XML 81 R67.htm IDEA: XBRL DOCUMENT
v3.22.2

Commitments and Contingencies - Additional Information (Details) $ in Millions | 9 Months Ended
--- | ---
Jun. 30, 2022 USD ($)
Loss Contingencies [Line Items] |
Indemnification period for former officers and members of the boards of directors | 6 years
Bellevue, Washington Office Space |
Loss Contingencies [Line Items] |
Letter of credit as security deposit | $ 1.3
Other Facility |
Loss Contingencies [Line Items] |
Letter of credit as security deposit | $ 0.5

X
- Definition Indemnification period for former officers and members of boards of directors. + References No definition available. + Details
Name: | crnc_IndemnificationPeriodForFormerOfficersAndMembersOfBoardsOfDirectors
Namespace Prefix: | crnc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=crnc_BellevueWashingtonOfficeSpaceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=crnc_OtherFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |