v2.4.1.9
Note 6 - Customer and Supplier Concentrations - Supplier Concentration Risk Accounts Receivable (Details) (USD $)
In Thousands, unless otherwise specified
Oct. 31, 2014
Jan. 31, 2014
Total gross accounts receivable due from suppliers $ 122cmro_AccountsReceivableDueFromSuppliersGrossCurrent $ 128cmro_AccountsReceivableDueFromSuppliersGrossCurrent
Total gross accounts receivable due from suppliers 100.00%cmro_AccountsReceivableDueFromSuppliersGrossCurrentPercentage 100.00%cmro_AccountsReceivableDueFromSuppliersGrossCurrentPercentage
Zheng Ge Electrical Company Ltd [Member]    
Zheng Ge Electrical Co., Ltd. $ 122cmro_MajorSuppliersAccountsReceivableGrossCurrent
/ us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis
= cmro_ZhengGeElectricalCompanyLtdMember
$ 122cmro_MajorSuppliersAccountsReceivableGrossCurrent
/ us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis
= cmro_ZhengGeElectricalCompanyLtdMember
Zheng Ge Electrical Co., Ltd. 100.00%cmro_MajorSuppliersAccountsReceivableGrossPercentage
/ us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis
= cmro_ZhengGeElectricalCompanyLtdMember
95.00%cmro_MajorSuppliersAccountsReceivableGrossPercentage
/ us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis
= cmro_ZhengGeElectricalCompanyLtdMember