v3.26.1
Income Taxes (Schedule of Income Tax Paid Net Refunds Received) (Parenthetical) (Details)
12 Months Ended
Jun. 30, 2026
Income Tax Disclosure [Abstract]
Percentage of minimum for income tax paid
5.00%
X
- Definition
Percentage of minimum for income tax paid.
+ References
No definition available.
+ Details
Name:
extr_PercentageOfMinimumForIncomeTaxPaid
Namespace Prefix:
extr_
Data Type:
dtr-types:percentItemType
Balance Type:
na
Period Type:
duration
X
- References
No definition available.
+ Details
Name:
us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration