v2.4.1.9
Note 4 - Stock-Based Compensation (Details Textual) (USD $)
3 Months Ended 9 Months Ended
Oct. 31, 2014
Oct. 31, 2013
Oct. 31, 2014
Oct. 31, 2013
Feb. 11, 2013
Feb. 08, 2013
Jun. 30, 2008
Dec. 31, 2005
Jul. 31, 2011
May 31, 2005
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 20,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized   $ 20,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized              
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     150 days              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 2,675,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized   2,675,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized              
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent     100.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent              
Share Based Compensation Arrangement by Share Based Payment Award Purchase Price of Common Stock Percent Condition     110.00%cmro_ShareBasedCompensationArrangementByShareBasedPaymentAwardPurchasePriceOfCommonStockPercentCondition              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue   $ 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue              
Share Price $ 0.17us-gaap_SharePrice   $ 0.17us-gaap_SharePrice   $ 0.14us-gaap_SharePrice $ 0.158us-gaap_SharePrice        
Share Based Compensation Arrangement by Share Based Payment Award Percentage of Optionee Condition     10.00%cmro_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOptioneeCondition              
Equity Incentive Plan 2005 And 2011 [Member]                    
Share Based Compensation Options Maximum Expiration Period Following Grant Date     10 years              
Share Based Compensation Options Maximum Expiration Period Following Grant Date for Specified Percentage Ownership     5 years              
Share Based Compensation Determination of Expiration Period Specified Percentage     10.00%cmro_ShareBasedCompensationDeterminationOfExpirationPeriodSpecifiedPercentage
/ us-gaap_PlanNameAxis
= cmro_EquityIncentivePlan2005And2011Member
             
Equity Incentive Plan 2005 [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized               450,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= cmro_EquityIncentivePlan2005Member
   
Share Based Compensation Arrangement by Share Based Payment Award Number of Shares Authorized Including Additional Shares Authorized             1,100,000cmro_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedIncludingAdditionalSharesAuthorized
/ us-gaap_PlanNameAxis
= cmro_EquityIncentivePlan2005Member
     
Equity Incentive Plan 2011 [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized                 750,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= cmro_EquityIncentivePlan2011Member
 
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 35,224us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= cmro_EquityIncentivePlan2011Member
  35,224us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_PlanNameAxis
= cmro_EquityIncentivePlan2011Member
             
Prior Employee Plan [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized                   825,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= cmro_PriorEmployeePlanMember
Share Based Compensation Options Maximum Expiration Period Following Grant Date     10 years              
Share Based Compensation Options Maximum Expiration Period Following Grant Date for Specified Percentage Ownership     5 years              
Share Based Compensation Determination of Expiration Period Specified Percentage     10.00%cmro_ShareBasedCompensationDeterminationOfExpirationPeriodSpecifiedPercentage
/ us-gaap_PlanNameAxis
= cmro_PriorEmployeePlanMember
             
Restricted Stock [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period   420,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
  420,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember