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Summary of Grants Receivable Activity (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Accounting Policies [Abstract] |  |  |  |
Balance at beginning of year | [1] |  | $ 882 |
Grant costs expensed |  |  | 1,897 | [1]
Grants for equipment purchased |  |  | 44 | [1]
Grant fees |  |  | 52 | [1]
Grant funds received |  |  | (2,173) | [1]
Removal of balance due to deconsolidation of eXoZymes at November 14, 2024 |  |  | (702) | [1]
Balance at end of year |  |  |  | [1]
[1] | In 2024, eXoZymes was deconsolidated from the Company’s consolidated financial statements. As all grant-related costs were associated with eXoZymes, no grant-related figures are reported for 2024.

X
- Definition Amount of grant costs expensed. + References No definition available. + Details
Name: | MDBH_GrantCostsExpensed
Namespace Prefix: | MDBH_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of grant fees. + References No definition available. + Details
Name: | MDBH_GrantFees
Namespace Prefix: | MDBH_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of grant funds received. + References No definition available. + Details
Name: | MDBH_GrantFundsReceived
Namespace Prefix: | MDBH_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of grants for equipment purchased. + References No definition available. + Details
Name: | MDBH_GrantsForEquipmentPurchased
Namespace Prefix: | MDBH_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Removal of balance due to deconsolidation. + References No definition available. + Details
Name: | MDBH_RemovalOfBalanceDueToDeconsolidation
Namespace Prefix: | MDBH_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying amount as of the balance sheet date of amounts due under the terms of governmental, corporate, or foundation grants. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(a)(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_GrantsReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant