Name:	rmti_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments
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Amount of accumulated unrealized loss before deducting unrealized gain on investments in available-for-sale securities impacting investments.

No definition available.

Name:	rmti_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments
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Represents the average payment term of customers.

No definition available.

Name:	rmti_AveragePaymentTermOfCustomers
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Represents the average payment term of distributors.

No definition available.

Name:	rmti_AveragePaymentTermOfDistributors
Namespace Prefix:	rmti_
Data Type:	xbrli:durationItemType
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Reclassification Of Deferred License Revenue From Long Term Liabilities To Current Liabilities

No definition available.

Name:	rmti_ReclassificationOfDeferredLicenseRevenueFromLongTermLiabilitiesToCurrentLiabilities
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Data Type:	xbrli:monetaryItemType
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The amount reclassified from inventory current to noncurrent.

No definition available.

Name:	rmti_ReclassificationOfInventoryFromCurrentToNoncurrent
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- References

No definition available.

Name:	us-gaap_AvailableForSaleSecuritiesAbstract
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Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26626-111562

Name:	us-gaap_AvailableForSaleSecuritiesCurrent
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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

Name:	us-gaap_NumberOfReportableSegments
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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

Name:	us-gaap_ResearchAndDevelopmentAbstract
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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 730
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756

Name:	us-gaap_ResearchAndDevelopmentExpense
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- References

No definition available.