Revenue Recognition (Details)	6 Months Ended
Jun. 30, 2012
Revenue Recognition (Textual) [Abstract]
Associated revenue over the related service period	2 years

Associated revenue over the related service period.

No definition available.

Name:	mela_AssociatedRevenueOverRelatedServicePeriod
Namespace Prefix:	mela_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration