Represents the average payment term of customers.

No definition available.

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Namespace Prefix:	rmti_
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- Definition

Represents the average payment term of distributors.

+ References

No definition available.

+ Details

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- Definition

Represents the number of distribution and license agreements.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
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- Definition

Product Purchase Agreement, Quarterly Non-Refundable Payments From Counterparty

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Revenue Recognition [Line Items]

+ References

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Publisher FASB
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-8

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
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-Section 55
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-49

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-Name Accounting Standards Codification
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-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-18

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	duration

- Details

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- Details

Name:	srt_ProductOrServiceAxis=rmti_ProductsPurchaseAgreementMember
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- Details

Name:	srt_MajorCustomersAxis=rmti_CustomerAMember
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- Details

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- Details

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- Details

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Revenue Recognition - Nature of Goods and Services (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) agreement segment	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Revenue Recognition [Line Items]
Number of operating segments \| segment			1
Customers average payment term			30 days
Distributors average payment term			60 days
Number of distribution and license agreements \| agreement			3
Revenue recorded	$ 17,780	$ 16,071	$ 35,116	$ 34,985
Distribution and Licensing Agreements
Revenue Recognition [Line Items]
Deferred revenue			$ 300
Products Purchase Agreement
Revenue Recognition [Line Items]
Product purchase agreement, quarterly non-refundable payments to ensure supply commitment					$ 1,300
Revenue recorded		$ 300		$ 1,300
Customer A \| Revenue Benchmark \| Customer Concentration Risk
Revenue Recognition [Line Items]
Customer concentration, percentage	8.00%	11.00%	7.00%	20.00%
Customer A \| Accounts Receivable \| Customer Concentration Risk
Revenue Recognition [Line Items]
Customer concentration, percentage					14.00%
Customer B \| Revenue Benchmark \| Customer Concentration Risk
Revenue Recognition [Line Items]
Customer concentration, percentage	9.00%	10.00%	10.00%	10.00%
Customer B \| Accounts Receivable \| Customer Concentration Risk
Revenue Recognition [Line Items]
Customer concentration, percentage			13.00%
Customer C \| Revenue Benchmark \| Customer Concentration Risk
Revenue Recognition [Line Items]
Customer concentration, percentage	11.00%	11.00%	10.00%	9.00%
Customer C \| Accounts Receivable \| Customer Concentration Risk
Revenue Recognition [Line Items]
Customer concentration, percentage			17.00%