Description of Business (Details)	Mar. 31, 2013 facilities
Description of Business
Number of US manufacturing and distribution facilities	3

Represents the number of manufacturing and distribution facilities located in the United States.

No definition available.

Name:	rmti_ManufacturingAndDistributionUSFacilitiesNumber
Namespace Prefix:	rmti_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant