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9. EMPLOYEE AND DIRECTOR EQUITY INCENTIVE PLANS (Details 4) (USD $)
9 Months Ended 12 Months Ended
Mar. 31, 2015
Jun. 30, 2014
Outstanding Number of Options, Ending balance 1,664,778us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber  
Outstanding, ending, Weighted-Average Exercise Price $ 2.61us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice  
Number of Restricted Stock Units    
Outstanding Number of Options, Beginning balance 1,346,813us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
1,131,687us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
Granted 922,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
1,660,696us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
Forfeited 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
(1,200,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
Shares issued (201,819)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
(245,570)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
Outstanding Number of Options, Ending balance 2,067,494us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
1,346,813us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
Outstanding, ending, Weighted-Average Exercise Price $ 1.87us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
$ 2.30us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
Granted $ 1.05us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
$ 0.99us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
Forfeited $ 0.00us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
$ 1.10us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
Shares issued $ 0.81ZBB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageSharesIssued
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
$ 1.61ZBB_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageSharesIssued
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
Outstanding, ending, Weighted-Average Exercise Price $ 1.34us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember
$ 1.87us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_ClassOfWarrantOrRightAxis
= ZBB_NumberOfRestrictedStockUnitsMember