XML 42 R30.htm IDEA: XBRL DOCUMENT
v3.21.2

Commitments and Contingencies - Additional Information (Details) - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Other Commitments [Line Items] |  |
Termination charges | $ 0 | $ 0

X
- Definition Termination charges. + References No definition available. + Details
Name: | rlyb_TerminationCharges
Namespace Prefix: | rlyb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration