Commitments and Contingencies - Standby Letters of Credit: Letters of Credit (Details) - USD ($) $ in Millions	Jun. 30, 2024	Jun. 30, 2023
Commitments and Contingencies.
Letters of credit outstanding amount	$ 6.2	$ 7.1

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant