The cash outflow for the payment of transaction costs related to a reverse merger.

No definition available.

Name:	bcda_PaymentsOfTransactionCostsForReverseMerger
Namespace Prefix:	bcda_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Note 3 - Reverse Merger (Details Textual) - USD ($)		12 Months Ended
Note 3 - Reverse Merger (Details Textual) - USD ($)	Oct. 24, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash Acquired in Reverse Merger				$ 19,017,000
Payments of Transaction Costs for Reverse Merger				$ 96,000
Assets Acquired from Tiger X [Member]
Cash Acquired in Reverse Merger	$ 19,000,000
Payments of Transaction Costs for Reverse Merger	$ 96,000