Balance Sheet Components - Accrued liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Concentration Risk
Accrued compensation and benefits	$ 17,766	$ 14,945
Warranty accrual	2,118	2,407	$ 1,674	$ 2,650
Stock rotation accrual	6,184	4,660	$ 5,588	$ 4,798
Accrued professional fees	3,399	3,198
Accrued inventory	1,465	728
Accrued facilities related expenses	2,184	2,137
Accrued property, plant and equipment	2,704	6,986
Other accrued expenses	4,755	3,822
Customer deposits	17,030	32,182
ESPP payable	1,422	1,306
Accrued liabilities	59,027	72,371
Customer A
Concentration Risk
Customer deposits	7,000	9,000
Customer B
Concentration Risk
Customer deposits	2,000	8,900
Other Customer
Concentration Risk
Customer deposits	$ 8,000	$ 14,300