XML 89 R73.htm IDEA: XBRL DOCUMENT
v3.23.2

Employee Benefit Plans (Schedule of PSUs Earned and Vested Based on Total Stockholder Return (TSR PSUs)) (Details) - Executive Officer Member - TSR PSU | 12 Months Ended
--- | ---
Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Relative TSR, Below Threshold | TSR is less than the Index by more than 37.5 percentage points
Relative TSR, Threshold | TSR is less than the Index by 37.5 percentage points
Relative TSR, Target | TSR equals the Index
Relative TSR, Maximum | TSR is greater than the Index by 25 percentage points or more
Shares vested, Below Threshold | 0.00%
Shares vested, Threshold | 25.00%
Shares vested, Target | 100.00%
Shares vested, Maximum | 150.00%

X
- Definition Share based compensation arrangement by share based payment award relative TSR as description of below threshold. + References No definition available. + Details
Name: | extr_ShareBasedCompensationArrangementByShareBasedPaymentAwardRelativeTSRAsDescriptionOfBelowThreshold
Namespace Prefix: | extr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share based compensation arrangement by share based payment award relative TSR as description of maximum. + References No definition available. + Details
Name: | extr_ShareBasedCompensationArrangementByShareBasedPaymentAwardRelativeTSRAsDescriptionOfMaximum
Namespace Prefix: | extr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share based compensation arrangement by share based payment award relative TSR as description of target. + References No definition available. + Details
Name: | extr_ShareBasedCompensationArrangementByShareBasedPaymentAwardRelativeTSRAsDescriptionOfTarget
Namespace Prefix: | extr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share based compensation arrangement by share based payment award relative TSR as description of threshold. + References No definition available. + Details
Name: | extr_ShareBasedCompensationArrangementByShareBasedPaymentAwardRelativeTSRAsDescriptionOfThreshold
Namespace Prefix: | extr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share based compensation arrangement by share based payment award shares vested as percentage of below threshold. + References No definition available. + Details
Name: | extr_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedAsPercentageOfBelowThreshold
Namespace Prefix: | extr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share​ based​ compensation​ arrangement​ by share​ based​ payment​ award​ shares​ vested ​as percentage​ of maximum. + References No definition available. + Details
Name: | extr_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedAsPercentageOfMaximum
Namespace Prefix: | extr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share based compensation arrangement by share based payment award shares vested as percentage of target. + References No definition available. + Details
Name: | extr_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedAsPercentageOfTarget
Namespace Prefix: | extr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share based compensation arrangement by share based payment award shares vested as percentage of threshold. + References No definition available. + Details
Name: | extr_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedAsPercentageOfThreshold
Namespace Prefix: | extr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
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_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_TitleOfIndividualAxis=srt_ExecutiveOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=extr_TotalStockholderReturnPerformanceSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |