Defined Benefit Pension Obligation - Obligations and Funded Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Change in benefit obligation:
Actuarial (gain)/loss	$ (800)
Amounts recognized within the consolidated balance sheets:
Assets	480,098	$ 490,927
Defined benefit pension plan
Change in benefit obligation:
Benefit obligation—beginning of fiscal year	18,426	17,577
Service cost	1,766	2,003	$ 1,865
Interest cost	38	62	128
Plan participants’ contributions	1,676	2,886
Plan amendment	25	975
Actuarial (gain)/loss	(807)	(615)
Foreign currency changes	281	545
Benefit and expense payments	(2,700)	(5,007)
Benefit obligation—end of fiscal year	18,705	18,426	17,577
Change in plan assets:
Plan assets—beginning of fiscal year	13,958	14,228
Employer contributions	1,117	1,327	1,400
Actual return on plan assets	199	112
Plan participants’ contributions	1,676	2,885
Foreign currency changes	169	413
Benefit and expense payments	(2,700)	(5,007)
Plan assets—end of fiscal year	14,419	13,958	$ 14,228
Funded status	(4,286)	(4,468)
Amounts recognized within the consolidated balance sheets:
Long-term other liabilities	4,286	4,468
Net amount recognized	$ 4,286	$ 4,468