v2.4.0.6

Note 5 - Customer and Supplier Concentrations (Tables) | 3 Months Ended
--- | ---
Apr. 30, 2013
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] |
|  | Three Months Ended April 30, |
|  | 2013 |  |  | 2012 |
North America |  | $ | 46 |  |  | $ | 41 |
Asia |  |  | 1,364 |  |  |  | 2,155 |
Other |  |  | 3 |  |  |  | 5 |
|  | $ | 1,413 |  |  | $ | 2,201 |
|  | April 30, 2013 |  |  | January 31, 2013 |
Total gross accounts receivable due from customers |  | $ | 1,573 |  |  |  | 100 | % |  | $ | 1,307 |  |  |  | 100 | %
Customer concentration: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lenovo Information Products Co., Ltd. |  |  | 1,532 |  |  |  | 97 | % |  |  | 1,291 |  |  |  | 99 | %
|  | $ | 1,532 |  |  |  | 97 | % |  | $ | 1,291 |  |  |  | 99 | %
|  | April 30, 2013 |  |  | January 31, 2013 |
Total gross accounts receivable due from suppliers |  | $ | 1,111 |  |  |  | 100 | % |  | $ | 1,156 |  |  |  | 100 | %
Supplier concentration: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Power Systems Technologies, Ltd. |  |  | 951 |  |  |  | 86 | % |  |  | 1,008 |  |  |  | 87 | %
Zheng Ge Electrical Co., Ltd. |  |  | 122 |  |  |  | 11 | % |  |  | 122 |  |  |  | 11 | %
|  | $ | 1,073 |  |  |  | 97 | % |  | $ | 1,130 |  |  |  | 98 | %
Equity Method Investments [Table Text Block] |
|  | April 30, 2013 |  |  | January 31, 2013 |
Total gross accounts payable |  | $ | 3,814 |  |  |  | 100 | % |  | $ | 3,688 |  |  |  | 100 | %
Supplier concentration: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Chicony Power Technology, Co. Ltd |  |  | 1,100 |  |  |  | 29 | % |  |  | 1,100 |  |  |  | 30 | %
Pillsbury Winthrop Shaw Pittman, LLP. |  |  | 1,754 |  |  |  | 46 | % |  |  | 1,614 |  |  |  | 44 | %
|  | $ | 2,854 |  |  |  | 75 | % |  | $ | 2,714 |  |  |  | 74 | %
Quarter Ended [Member] |
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] |
|  | Three Months Ended April 30, |
|  | 2013 |  |  | 2012 |
Total revenue |  | $ | 1,413 |  |  |  | 100 | % |  | $ | 2,201 |  |  |  | 100 | %
Customer concentration: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lenovo Information Products Co., Ltd. |  |  | 1,378 |  |  |  | 98 | % |  |  | 2,137 |  |  |  | 97 | %
|  | $ | 1,378 |  |  |  | 98 | % |  | $ | 2,137 |  |  |  | 97 | %

X
- Definition Schedule of accounts receivable by major customers by reporting segments. + References No definition available. + Details
Name: | cmro_ScheduleOfAccountsReceivableByMajorCustomersByReportingSegmentsTableTextBlock
Namespace Prefix: | cmro_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of accounts receivable by major suppliers by reporting segments. + References No definition available. + Details
Name: | cmro_ScheduleOfAccountsReceivableByMajorSuppliersByReportingSegmentsTableTextBlock
Namespace Prefix: | cmro_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. + References No definition available. + Details
Name: | us-gaap_ScheduleOfRevenueByMajorCustomersByReportingSegmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 + Details
Name: | us-gaap_ScheduleOfRevenueFromExternalCustomersAttributedToForeignCountriesByGeographicAreaTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration