Represents the adjusted threshold price per ton as per the collaborative agreement.

No definition available.

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Namespace Prefix:	msb_
Data Type:	srt-types:perUnitItemType
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Period Type:	duration

- Definition

Represents the minimum advance royalty to be received by the entity on a quarterly basis under the assignment agreement. This amount consists of an annual amount adjusted for inflation and deflation.

+ References

No definition available.

+ Details

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Namespace Prefix:	msb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the period within which the related party is obligated to make payments of overriding royalties on product shipments, following the calendar quarter in which such shipments occur, as per the collaborative agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	msb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 808
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479402/808-10-50-1

+ Details

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Period Type:	duration

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
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- Details

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ROYALTY AGREEMENT (Details)	12 Months Ended
ROYALTY AGREEMENT (Details)	Dec. 31, 2024 USD ($)	Jan. 31, 2024 USD ($) $ / T	Jan. 31, 2023 USD ($) $ / T	Jan. 31, 2022 USD ($) $ / T
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Adjusted threshold price (in dollars per ton)		67.75	66.00	62.03
Cyprus NMC
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Adjusted threshold price (in dollars per ton)		67.75	66.00	62.03
Cyprus NMC \| Within a range of not more
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Period for payments of overriding royalties on product shipments		30 days
Cyprus NMC \| Within a range of not less
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Adjusted threshold price (in dollars per ton)		30
Advance royalty threshold \| $		$ 500,000	$ 1,100,498	$ 1,034,237
Cyprus NMC \| Forecast [Member] \| Within a range of not less
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Advance royalty threshold \| $	$ 1,129,615