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Inventories - Additional Information (Detail) (USD $)	Sep. 30, 2013
Inventory Disclosure [Abstract]
Reserve for obsolete inventory	$ 325,000

X

- Definition

Obsolete Inventory Reserves

+ References

No definition available.

+ Details

Name:	mela_ObsoleteInventoryReserves
Namespace Prefix:	mela_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_InventoryDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration