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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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