XML 53 R39.htm IDEA: XBRL DOCUMENT
v3.19.1

Note 3 - Reverse Merger (Details Textual) - USD ($) |  | 12 Months Ended
--- | --- | ---
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 |  |  |

X
- Definition Represents the amount of cash acquired during the period in a reverse merger. + References No definition available. + Details
Name: | bcda_CashAcquiredInReverseMerger
Namespace Prefix: | bcda_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow for the payment of transaction costs related to a reverse merger. + References No definition available. + Details
Name: | bcda_PaymentsOfTransactionCostsForReverseMerger
Namespace Prefix: | bcda_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=bcda_AssetsAcquiredFromTigerXMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |