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SUBSEQUENT EVENTS (Details) (USD $)
1 Months Ended 12 Months Ended 0 Months Ended
Mar. 31, 2015
Jul. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Jun. 12, 2015
Sep. 30, 2016
Jun. 09, 2015
Jun. 02, 2015
item
Dec. 04, 2014
Nov. 20, 2014
Apr. 08, 2013
Apr. 30, 2015
May 31, 2015
Subsequent Event [Line Items]                          
Face value of underlying policies $ 94,000,000sund_LifeSettlementContractsInvestmentMethodFaceValueHeldAsCollateral   $ 94,000,000sund_LifeSettlementContractsInvestmentMethodFaceValueHeldAsCollateral                    
Face value of loan                 150,000us-gaap_NotesAndLoansReceivableGrossCurrent        
Interest rate 4.00%us-gaap_DebtInstrumentInterestRateStatedPercentage   4.00%us-gaap_DebtInstrumentInterestRateStatedPercentage                    
Shares of common stock issued 1,130,000us-gaap_StockIssuedDuringPeriodSharesNewIssues 30,000us-gaap_StockIssuedDuringPeriodSharesNewIssues   2,218,500us-gaap_StockIssuedDuringPeriodSharesNewIssues                  
Number of shares repurchased during the period 187,500us-gaap_StockRepurchasedDuringPeriodShares                        
Notes payable-related party loan 1,500,000us-gaap_NotesPayableRelatedPartiesClassifiedCurrent   1,500,000us-gaap_NotesPayableRelatedPartiesClassifiedCurrent 90,000us-gaap_NotesPayableRelatedPartiesClassifiedCurrent           1,362,000us-gaap_NotesPayableRelatedPartiesClassifiedCurrent      
Maturity date     Apr. 01, 2015                    
Shares of common stock issuable under warrants 70,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights   70,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights 70,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights             70,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights    
Subsequent Event [Member]                          
Subsequent Event [Line Items]                          
Face amount of net insurance benefits remaining required amount to be delivered to the company per the asset transfer agreement                       309,400,000sund_ValueOfNetInsuranceBenefitsRemainingRequiredAmountToBeDeliveredPerAssetTransferAgreement
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
 
Maximum amount borrowed under line of credit         600,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Notes payable-related party loan         1,500,000us-gaap_NotesPayableRelatedPartiesClassifiedCurrent
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
               
Maturity date         Sep. 30, 2016                
Subsequent Event [Member] | HFII [Member]                          
Subsequent Event [Line Items]                          
Shares of common stock issued             1,130,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ dei_LegalEntityAxis
= sund_HFIISolutionsLLCMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
           
Number of shares repurchased during the period             187,500us-gaap_StockRepurchasedDuringPeriodShares
/ dei_LegalEntityAxis
= sund_HFIISolutionsLLCMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
           
Number of shares retired during the period             93,750us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
/ dei_LegalEntityAxis
= sund_HFIISolutionsLLCMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
           
Amount of shares retired during the period             750,000us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
/ dei_LegalEntityAxis
= sund_HFIISolutionsLLCMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
           
Number of shares eligible for redemption           93,750sund_StockRepurchasedAndToBeEligibleForRetirementDuringPeriodShares
/ dei_LegalEntityAxis
= sund_HFIISolutionsLLCMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Subsequent Event [Member] | 8% Convertible debenture [Member]                          
Subsequent Event [Line Items]                          
Interest rate               8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ConvertibleDebtSecuritiesMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
         
Conversion percentage of debt into shares               90.00%us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ConvertibleDebtSecuritiesMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
         
Number of days for conversion of debt into shares               90us-gaap_DebtInstrumentConvertibleThresholdTradingDays
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ConvertibleDebtSecuritiesMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
         
Amount of debt converted into shares               700,000us-gaap_DebtInstrumentConvertibleBeneficialConversionFeature
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ConvertibleDebtSecuritiesMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
         
Subsequent Event [Member] | 8% Convertible debenture [Member] | Maximum [Member]                          
Subsequent Event [Line Items]                          
Amount borrowed               $ 3,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_ConvertibleDebtSecuritiesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
         
Subsequent Event [Member] | Warrant [Member]                          
Subsequent Event [Line Items]                          
Shares of common stock issuable under warrants                         70,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_WarrantMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember