v2.4.0.6

Note 3 - Customer and Supplier Concentrations (Detail) - Revenues by geographic location (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Jan. 31, 2013 | Jan. 31, 2012
Revenue: |  |
Amount | $ 6,338 | $ 8,069
Percent | 100.00% | 100.00%
North America (Member) |  |
Revenue: |  |
Amount | 78 | 2,397
Percent | 1.00% | 30.00%
Europe (Member) |  |
Revenue: |  |
Amount | 22 | 26
Asia - Pacific (Member) |  |
Revenue: |  |
Amount | $ 6,238 | $ 5,646
Percent | 99.00% | 70.00%

X
- Definition Geographic segment percent. + References No definition available. + Details
Name: | cmro_GeographicSegmentPercent
Namespace Prefix: | cmro_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Amount of total revenue for the reportable segments, including revenue from external customers, transactions with other operating segments of the same entity, and (gross) interest revenue. All considered to be "operating revenue" for purposes of the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a),(b),(c) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 27 -Subparagraph a, b, c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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_SegmentReportingInformationRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration