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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Details 3)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Domestic [Member]
Derived revenue Percent	81.20%	81.50%
Foreign [Member]
Derived revenue Percent	18.80%	18.50%

X

- Definition

custom:Derived revenue percent.

+ References

No definition available.

+ Details

Name:	BVX_DerivedRevenuePercent
Namespace Prefix:	BVX_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration