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Subsequent Events - Additional Information (Detail) (Subsequent Event [Member])	May 05, 2014
Subsequent Event [Member]
Number of assets sold	12

X

- Definition

Number of assets that would be sold under the agreement.

+ References

No definition available.

+ Details

Name:	med_NumberOfAssetsSold
Namespace Prefix:	med_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant