Represents the amount of cash inflow during the period from collections of receivables from related parties.

No definition available.

Name:	bcda_ProceedsFromCollectionsOfRelatedPartyReceivables
Namespace Prefix:	bcda_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Note 14 - Subsequent Events (Details Textual) - Subsequent Event [Member] - USD ($)	Nov. 07, 2020	Nov. 04, 2020	Oct. 07, 2020
Paycheck Protection Program CARES Act [Member]
Debt Instrument, Pending Forgiveness Amount			$ 506,413
Debt Instrument, Amount Forgiven	$ 506,413
Funding Agreement [Member] \| BSLF, L.L.C. [Member]
Proceeds from Collections of Related Party Receivables		$ 762,000