XML 81 R68.htm IDEA: XBRL DOCUMENT
v3.20.1

Subsequent Event - Additional Information (Detail) - Subsequent Event $ in Millions | Apr. 28, 2020 USD ($)
--- | ---
Subsequent Event [Line Items] |
Percentage of common stock held | 24.00%
Adicet |
Subsequent Event [Line Items] |
Contract termination fee | $ 6.1

X
- Definition Common Stock Ownership Percentage + References No definition available. + Details
Name: | torc_CommonStockOwnershipPercentage
Namespace Prefix: | torc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Termination Fees + References No definition available. + Details
Name: | torc_TerminationFees
Namespace Prefix: | torc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=torc_AdicetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |