XML 28 R44.htm IDEA: XBRL DOCUMENT
v2.4.0.6

RETIREMENT PLAN (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
RETIREMENT PLAN [Abstract] |  |  |
Period after date of hire employees are fully vested | 3 years |  |
Percentage of vesting after three years from date of hire (in hundredths) | 100.00% |  |
Percentage of matching contributions up to 3% of participant payroll (in hundredths) | 50.00% |  |
Maximum percentage of participant payroll for which employer makes matching contribution (in hundredths) | 3.00% |  |
Contributions and expense under the plan | $ 0 | $ 0 | $ 0

X
- Definition Percentage of employees' gross pay deductions for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | bvx_DefinedContributionPlanEmployerMatchingContributionPercentOfPay
Namespace Prefix: | bvx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Refers to period after date of hire employees are fully vested under retirement plan. + References No definition available. + Details
Name: | bvx_PeriodAfterDateOfHireEmployeesAreFullyVested
Namespace Prefix: | bvx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 11 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of employer's matching contributions to a defined contribution plan that vests in a given year. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration