XML 42 R46.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Property and Equipment - Additional Information (Detail) (Property and equipment [Member], USD $) In Millions, unless otherwise specified | Mar. 30, 2013 | Mar. 31, 2012
--- | --- | ---
Property and equipment [Member] |  |
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items] |  |
Property and plant under capital lease arrangement, cost | $ 13.7 | $ 19.5
Property and plant under capital lease arrangement, net book value | $ 8.1 | $ 11.0

X
- Definition Capital Lease Cost Of Asset + References No definition available. + Details
Name: | bmj_CapitalLeaseCostOfAsset
Namespace Prefix: | bmj_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | bmj_DepreciationAndAmortizationExpensesForPropertyPlantAndEquipmentLineItems
Namespace Prefix: | bmj_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
Name: | us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant