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Crude Oil and Natural Gas Property Information (Details Textual) (USD $)
6 Months Ended
Mar. 31, 2015
barrels
Mar. 31, 2014
barrels
Jul. 31, 2013
Average Sales Price and Production Costs Per Unit of Production [Line Items]      
Costs paid to Operator by Farmee under Farmout Agreement for Phase 1 SAGD Project $ 21,466,744dwog_CostsPaidByFarmmeeUnderFarmoutAgreement    
Crude Oil and NGL [Member]      
Average Sales Price and Production Costs Per Unit of Production [Line Items]      
Oil revenue after royalties 217,416us-gaap_ResultsOfOperationsSalesRevenueToUnaffiliatedEnterprises
/ us-gaap_AverageSalesPriceAndProductionCostsPerUnitOfProductionProductionTypeAxis
= us-gaap_CrudeOilAndNGLPerBarrelMember
    
Consolidated oil and gas production volumes net 9,536dwog_ConsolidatedOilAndGasProductionVolumesNet
/ us-gaap_AverageSalesPriceAndProductionCostsPerUnitOfProductionProductionTypeAxis
= us-gaap_CrudeOilAndNGLPerBarrelMember
    
Average oil sales price 24.06us-gaap_AverageSalesPrices
/ us-gaap_AverageSalesPriceAndProductionCostsPerUnitOfProductionProductionTypeAxis
= us-gaap_CrudeOilAndNGLPerBarrelMember
   
Average oil sales price description Average oil sales price of $24.06 per barrel (Cdn$28.49 per barrel).    
Production (Operating) expenses       
SAGD [Member]      
Average Sales Price and Production Costs Per Unit of Production [Line Items]      
Estimated Gross Capital Costs for Phase 1 SAGD Project $ 32,800,000dwog_EstimatedGrossCapitalCosts
/ us-gaap_AverageSalesPriceAndProductionCostsPerUnitOfProductionProductionTypeAxis
= dwog_SteamAssistedGravityDrainageDemonstrationProjectMember
   
Description and Terms of Farmout Agreement 100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_AverageSalesPriceAndProductionCostsPerUnitOfProductionProductionTypeAxis
= dwog_SteamAssistedGravityDrainageDemonstrationProjectMember
  25.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_AverageSalesPriceAndProductionCostsPerUnitOfProductionProductionTypeAxis
= dwog_SteamAssistedGravityDrainageDemonstrationProjectMember