Accumulated Other Comprehensive Income (AOCI) - Reclassification out of AOCI (Details) - Reclassification out of Accumulated Other Comprehensive Income. - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amortization of defined benefit pension items	$ 5	$ (11)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Compensation and benefits	Compensation and benefits
Total reclassified amount before tax	$ 5	$ (11)
Provision for income tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax benefit	1	(2)
Net Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total reclassification out of AOCI	$ 4	$ (9)