General form of registration statement for all companies including face-amount certificate companies

Consolidated Statement of Changes in Shareholders' (Deficit)

v2.4.1.9
Consolidated Statement of Changes in Shareholders' (Deficit) (USD $)
Total
Accrued Interest
Bonus Share
Conversion Features one
Conversion Features two
Conversion Features three
Conversion Features Four
Conversion Features Five
Exercise Price 1
Exercise Price 2
Exercise Price 3
Issuance During Period 1st
Issuance During Period 2nd
Issuance During Period 3rd
Issuance During Period 4th
Preferred Stock
Common Stock
Common Stock
Accrued Interest
Common Stock
Bonus Share
Common Stock
Conversion Features one
Common Stock
Conversion Features two
Common Stock
Conversion Features three
Common Stock
Conversion Features Four
Common Stock
Conversion Features Five
Common Stock
Exercise Price 1
Common Stock
Exercise Price 2
Common Stock
Exercise Price 3
Common Stock
Issuance During Period 1st
Common Stock
Issuance During Period 2nd
Common Stock
Issuance During Period 3rd
Common Stock
Issuance During Period 4th
Common Stock Payable
Common Stock Payable
Accrued Interest
Common Stock Payable
Bonus Share
Additional Paid-in Capital
Rescission Amount
Stock for Prepaid Services
Accumulated Deficit
Beginning balance at May. 31, 2012 $ (3,973,434)us-gaap_StockholdersEquity                             $ 451,993us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
$ 15,050,261us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                            $ 388,000us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= cydy_CommonStockPayableMember
    $ 8,319,830us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (3,749,000)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= cydy_SubjectToRecessionMember
  $ (24,434,518)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
Beginning balance, shares at May. 31, 2012                               98,900us-gaap_SharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
28,746,672us-gaap_SharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                         
Rescission expirations and exclusions 3,212,500cydy_RescissionExpirationsAndExclusions                                                                     3,212,500cydy_RescissionExpirationsAndExclusions
/ us-gaap_StatementEquityComponentsAxis
= cydy_SubjectToRecessionMember
   
Amortization of deferred offering costs related to rescission liability (580,392)cydy_AmortizationOfDeferredOfferingCostRelatedToRescissionLiability                             (158,902)cydy_AmortizationOfDeferredOfferingCostRelatedToRescissionLiability
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
(377,258)cydy_AmortizationOfDeferredOfferingCostRelatedToRescissionLiability
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                  (44,232)cydy_AmortizationOfDeferredOfferingCostRelatedToRescissionLiability
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
     
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, shares                               (3,800)us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
38,000us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
    756,000us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesOneMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
5,604us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesTwoMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                 
Common shares issued to extinguish promissory notes payable, convertible debt and related interest                               (19,000)us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
19,000us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                         
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, value 567,000us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities     567,000us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesOneMember
4,203us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesTwoMember
                            567,000us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesOneMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
4,203us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesTwoMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                 
Series B Convertible Preferred Stock Dividends, shares                                 4,380us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                         
Series B Convertible Preferred Stock Dividends, value                                 2,190us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                  (2,190)us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
     
Common Stock issued related to legal settlement                                 388,000cydy_StockIssuedDuringPeriodValueIssuedRelatedToLegalSettlement
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                            (388,000)cydy_StockIssuedDuringPeriodValueIssuedRelatedToLegalSettlement
/ us-gaap_StatementEquityComponentsAxis
= cydy_CommonStockPayableMember
           
Exercise of Common Stock warrants, shares                                                 750,000cydy_StockIssuedDuringPeriodShareWarrantExercised
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= cydy_ExercisePriceOneMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
5,000cydy_StockIssuedDuringPeriodShareWarrantExercised
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= cydy_ExercisePriceTwoMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                       
Common Stock issued related to legal settlement, shares                                 400,000cydy_StockIssuedDuringPeriodSharesIssuedRelatedToLegalSettlement
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                         
Exercise of Common Stock warrants, Value                 187,500cydy_StockIssuedDuringPeriodValueWarrantExercised
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= cydy_ExercisePriceOneMember
5,000cydy_StockIssuedDuringPeriodValueWarrantExercised
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= cydy_ExercisePriceTwoMember
                            187,500cydy_StockIssuedDuringPeriodValueWarrantExercised
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= cydy_ExercisePriceOneMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
5,000cydy_StockIssuedDuringPeriodValueWarrantExercised
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= cydy_ExercisePriceTwoMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                       
Common Stock issued for services to consultants, shares                                 60,000cydy_StockIssuedDuringPeriodSharesIssuedForServicesToConsultants
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                         
Common Stock issued for services to consultants, value                                 160,800cydy_StockIssuedDuringPeriodValueIssuedForServicesToConsultants
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                      (160,800)cydy_StockIssuedDuringPeriodValueIssuedForServicesToConsultants
/ us-gaap_StatementEquityComponentsAxis
= cydy_StockForPrepaidServicesMember
 
Common stock issuable, value   10,278cydy_StockIssuableValue
/ cydy_IssuanceOfCommonStockAxis
= cydy_AccruedInterestMember
107,500cydy_StockIssuableValue
/ cydy_IssuanceOfCommonStockAxis
= cydy_BonusShareMember
                                                          10,278cydy_StockIssuableValue
/ cydy_IssuanceOfCommonStockAxis
= cydy_AccruedInterestMember
/ us-gaap_StatementEquityComponentsAxis
= cydy_CommonStockPayableMember
107,500cydy_StockIssuableValue
/ cydy_IssuanceOfCommonStockAxis
= cydy_BonusShareMember
/ us-gaap_StatementEquityComponentsAxis
= cydy_CommonStockPayableMember
       
Amortization of prepaid stock services 160,800cydy_AmortizationOfPrepaidStockServices                                                                       160,800cydy_AmortizationOfPrepaidStockServices
/ us-gaap_StatementEquityComponentsAxis
= cydy_StockForPrepaidServicesMember
 
Common Stock issued for services to directors, shares                                                       7,810cydy_StockIssuedDuringPeriodSharesIssuedForServicesToDirectors
/ cydy_PeriodAxis
= cydy_IssuanceDuringPeriodOneMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
16,230cydy_StockIssuedDuringPeriodSharesIssuedForServicesToDirectors
/ cydy_PeriodAxis
= cydy_IssuanceDuringPeriodTwoMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
12,500cydy_StockIssuedDuringPeriodSharesIssuedForServicesToDirectors
/ cydy_PeriodAxis
= cydy_IssuanceDuringPeriodThreeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
14,980cydy_StockIssuedDuringPeriodSharesIssuedForServicesToDirectors
/ cydy_PeriodAxis
= cydy_IssuanceDuringPeriodFourMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
             
Common Stock issued for services to directors, Value                       12,496cydy_StockIssuedDuringPeriodValueIssuedForServicesToDirectors
/ cydy_PeriodAxis
= cydy_IssuanceDuringPeriodOneMember
12,497cydy_StockIssuedDuringPeriodValueIssuedForServicesToDirectors
/ cydy_PeriodAxis
= cydy_IssuanceDuringPeriodTwoMember
12,500cydy_StockIssuedDuringPeriodValueIssuedForServicesToDirectors
/ cydy_PeriodAxis
= cydy_IssuanceDuringPeriodThreeMember
11,984cydy_StockIssuedDuringPeriodValueIssuedForServicesToDirectors
/ cydy_PeriodAxis
= cydy_IssuanceDuringPeriodFourMember
                        12,496cydy_StockIssuedDuringPeriodValueIssuedForServicesToDirectors
/ cydy_PeriodAxis
= cydy_IssuanceDuringPeriodOneMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
12,497cydy_StockIssuedDuringPeriodValueIssuedForServicesToDirectors
/ cydy_PeriodAxis
= cydy_IssuanceDuringPeriodTwoMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
12,500cydy_StockIssuedDuringPeriodValueIssuedForServicesToDirectors
/ cydy_PeriodAxis
= cydy_IssuanceDuringPeriodThreeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
11,984cydy_StockIssuedDuringPeriodValueIssuedForServicesToDirectors
/ cydy_PeriodAxis
= cydy_IssuanceDuringPeriodFourMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
             
Exercise of Common Stock options, shares                                                     25,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= cydy_ExercisePriceThreeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                     
Exercise of Common Stock options, Value                     8,500us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= cydy_ExercisePriceThreeMember
                              8,500us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= cydy_ExercisePriceThreeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                     
Stock issued in payment of accounts payable, shares                                 66,116cydy_StockIssuedDuringPeriodSharesIssuedInPaymentOfAccountsPayable
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                         
Issuance of common stock for accounts payable, value 80,000cydy_StockIssuedDuringPeriodValueIssuedInPaymentOfAccountsPayable                               80,000cydy_StockIssuedDuringPeriodValueIssuedInPaymentOfAccountsPayable
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                         
Stock-based compensation 3,261,951us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue                                                                   3,261,951us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
     
Debt discount related to warrants and beneficial conversion feature associated with convertible debt 6,243,502us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature                                                                   6,243,502us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
     
Net loss at year ended (9,568,301)us-gaap_NetIncomeLoss                                                                         (9,568,301)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
Ending Balance at May. 31, 2013 (223,916)us-gaap_StockholdersEquity                             274,091us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
16,144,673us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                            117,778us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= cydy_CommonStockPayableMember
    17,778,861us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(536,500)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= cydy_SubjectToRecessionMember
  (34,002,819)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
Ending balance, shares at May. 31, 2013                               95,100us-gaap_SharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
30,908,292us-gaap_SharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                         
Rescission expirations and exclusions 158,500cydy_RescissionExpirationsAndExclusions                                                                     158,500cydy_RescissionExpirationsAndExclusions
/ us-gaap_StatementEquityComponentsAxis
= cydy_SubjectToRecessionMember
   
Amortization of deferred offering costs related to rescission liability (28,636)cydy_AmortizationOfDeferredOfferingCostRelatedToRescissionLiability                             (7,840)cydy_AmortizationOfDeferredOfferingCostRelatedToRescissionLiability
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
(20,796)cydy_AmortizationOfDeferredOfferingCostRelatedToRescissionLiability
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                         
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, shares                                       2,046,148us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesOneMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
1,493,333us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesTwoMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
24,363us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesThreeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
16,117us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesFourMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
21,963us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesFiveMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                           
Proceeds from unit offering, shares                                 20,989,494cydy_IssuanceOfCommonStockInPrivateStockOfferingShare
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                         
Common shares issued to extinguish promissory notes payable, convertible debt and related interest, value 2,459,000us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities     1,330,000us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesOneMember
1,120,000us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesTwoMember
15,837us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesThreeMember
12,088us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesFourMember
10,012us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesFiveMember
                      1,330,000us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesOneMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
1,120,000us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesTwoMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
15,837us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesThreeMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
12,088us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesFourMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
10,012us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ cydy_ConversionFeaturesAxis
= cydy_ConversionFeaturesFiveMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                           
Proceeds from unit offering 13,642,667cydy_IssuanceOfCommonStockInPrivateStockOfferingValue                               13,642,667cydy_IssuanceOfCommonStockInPrivateStockOfferingValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                         
Deferred offering costs (2,084,063)us-gaap_PaymentsOfFinancingCosts                               (2,084,063)us-gaap_PaymentsOfFinancingCosts
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                         
Inducement warrants 193,160us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued                                                                   193,160us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
     
Exercise of Common Stock warrants, shares                                 50,000cydy_StockIssuedDuringPeriodShareWarrantExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                         
Exercise of Common Stock warrants, Value 50,000cydy_StockIssuedDuringPeriodValueWarrantExercised                               50,000cydy_StockIssuedDuringPeriodValueWarrantExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                         
Common stock issuable, share                                   150,000cydy_StockIssuableShares
/ cydy_IssuanceOfCommonStockAxis
= cydy_AccruedInterestMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
53,601cydy_StockIssuableShares
/ cydy_IssuanceOfCommonStockAxis
= cydy_BonusShareMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                     
Common stock issuable, value   64,722cydy_StockIssuableValue
/ cydy_IssuanceOfCommonStockAxis
= cydy_AccruedInterestMember
35,139cydy_StockIssuableValue
/ cydy_IssuanceOfCommonStockAxis
= cydy_BonusShareMember
                            75,000cydy_StockIssuableValue
/ cydy_IssuanceOfCommonStockAxis
= cydy_AccruedInterestMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
72,361cydy_StockIssuableValue
/ cydy_IssuanceOfCommonStockAxis
= cydy_BonusShareMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                          (10,278)cydy_StockIssuableValue
/ cydy_IssuanceOfCommonStockAxis
= cydy_AccruedInterestMember
/ us-gaap_StatementEquityComponentsAxis
= cydy_CommonStockPayableMember
(107,500)cydy_StockIssuableValue
/ cydy_IssuanceOfCommonStockAxis
= cydy_BonusShareMember
/ us-gaap_StatementEquityComponentsAxis
= cydy_CommonStockPayableMember
       
Stock-based compensation 928,413us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue                                                                   928,413us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
     
Debt discount related to warrants and beneficial conversion feature associated with convertible debt 1,200,000us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature                                                                   1,200,000us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
     
Net loss at year ended (12,431,413)us-gaap_NetIncomeLoss                                                                         (12,431,413)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
Ending Balance at May. 31, 2014 $ 3,922,232us-gaap_StockholdersEquity                             $ 266,251us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
$ 30,367,779us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
                                  $ 20,100,434us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (378,000)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= cydy_SubjectToRecessionMember
  $ (46,434,232)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
Ending balance, shares at May. 31, 2014                               95,100us-gaap_SharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
55,753,311us-gaap_SharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember