v2.4.0.6

Note 5 - Customer and Supplier Concentrations (Detail) - Suppliers 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 suppliers (in Dollars) | $ 1,111 | $ 1,156
Total gross accounts receivable due from suppliers | 100.00% | 100.00%
Balance (in Dollars) | 1,073 | 1,130
Percentage | 97.00% | 98.00%
Power Systems Technologies, Ltd. [Member] |  |
Balance (in Dollars) | 951 | 1,008
Percentage | 86.00% | 87.00%
Zheng Ge Electrical Company Ltd [Member] |  |
Balance (in Dollars) | $ 122 | $ 122
Percentage | 11.00% | 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
- 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