v2.4.0.8

Note 3 - Customer and Supplier Concentrations (Details) - Suppliers Comprising 10 Percent or More of the Company’s Gross Accounts Receivable (USD $) In Thousands, unless otherwise specified | Jan. 31, 2014 | Jan. 31, 2013
--- | --- | ---
Note 3 - Customer and Supplier Concentrations (Details) - Suppliers Comprising 10 Percent or More of the Company’s Gross Accounts Receivable [Line Items] |  |
Total gross accounts receivable due from suppliers (in Dollars) | $ 128 | $ 1,156
Total gross accounts receivable due from suppliers | 100.00% | 100.00%
Customer concentration: |  |
Balance (in Dollars) | 122 | 1,130
Percentage | 95.00% | 98.00%
Power Systems Technologies Ltd [Member] |  |
Customer concentration: |  |
Balance (in Dollars) |  | 1,008
Percentage | 0.00% | 87.00%
Zheng Ge Electrical Company Ltd [Member] |  |
Customer concentration: |  |
Balance (in Dollars) | $ 122 | $ 122
Percentage | 95.00% | 11.00%

X
- Definition Accounts receivable due from suppliers gross current. + References No definition available. + Details
Name: | cmro_AccountsReceivableDueFromSuppliersGrossCurrent
Namespace Prefix: | cmro_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Accounts receivable due from suppliers gross current percentage. + References No definition available. + Details
Name: | cmro_AccountsReceivableDueFromSuppliersGrossCurrentPercentage
Namespace Prefix: | cmro_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | cmro_CustomerConcentrationAbstract00
Namespace Prefix: | cmro_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | cmro_MajorSuppliersAccountsReceivableGrossCurrent
Namespace Prefix: | cmro_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | cmro_MajorSuppliersAccountsReceivableGrossPercentage
Namespace Prefix: | cmro_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | cmro_Note3CustomerandSupplierConcentrationsDetailsSuppliersComprising10PercentorMoreoftheCompanysGrossAccountsReceivableLineItems
Namespace Prefix: | cmro_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration