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NATURE OF BUSINESS (Details)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Concentration Risk [Line Items]    
Number of major customers 2diri_ConcentrationRiskNumberOfMajorCustomers  
Revenues [Member]    
Concentration Risk [Line Items]    
Ratio of revenues from major customers to total revenues (in hundredths) 100.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
100.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
Revenues [Member] | Customers One [Member]    
Concentration Risk [Line Items]    
Ratio of revenues from major customers to total revenues (in hundredths) 71.30%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_MajorCustomersAxis
= diri_CustomersOneMember
72.20%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_MajorCustomersAxis
= diri_CustomersOneMember