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ACCRUED LIABILITIES TO RELATED PARTIES (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Total $ 18,000us-gaap_OtherAccruedLiabilitiesCurrent $ 749,600us-gaap_OtherAccruedLiabilitiesCurrent
SAIC [Member]    
Accrued interest    705,681us-gaap_InterestPayableCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= BGAT_SAICMember
CEO - Sperco [Member]    
Accrued vehicle allowance    6,000BGAT_AccruedVehicleAllowance
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= BGAT_CEOMember
Former Member of Board of Directors [Member]    
Accrued fees    20,419BGAT_AccruedFeesRelatedToDirectorDuties
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= BGAT_FormerBoardOfDirectorMember
Member of Board of Directors [Member]    
Accrued fees    17,500BGAT_AccruedFeesRelatedToDirectorDuties
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= BGAT_BoardOfDirectorMember
Ang Woon Han [Member]    
Accrued fees $ 18,000BGAT_AccruedFeesRelatedToDirectorDuties
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= BGAT_AngWoonHanMember