Warrants (Details Narrative) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Warrants Details Narrative
Other income due to decrease in liability	$ 1,985	$ 4,906	$ 651	$ 5,043

Other income due to decrease in liability resulting from fair value of warrants.

No definition available.

Name:	mela_OtherIncomeDueToDecreaseInLiabilityResultingFromFairValueWarrants
Namespace Prefix:	mela_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration