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Oil and Gas Properties (Details Textual)
 1 Months Ended 6 Months Ended 6 Months Ended 1 Months Ended 6 Months Ended
Sep. 25, 2014
Mar. 31, 2015
oil
acre
Wells
Sep. 30, 2014
Wells
Mar. 31, 2015
Minimum [Member]
acre
Mar. 31, 2014
Maximum [Member]
acre
Mar. 31, 2015
Land One [Member]
oil
Mar. 31, 2015
Land Two [Member]
oil
Mar. 31, 2015
Land Three [Member]
oil
Jul. 31, 2013
Farmout Agreement [Member]
USD ($)
Nov. 17, 2014
Farmout Agreement [Member]
USD ($)
Mar. 31, 2015
Northern Alberta Oil Ltd [Member]
Mar. 31, 2015
JV Partner [Member]
USD ($)
Mar. 31, 2015
JV Partner [Member]
CAD
Mar. 31, 2015
Mr. Malik Youyou [Member]
USD ($)
Oil and Gas Properties (Textual)                            
Gas and oil area, gross   43,015dwog_GasAndOilAreaGross                        
Gas and oil area, net   34,096dwog_GasAndOilAreaNet   33,463dwog_GasAndOilAreaNet
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		 34,096dwog_GasAndOilAreaNet
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		                  
Lease agreements, expiration date           Jul. 10, 2018 Aug. 19, 2019 Apr. 09, 2024            
Number of oil and gas for leases   9dwog_NumberOfOilSandsForLeases       5dwog_NumberOfOilSandsForLeases
/ us-gaap_StatementScenarioAxis
= dwog_LandOneMember		 3dwog_NumberOfOilSandsForLeases
/ us-gaap_StatementScenarioAxis
= dwog_LandTwoMember		 1dwog_NumberOfOilSandsForLeases
/ us-gaap_StatementScenarioAxis
= dwog_LandThreeMember		            
Description and Terms of Farmout Agreement                 On July 31, 2013, the Company entered into a Farmout agreement (the "Farmout Agreement) with an additional joint venture partner (the "Farmee") to fund the Company's share of the AER approved SAGD Project at the Company's Sawn Lake heavy oil reservoir in North Central Alberta, Canada. In accordance with the Farmout Agreement the Farmee has agreed to provide up to $40,000,000 in funding for the Company's portion of the costs for the SAGD Project, in return for a net 25% working interest in 12 sections where the Company had a working interest of 50% (before the execution of the Farmout Agreement).          
Description for term of capital lease   If the Company meets the conditions of the leases the Company will then be permitted to drill on and produce oil from the land into perpetuity. These conditions give the Company until the expiration of the leases to meet the following requirements on its primary oil sands leases: 1. drill 68 wells throughout the 68 sections; or 2. drill 44 wells within the 68 sections and having acquired and processed 2 miles of seismic on each other undrilled section.                        
Number of wells company has interest in   10dwog_NumberOfWellsCompanyHasInterestIn 10dwog_NumberOfWellsCompanyHasInterestIn                      
Potential option under Farmout Agreement for additional funding                   $ 110,000,000dwog_PotentialOptionForFundingUnderFarmoutAgreement
/ us-gaap_FinancialInstrumentAxis
= dwog_FarmoutAgreementMember		        
Potential option under Farmout Agreement for additional funding description                
In addition, until December 31, 2015, as amended on November 17, 2014, the Farmee has the option to elect to obtain a working interest of 45% to 50% working interest in the remaining 56 sections of land where the Company has working interests ranging from 90% to 100%, by committing an additional $110,000,000 of financing to the development of the Company’s Sawn Lake oil sands properties.
          
Miles of seismic acquired on leases   25 miles of seismic.                        
Funding for project under agreement                 40,000,000dwog_FundingUnderFarmoutAgreement
/ us-gaap_FinancialInstrumentAxis
= dwog_FarmoutAgreementMember		          
Monthly maximum payable by Farmee for operating expense                 30,000dwog_MaximumAmountPayableFromFarmeeForOperatingExpenses
/ us-gaap_FinancialInstrumentAxis
= dwog_FarmoutAgreementMember		          
Percentage of ownership interest                     100.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionAxis
= dwog_NorthernAlbertaOilLtdMember		      
Acquisition of purported gross overriding royalty from non-related party                       2,435,124dwog_PaymentToNonRelatedPartyForPurchaseRoyalty
/ us-gaap_RelatedPartyTransactionAxis
= dwog_JvPartnerMember		 2,697,600dwog_PaymentToNonRelatedPartyForPurchaseRoyalty
/ us-gaap_RelatedPartyTransactionAxis
= dwog_JvPartnerMember		  
Acquisition of purported gross overriding royalty from related party                           $ 1,007,000dwog_PaymentToRelatedPartyForPurchaseRoyalty
/ us-gaap_RelatedPartyTransactionAxis
= dwog_Mr.MalikYouyouMember
Purported gross overriding royalty percentage                     6.50%dwog_PercentageOfGrossOverridingRoyalty
/ us-gaap_RelatedPartyTransactionAxis
= dwog_NorthernAlbertaOilLtdMember		 3.00%dwog_PercentageOfGrossOverridingRoyalty
/ us-gaap_RelatedPartyTransactionAxis
= dwog_JvPartnerMember		 3.00%dwog_PercentageOfGrossOverridingRoyalty
/ us-gaap_RelatedPartyTransactionAxis
= dwog_JvPartnerMember		 2.50%dwog_PercentageOfGrossOverridingRoyalty
/ us-gaap_RelatedPartyTransactionAxis
= dwog_Mr.MalikYouyouMember
Description of purchase and sale agreement
Effective September 25, 2014, the Company, through its subsidiary Deep Well Alberta, entered into a Purchase and Sale agreement with Classic Energy Inc. (“Classic”), pursuant to which the Company acquired Classic’s 20% working interest in five sections in one Sawn Lake oil sands lease where the Company already owned working interests. As of September 25, 2014, the Company increased its net acres in the Sawn Lake oil sands properties from 33,463 to 34,096 net acres.