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INCOME TAXES (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
INCOME TAXES [Abstract]    
Unrecognized tax benefits, interest and penalties $ 0us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense $ 0us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Unrecognized tax benefits 0us-gaap_UnrecognizedTaxBenefits 0us-gaap_UnrecognizedTaxBenefits
Period for which the position in unrecognized tax benefit is not expected to change 12 months  
Current [Abstract]    
Federal 0us-gaap_CurrentFederalTaxExpenseBenefit 0us-gaap_CurrentFederalTaxExpenseBenefit
State and other 11,000us-gaap_CurrentStateAndLocalTaxExpenseBenefit 22,000us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Total Current 11,000us-gaap_CurrentIncomeTaxExpenseBenefit 22,000us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred [Abstract]    
Federal (2,000)us-gaap_DeferredFederalIncomeTaxExpenseBenefit (15,000)us-gaap_DeferredFederalIncomeTaxExpenseBenefit
State and other (1,000)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit (3,000)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
Total Deferred (3,000)us-gaap_DeferredIncomeTaxExpenseBenefit (18,000)us-gaap_DeferredIncomeTaxExpenseBenefit
Provision for Income Taxes 8,000us-gaap_IncomeTaxExpenseBenefit 4,000us-gaap_IncomeTaxExpenseBenefit
Significant difference between U.S. Federal statutory tax rate and effective tax rate for financial statement [Abstract]    
U.S. Federal Statutory Tax Rate (in hundredths) 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Permanent items (in hundredths) 14.00%diri_EffectiveIncomeTaxRateReconciliationPermanentItems 13.00%diri_EffectiveIncomeTaxRateReconciliationPermanentItems
State taxes (in hundredths) 4.00%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 5.00%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Other (in hundredths) (1.00%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Decrease in valuation allowance (in hundredths) (44.00%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance (50.00%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Totals (in hundredths) 7.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations 2.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations
Deferred Tax Assets [Abstract]    
Net operating loss carryforwards 9,583,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards 9,670,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Tax credit carryforwards 347,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards 347,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards
Fixed and intangible assets (17,000)diri_DeferredTaxAssetsFixedAndIntangibleAssets 43,000diri_DeferredTaxAssetsFixedAndIntangibleAssets
Deferred revenue 20,000us-gaap_DeferredTaxAssetsDeferredIncome 0us-gaap_DeferredTaxAssetsDeferredIncome
Value of stock options and stock compensation 380,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost 338,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Deferred rent 17,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent 9,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent
Capital loss carryforward 517,000us-gaap_DeferredTaxAssetsCapitalLossCarryforwards 517,000us-gaap_DeferredTaxAssetsCapitalLossCarryforwards
Accruals 172,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities 142,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
Deferred Tax Assets, Gross 11,019,000us-gaap_DeferredTaxAssetsGross 11,066,000us-gaap_DeferredTaxAssetsGross
Valuation Allowance (9,824,000)us-gaap_DeferredTaxAssetsValuationAllowance (9,874,000)us-gaap_DeferredTaxAssetsValuationAllowance
Deferred Tax Assets, Net 1,195,000us-gaap_DeferredTaxAssetsLiabilitiesNet 1,192,000us-gaap_DeferredTaxAssetsLiabilitiesNet
Change in valuation allowance for deferred tax assets [Abstract]    
Beginning Balance 9,874,000us-gaap_DeferredTaxAssetsValuationAllowance 9,957,000us-gaap_DeferredTaxAssetsValuationAllowance
Change in Allowance (50,000)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount (83,000)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Ending Balance 9,824,000us-gaap_DeferredTaxAssetsValuationAllowance 9,874,000us-gaap_DeferredTaxAssetsValuationAllowance
Operating Loss Carryforwards [Line Items]    
Amount of federal net operating loss expired 0diri_AmountOfFederalNetOperatingLossExpired 0diri_AmountOfFederalNetOperatingLossExpired
Net operating loss carryforwards related to tax benefit 1,193,000diri_NetOperatingLossCarryforwardsRelatedToTaxBenefit  
Minimum [Member]    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards, expiration dates Dec. 31, 2019  
Maximum [Member]    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards, expiration dates Dec. 31, 2034  
Federal Tax Authority [Member]    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards 25,000,000us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_DomesticCountryMember		  
State Tax Authority [Member]    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards $ 20,000,000us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_StateAndLocalJurisdictionMember