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Note 7 - Accrued Expenses and Other Current Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Schedule of Accrued Liabilities and Other Current Liabilities [Table Text Block] |
|  | December 31, |  |  | December 31, |
|  | 2024 |  |  | 2023 |
Accrued expenses |  | $ | 22 |  |  | $ | 75 |
Accrued salaries and employee benefits |  |  | 641 |  |  |  | 661 |
Accrued clinical trial costs |  |  | 356 |  |  |  | 1,017 |
Grant liability |  |  | 468 |  |  |  | 471 |
Customer deposits |  |  | 64 |  |  |  | 90 |
Payable to related party |  |  | — |  |  |  | 71 |
Total |  | $ | 1,551 |  |  | $ | 2,385 |

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- Definition Tabular disclosure of the components of accrued liabilities and other current liabilities. + References No definition available. + Details
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Namespace Prefix: | bcda_
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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