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STOCK OPTIONS (Details Narrative) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Options Details Narrative
Stock compensation cost recognized	$ 388,000BVX_StockCompensationCostRecognizedDuringPeriod	$ 506,000BVX_StockCompensationCostRecognizedDuringPeriod	$ 161,000BVX_StockCompensationCostRecognizedDuringPeriod
Unrecognized stock-based compensation cost	1,333,086BVX_UnrecognizedStockbasedCompensationCost
Intrinsic value of options exercised	229,135us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	76,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	58,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
Shares of common stock remain to be issued upon exercise of options	290,333us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans
Aggregate intrinsic value of all stock options outstanding and expected to vest	2,265,825us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
Aggregate intrinsic value of currently exercisable stock options	1,101,468us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue
Intrinsic value of closing stock	$ 3.68us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresIntrinsicValue
Number of in-the-money options outstanding and exercisable	819,231BVX_NumberOfInthemoneyOptionsOutstandingAndExercisable
Cash proceeds received from the exercise of stock options	87,475BVX_CashProceedsReceivedFromExerciseOfStockOptions	48,000BVX_CashProceedsReceivedFromExerciseOfStockOptions
Fair value of options granted	1,107,280BVX_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantedInPeriodFairValue1	672,000BVX_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantedInPeriodFairValue1	390,000BVX_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantedInPeriodFairValue1
fair value of option shares vested	412,638us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	637,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	164,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
common shares in issued in exchange for employee and non-employee stock options	73,699us-gaap_StockDividendsShares
Number of employee non-employee stock options	107,000BVX_NumberOfNonemployeeStockOptions
Common shares issued	33,301BVX_CommonSharesIssued
Proceeds from the issuance of common shares	80,475us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock
Unrecognized stock-based compensation	$ 1,333,086us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

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Unrecognized cost of unvested share-based compensation awards.

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Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation.

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Per share weighted average intrinsic value of equity-based compensation awards forfeited. Excludes stock and unit options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Number of shares of common and preferred stock issued as dividends during the period. Excludes stock splits.

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