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Baxter Distribution Agreement (Details) - Baxter Healthcare Organization - USD ($)	Jun. 23, 2017	Sep. 12, 2016
Facility Fee		$ 10,000,000
Payment (made) received	$ 0

Represents the fee amount Baxter agreed to pay during the Distribution Agreement to build and operate a new manufacturing facility.

No definition available.

Name:	rmti_FacilityFee
Namespace Prefix:	rmti_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

No definition available.

Name:	us-gaap_LitigationSettlementAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_CoVenturerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: