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Stockholders' Deficit (Warrants - Outstanding and Exercisable Warrants) (Details) (USD $)
 6 Months Ended
Dec. 31, 2014
Jun. 30, 2014
Warrants outstanding at December 31, 2014 68,259,843us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber 63,066,514us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Warrants outstanding, Weighted-average remaining life, in years 6 years 95 days  
Warrants exercisable, at December 31, 2014 67,801,510CVAT_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumber  
$0.04 - 0.07    
Range of Exercise Price, Minimum 0.04CVAT_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisePriceRangeLowerRangeLimit
/ us-gaap_AwardTypeAxis
= CVAT_WarrantPriceOneMember		  
Range of Exercise Price, Maximum 0.07CVAT_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisePriceRangeUpperRangeLimit
/ us-gaap_AwardTypeAxis
= CVAT_WarrantPriceOneMember		  
Warrants outstanding at December 31, 2014 47,933,184us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= CVAT_WarrantPriceOneMember		  
Warrants outstanding, Weighted-average remaining life, in years 7 years 91 days  
Warrants outstanding, Weighted-average exercise price 0.05CVAT_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= CVAT_WarrantPriceOneMember		  
Warrants exercisable, at December 31, 2014 47,474,851CVAT_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= CVAT_WarrantPriceOneMember		  
Warrants exercisable, Weighted-average exercise price 0.05CVAT_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= CVAT_WarrantPriceOneMember		  
$0.12    
Range of Exercise Price, Minimum 0.12CVAT_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisePriceRangeLowerRangeLimit
/ us-gaap_AwardTypeAxis
= CVAT_ZeroPointOneTwoMember		  
Range of Exercise Price, Maximum 0.12CVAT_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisePriceRangeUpperRangeLimit
/ us-gaap_AwardTypeAxis
= CVAT_ZeroPointOneTwoMember		  
Warrants outstanding at December 31, 2014 20,326,659us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= CVAT_ZeroPointOneTwoMember		  
Warrants outstanding, Weighted-average remaining life, in years 4 years 274 days  
Warrants outstanding, Weighted-average exercise price 0.12CVAT_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= CVAT_ZeroPointOneTwoMember		  
Warrants exercisable, at December 31, 2014 20,326,659CVAT_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumber
/ us-gaap_AwardTypeAxis
= CVAT_ZeroPointOneTwoMember		  
Warrants exercisable, Weighted-average exercise price 0.12CVAT_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_AwardTypeAxis
= CVAT_ZeroPointOneTwoMember