SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	0 Months Ended
Aug. 23, 2012
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Additional period for which the approval was extended	6 months
Multiplier of period for which approval is extended	3

Represents the additional period for which the approval was extended.

No definition available.

Name:	mcri_AdditionalPeriodForWhichApprovalWasExtended
Namespace Prefix:	mcri_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration