SEGMENT INFORMATION (Details)	12 Months Ended
Dec. 31, 2014 segment
SEGMENT INFORMATION
Number of reportable segment in which Mountaineer, Presque Isle Downs and Scioto Downs is aggregated	1

Represents the number of reportable segments into which certain subsidiaries are aggregated.

No definition available.

Name:	mntg_NumberOfReportableSegmentsInWhichSubsidiariesAreAggregated
Namespace Prefix:	mntg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration