Description of Business (Details)	12 Months Ended
Dec. 31, 2017
Description of Business
Percentage of supply in domestic market	25

Represents the percentage of supply in domestic market.

No definition available.

Name:	rmti_PercentageOfSupplyInDomesticMarket
Namespace Prefix:	rmti_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration