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STOCKHOLDERS' DEFICIT (Stock Option Plans Narrative) (Details) (2005 Stock Option Plan [Member])
12 Months Ended
Dec. 31, 2014
2005 Stock Option Plan [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of shares authorized under the plan 150,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= BGAT_StockOptionPlan2005Member
Options granted 56,635us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_PlanNameAxis
= BGAT_StockOptionPlan2005Member