Stockholders' Equity - Reclassifications from AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative	$ 93,143	$ 88,663	$ 80,153
Interest expense, net	514	792	1,289
Provision for income tax (expense) / benefit	(7,331)	(8,744)	2,077
Net income	33,655	31,582	21,456
Foreign Currency Translation Adjustment | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative	0	173	0
Derivative Valuation | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of services (exclusive of depreciation and amortization presented separately below)	(257)	(1,201)	(319)
Interest expense, net	0	45	(45)
Provision for income tax (expense) / benefit	(44)	162	(218)
Net income	(301)	(994)	(582)
Defined Benefit Plan | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of services (exclusive of depreciation and amortization presented separately below)	$ 0	$ (89)	$ (153)