Defined Benefit Pension Obligation - Components of Net Periodic Benefit Cost and Other Amounts Recognized in Other Comprehensive Loss (Details) - Defined benefit pension plan - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2023
Net Periodic Benefit Costs:
Service cost	$ 1,513	$ 1,766	$ 2,003
Interest cost	75	38	62
Expected returns on assets	(144)	(142)	(151)
Amortization of prior service cost	54	54	(2)
Settlement charges			178
Net periodic benefit costs	1,498	1,716	2,090
Other Amounts Recognized in Other Comprehensive Loss:
Net (gain) loss arising during the year	(3,584)	(850)	(593)
Prior service cost	(53)	(54)	2
Amortization of prior service cost	(678)	24	1,005
Effect of settlement	4	8	(178)
Total recognized in other comprehensive (gain) loss	(4,311)	(872)	236
Total recognized in net periodic benefit costs and other comprehensive loss	$ (2,813)	$ 844	$ 2,326
Scenario Forecast
Amounts in accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost during fiscal year 2021
Net gain				$ 172
Prior service credit				24
Accumulated other comprehensive loss				$ 196