(11) Employee Benefit Plan (Detail) (USD $)	12 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Employees contribution	15.00%
Employer's contribution	50.00%
Defined contribution plan employer matching contribution percent of salary per employee lower of:
Percentage of employer's contribution per employee	2.50%
Amount of employer's contribution per employee (in dollars)	$ 6,250
Amount of discretionary contributions (in dollars)	$ 208,000	$ 183,000

Percentage of employer's matching contributions to a defined contribution plan per employee.

No definition available.

Name:	cmkg_DefinedContributionPlanEmployerMatchingContributionPercentOfSalaryPerEmployee
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Data Type:	num:percentItemType
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Period Type:	instant

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Amount of employer's matching contributions to a defined contribution plan per employee.

No definition available.

Name:	cmkg_DefinedContributionPlanEmployerMatchingContributionPerEmployee
Namespace Prefix:	cmkg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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Period Type:	duration

Amount of discretionary contributions made by an employer to a defined contribution plan.

No definition available.

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

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Maximum percentage of employee gross pay, by the terms of the plan, that the employer may contribute to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanMaximumAnnualContributionPerEmployeePercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration