Segment and Geographic Information - Long-lived Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Jun. 30, 2025
Revenues from External Customers and Long-Lived Assets
Property, plant and equipment, net and land use rights, net	$ 336,729	$ 335,385
China
Revenues from External Customers and Long-Lived Assets
Property, plant and equipment, net and land use rights, net	104,041	99,389
United States
Revenues from External Customers and Long-Lived Assets
Property, plant and equipment, net and land use rights, net	226,447	230,518
Other countries
Revenues from External Customers and Long-Lived Assets
Property, plant and equipment, net and land use rights, net	$ 6,241	$ 5,478