Stockholders' Equity - Reclassifications from AOCI (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative					$ 88,663	$ 80,153	$ 76,976
Interest expense, net					152	1,246	1,892
Provision for income tax (expense) / benefit					(8,744)	2,077	(2,064)
Net income	$ 4,510	$ 11,279	$ 9,270	$ 6,523	31,582	21,456	13,089
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					173	0	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)					(1,201)	(319)	0
Interest expense, net					45	(45)	0
Provision for income tax (expense) / benefit					162	(218)	0
Net income					(994)	(582)	0
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)					$ (89)	$ (153)	$ (163)