v3.5.0.1

Note 7 - Accrued Liabilities (Details) - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Uninvoiced Materials and Services Received [Member]
Accrued liabilities	$ 331	$ 331
Accrued Legal and Professional Fees [Member]
Accrued liabilities	169	169
Accrued Payroll and Related Expenses [Member]
Accrued liabilities	9	33
Accrued Warranty [Member]
Accrued liabilities	4	4
Accrued Other Liabilities [Member]
Accrued liabilities	142	150
Accrued liabilities	$ 655	$ 687

X

- Definition

Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other.

+ References

No definition available.

+ Details

Name:	us-gaap_AccruedLiabilitiesAndOtherLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_NatureOfExpenseAxis=cmro_UninvoicedMaterialsAndServicesReceivedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_NatureOfExpenseAxis=cmro_AccruedLegalandProfessionalFeesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_NatureOfExpenseAxis=cmro_AccruedPayrollandRelatedExpensesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_NatureOfExpenseAxis=cmro_AccruedWarrantyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_NatureOfExpenseAxis=cmro_AccruedOtherLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: