12"},{"end":"2014-04-30","val":853652,"accn":"0001372167-14-000189","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-09-11"},{"end":"2014-04-30","val":853652,"accn":"0001372167-14-000311","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-11-26"},{"end":"2014-04-30","val":853652,"accn":"0001372167-15-000060","fy":2014,"fp":"Q3","form":"10-Q","filed":"2015-03-18"},{"end":"2014-04-30","val":518084,"accn":"0001372167-15-000134","fy":2013,"fp":"FY","form":"10-K","filed":"2015-10-15"},{"end":"2014-04-30","val":518084,"accn":"000137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of Debt Issuance Costs","description":"Amount of amortization expense attributable to debt issuance 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of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.","units":{"USD":[{"end":"2010-07-31","val":141607,"accn":"0001372167-11-000039","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2011-10-06","frame":"CY2010Q2I"},{"end":"2011-04-30","val":141607,"accn":"0001372167-11-000060","fy":2012,"fp":"Q2","form":"10-Q","filed":"2011-12-20"},{"end":"2011-04-30","val":141607,"accn":"0001372167-12-000004","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-01-03"},{"end":"2011-04-30","val":141607,"accn":"0001372167-12-000006","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-01-04"},{"end":"2011-04-30","val":141607,"accn":"0001372167-12-000040","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-03-21"},{"end":"2011-04-30","val":141607,"accn":"0001372167-12-000081","fy":2012,"fp":"FY","form":"10-K","filed":"2012-08-14"},{"end":"2011-04-30","val":141607,"accn":"0001372167-12-000088","fy":2012,"fp":"FY","form":"10-K/A","filed":"2012-08-14","frame":"CY2011Q1I"},{"end":"2011-07-31","val":141607,"accn":"0001372167-11-000039","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2011-10-06","frame":"CY2011Q2I"},{"end":"2011-10-31","val":141607,"accn":"0001372167-11-000060","fy":2012,"fp":"Q2","form":"10-Q","filed":"2011-12-20"},{"end":"2011-10-31","val":141607,"accn":"0001372167-12-000004","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-01-03"},{"end":"2011-10-31","val":141607,"accn":"0001372167-12-000006","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-01-04","frame":"CY2011Q3I"},{"end":"2012-01-31","val":143287,"accn":"0001372167-12-000040","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-03-21","frame":"CY2011Q4I"},{"end":"2012-04-30","val":143287,"accn":"0001372167-12-000081","fy":2012,"fp":"FY","form":"10-K","filed":"2012-08-14"},{"end":"2012-04-30","val":143287,"accn":"0001372167-12-000088","fy":2012,"fp":"FY","form":"10-K/A","filed":"2012-08-14"},{"end":"2012-04-30","val":143287,"accn":"0001372167-12-000107","fy":2013,"fp":"Q1","form":"10-Q","filed":"2012-09-18"},{"end":"2012-04-30","val":143287,"accn":"0001372167-12-000157","fy":2013,"fp":"Q2","form":"10-Q","filed":"2012-12-26"},{"end":"2012-04-30","val":143287,"accn":"0001372167-12-000159","fy":2013,"fp":"Q2","form":"10-Q/A","filed":"2012-12-26"},{"end":"2012-04-30","val":143287,"accn":"0001372167-13-000039","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-03-25"},{"end":"2012-04-30","val":143287,"accn":"0001372167-13-000108","fy":2013,"fp":"FY","form":"10-K/A","filed":"2013-08-15"},{"end":"2012-04-30","val":143287,"accn":"0001372167-14-000002","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-01-03","frame":"CY2012Q1I"},{"end":"2012-07-31","val":143287,"accn":"0001372167-12-000107","fy":2013,"fp":"Q1","form":"10-Q","filed":"2012-09-18","frame":"CY2012Q2I"},{"end":"2013-04-30","val":0,"accn":"0001372167-14-000078","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-03-10","frame":"CY2013Q1I"},{"end":"2014-01-31","val":0,"accn":"0001372167-14-000078","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-03-10","frame":"CY2013Q4I"},{"end":"2014-04-30","val":0,"accn":"0001372167-14-000311","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-11-26"},{"end":"2014-04-30","val":0,"accn":"0001372167-15-000060","fy":2014,"fp":"Q3","form":"10-Q","filed":"2015-03-18"},{"end":"2014-04-30","val":0,"accn":"0001372167-15-000156","fy":2014,"fp":"FY","form":"10-K","filed":"2015-11-12","frame":"CY2014Q1I"},{"end":"2014-10-31","val":0,"accn":"0001372167-14-000311","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-11-26","frame":"CY2014Q3I"},{"end":"2015-01-31","val":0,"accn":"0001372167-15-000060","fy":2014,"fp":"Q3","form":"10-Q","filed":"2015-03-18","frame":"CY2014Q4I"},{"end":"2015-04-30","val":0,"accn":"0001372167-15-000126","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-09-21"},{"end":"2015-04-30","val":0,"accn":"0001372167-15-000156","fy":2014,"fp":"FY","form":"10-K","filed":"2015-11-12"},{"end":"2015-04-30","val":0,"accn":"0001372167-15-000175","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-12-14"},{"end":"2015-04-30","val":0,"accn":"0001372167-16-000209","fy":2015,"fp":"Q3","form":"10-Q","filed":"2016-03-16","frame":"CY2015Q1I"},{"end":"2015-07-31","val":0,"accn":"0001372167-15-000126","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-09-21","frame":"CY2015Q2I"},{"end":"2015-10-31","val":0,"accn":"0001372167-15-000175","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-12-14","frame":"CY2015Q3I"},{"end":"2016-01-31","val":0,"accn":"0001372167-16-000209","fy":2015,"fp":"Q3","form":"10-Q","filed":"2016-03-16","frame":"CY2015Q4I"},{"end":"2016-04-30","val":0,"accn":"0001372167-16-000260","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-10-17"},{"end":"2016-04-30","val":0,"accn":"0001372167-16-000268","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-12-13","frame":"CY2016Q1I"},{"end":"2016-07-31","val":0,"accn":"0001372167-16-000260","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-10-17","frame":"CY2016Q2I"},{"end":"2016-10-31","val":0,"accn":"0001372167-16-000268","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-12-13","frame":"CY2016Q3I"}]}},"AssetsCurrent":{"label":"Assets, 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Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.","units":{"USD":[{"end":"2011-04-30","val":108730,"accn":"0001372167-12-000088","fy":2012,"fp":"FY","form":"10-K/A","filed":"2012-08-14","frame":"CY2011Q1I"},{"end":"2011-04-30","val":108730,"accn":"0001372167-12-000081","fy":2012,"fp":"FY","form":"10-K","filed":"2012-08-14"},{"end":"2012-04-30","val":110410,"accn":"0001372167-14-000002","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-01-03","frame":"CY2012Q1I"},{"end":"2012-04-30","val":110410,"accn":"0001372167-13-000108","fy":2013,"fp":"FY","form":"10-K/A","filed":"2013-08-15"},{"end":"2012-04-30","val":110410,"accn":"0001372167-12-000159","fy":2013,"fp":"Q2","form":"10-Q/A","filed":"2012-12-26"},{"end":"2012-04-30","val":110410,"accn":"0001372167-12-000157","fy":2013,"fp":"Q2","form":"10-Q","filed":"2012-12-26"},{"end":"2012-04-30","val":110410,"accn":"0001372167-12-000107","fy":2013,"fp":"Q1","form":"10-Q","filed":"2012-09-18"},{"end":"2012-04-30","val":110410,"accn":"0001372167-12-000088","fy":2012,"fp":"FY","form":"10-K/A","filed":"2012-08-14"},{"end":"2012-04-30","val":110410,"accn":"0001372167-12-000081","fy":2012,"fp":"FY","form":"10-K","filed":"2012-08-14"},{"end":"2012-07-31","val":110410,"accn":"0001372167-12-000107","fy":2013,"fp":"Q1","form":"10-Q","filed":"2012-09-18","frame":"CY2012Q2I"}]}},"BusinessCombinationAcquisitionRelatedCosts":{"label":"Business Combination, Acquisition Related Costs","description":"This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.","units":{"USD":[{"start":"2002-02-15","end":"2013-10-31","val":250,"accn":"0001372167-13-000163","fy":2014,"fp":"Q2","form":"10-Q","filed":"2013-12-23"},{"start":"2002-02-15","end":"2014-01-31","val":250,"accn":"0001372167-14-000078","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-03-10"}]}},"BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage":{"label":"Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage","description":"Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination.","units":{"pure":[{"end":"2010-02-09","val":99,"accn":"0001372167-13-000039","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-03-25"},{"end":"2010-02-09","val":99,"accn":"0001372167-13-000108","fy":2013,"fp":"FY","form":"10-K/A","filed":"2013-08-15"},{"end":"2010-02-09","val":99,"accn":"0001372167-13-000115","fy":2014,"fp":"Q1","form":"10-Q","filed":"2013-09-23"},{"end":"2010-02-09","val":99,"accn":"0001372167-13-000163","fy":2014,"fp":"Q2","form":"10-Q","filed":"2013-12-23"},{"end":"2010-02-09","val":99,"accn":"0001372167-14-000002","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-01-03"},{"end":"2010-02-09","val":0.99,"accn":"0001372167-14-000165","fy":2014,"fp":"FY","form":"10-K","filed":"2014-08-12","frame":"CY2009Q4I"}]}},"CarryingCostsPropertyAndExplorationRights":{"label":"Carrying Costs, Property and Exploration Rights","description":"The costs incurred to retain exploration and property rights after acquisition but before production has occurred. Costs include legal costs for title defense, ad valorem taxes on nonproducing mineral properties, shut-in royalties, and delay rentals.","units":{"USD":[{"start":"2002-02-15","end":"2014-04-30","val":2500,"accn":"0001372167-14-000165","fy":2014,"fp":"FY","form":"10-K","filed":"2014-08-12"},{"start":"2002-02-15","end":"2014-04-30","val":2500,"accn":"0001372167-15-000134","fy":2013,"fp":"FY","form":"10-K","filed":"2015-10-15"},{"start":"2002-02-15","end":"2014-07-31","val":2500,"accn":"0001372167-14-000189","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-09-11"},{"start":"2002-02-15","end":"2014-10-31","val":2500,"accn":"0001372167-14-000311","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-11-26"},{"start":"2002-02-15","end":"2015-01-31","val":2500,"accn":"0001372167-15-000060","fy":2014,"fp":"Q3","form":"10-Q","filed":"2015-03-18"}]}},"Cash":{"label":"Cash","description":"Amount of currency on hand as well as demand deposits with banks or financial institutions. 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Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.","units":{"USD":[{"end":"2015-07-31","val":133277,"accn":"0001372167-15-000126","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-09-21","frame":"CY2015Q2I"}]}},"LongTermLoansPayable":{"label":"Loans Payable, Noncurrent","description":"Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.","units":{"USD":[{"end":"2010-07-31","val":105000,"accn":"0001372167-11-000039","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2011-10-06","frame":"CY2010Q2I"},{"end":"2011-07-31","val":105000,"accn":"0001372167-11-000039","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2011-10-06","frame":"CY2011Q2I"}]}},"LossOnSaleOfInvestments":{"label":"Loss on Sale of Investments","description":"The difference between the carrying value and the sale price of an investment. 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including affiliates, owners or officers and their immediate families, pension trusts, and so forth. 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