v2.4.1.9

Note 4 - Stock-Based Compensation - Share-Based Compensation Expense (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2014	Oct. 31, 2013
Stock-based compensation expense	$ 12us-gaap_AllocatedShareBasedCompensationExpense	$ 18us-gaap_AllocatedShareBasedCompensationExpense	$ 36us-gaap_AllocatedShareBasedCompensationExpense	$ 71us-gaap_AllocatedShareBasedCompensationExpense
Impact on basic and diluted earnings per share (in dollars per share)	$ 0cmro_ImpactOnBasicAndDilutedEarningsPerShare	$ 0cmro_ImpactOnBasicAndDilutedEarningsPerShare	$ 0cmro_ImpactOnBasicAndDilutedEarningsPerShare	$ 0cmro_ImpactOnBasicAndDilutedEarningsPerShare

X

- Definition

Represents the impact of stock-based compensation expense on basic and diluted earnings per share.

+ References

No definition available.

+ Details

Name:	cmro_ImpactOnBasicAndDilutedEarningsPerShare
Namespace Prefix:	cmro_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(1)(i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

+ Details

Name:	us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration