v2.4.0.6

Note 5 - Customer and Supplier Concentrations (Detail) - Customers Comprising 10 Percent or More of the Company’s Gross Accounts Receivable (USD $) In Thousands, unless otherwise specified | Apr. 30, 2013 | Jan. 31, 2013
--- | --- | ---
Total gross accounts receivable due from customers (in Dollars) | $ 1,573 | $ 1,307
Total gross accounts receivable due from customers | 100.00% | 100.00%
Balance (in Dollars) | 1,532 | 1,291
Percentage | 97.00% | 99.00%
Lenovo Information Products Co Ltd [Member] |  |
Balance (in Dollars) | $ 1,532 | $ 1,291
Percentage | 97.00% | 99.00%

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

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

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- Definition Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 3 -Subparagraph a, b -Article 5 + Details
Name: | us-gaap_AccountsReceivableGrossCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant