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, 2021	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2022
Net Periodic Benefit Costs:
Service cost	$ 1,766	$ 2,003	$ 1,865
Interest cost	38	62	128
Expected returns on assets	(142)	(151)	(170)
Amortization of prior service cost	54	(2)	(55)
Settlement charges		178
Net periodic benefit costs	1,716	2,090	1,768
Other Amounts Recognized in Other Comprehensive Loss:
Net (gain) loss arising during the year	(850)	(593)	801
Prior service cost	(54)	2
Amortization of prior service cost	24	1,005	55
Effect of settlement	8	(178)
Total recognized in other comprehensive (gain) loss	(872)	236	856
Total recognized in net periodic benefit costs and other comprehensive loss	$ 844	$ 2,326	$ 2,624
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 loss				$ (188)
Prior service credit				479
Accumulated other comprehensive loss				$ 291