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Summary of Accounting Policies and Nature of Operations (Details) (USD $)
12 Months Ended 3 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Jun. 30, 2014
Property, Plant and Equipment [Line Items]      
Advertising costs $ 2,276,603us-gaap_AdvertisingExpense $ 2,071,577us-gaap_AdvertisingExpense  
Allowance for doubtful accounts 12,772us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent 10,553us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent  
Layaway plan, percent of sale price 25.00%dgse_LayawayPlanPercentOfSalesPriceCollected    
Sales returns and allowances 29,814us-gaap_SalesReturnsAndAllowancesGoods 55,124us-gaap_SalesReturnsAndAllowancesGoods  
Shipping and handling costs 91,103us-gaap_ShippingHandlingAndTransportationCosts 141,883us-gaap_ShippingHandlingAndTransportationCosts  
Stock-based compensation expense 148,500us-gaap_ShareBasedCompensation     
Southern Bullion Trading LLC [Member]      
Business Acquisition [Line Items]      
Intangible assets 3,400,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= dgse_SouthernBullionTradingLlcMember
   
Southern Bullion Trading LLC [Member] | Trade Names [Member]      
Business Acquisition [Line Items]      
Life of intangible asset 15 years    
Loss on writedown of operating assets     $ 2,900,000us-gaap_DisposalGroupNotDiscontinuedOperationLossGainOnWriteDown
/ us-gaap_BusinessAcquisitionAxis
= dgse_SouthernBullionTradingLlcMember
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_TradeNamesMember
Minimum [Member]      
Property, Plant and Equipment [Line Items]      
Property and equipment, estimated useful life 5 years    
Maximum [Member]      
Property, Plant and Equipment [Line Items]      
Property and equipment, estimated useful life 10 years