Segment and Geographic information - Revenue by Geographical Segment (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information
Revenue	$ 696,162	$ 657,274	$ 691,321
Hong Kong
Segment Reporting Information
Revenue	617,574	524,788	561,855
China
Segment Reporting Information
Revenue	58,514	95,417	84,546
South Korea
Segment Reporting Information
Revenue	1,691	9,956	9,168
United States
Segment Reporting Information
Revenue	4,093	4,938	19,744
Other countries
Segment Reporting Information
Revenue	$ 14,290	$ 22,175	$ 16,008

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details