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9. EMPLOYEE/DIRECTOR EQUITY INCENTIVE PLANS (Details 1) (USD $)
6 Months Ended 12 Months Ended
Dec. 31, 2014
Jun. 30, 2014
Outstanding Number of Options, Ending balance 1,681,133us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber  
Outstanding, ending, Weighted-Average Exercise Price $ 2.6us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice  
Average Remaining Contractual Life of Outstanding Options   6 years 2 months 8 days
Employee and Director Plans    
Outstanding Number of Options, Beginning balance 1,419,068us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
785,284us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
Options granted 418,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
699,850us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
Options forfeited (155,935)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
(66,066)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
Outstanding Number of Options, Ending balance 1,681,133us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
1,419,068us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
Outstanding, ending, Weighted-Average Exercise Price $ 3.23us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
$ 5.78us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
Options granted $ 0.85us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
$ 1.33us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
Options forfeited $ 3.64us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
$ 13.23us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
Outstanding, ending, Weighted-Average Exercise Price $ 2.6us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
$ 3.23us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_PlanNameAxis
= ZBB_EmployeeAndDirectorPlansMember
Average Remaining Contractual Life of Outstanding Options 6 years 2 months 8 days 6 years 1 month 2 days