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Balance Sheet Components (Tables) | 12 Months Ended
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Jun. 30, 2022
Balance Sheet Related Disclosures [Abstract] |
Schedule of Accounts, Notes, Loans and Financing Receivable | Accounts receivable, net
| June 30,
| 2022 |  | 2021
| (in thousands)
Accounts receivable | $ | 84,442 |  |  | $ | 48,234 |
Less: Allowance for price adjustments | (18,731) |  |  | (12,415) |
Less: Allowance for doubtful accounts | (30) |  |  | (30) |
Accounts receivable, net | $ | 65,681 |  |  | $ | 35,789 |
Schedule of Inventory, Current | Inventories
| June 30,
| 2022 |  | 2021
| (in thousands)
Raw materials | $ | 67,960 |  |  | $ | 68,900 |
Work in-process | 80,720 |  |  | 68,824 |
Finished goods | 9,360 |  |  | 16,569 |
| $ | 158,040 |  |  | $ | 154,293 |
Schedule of Other Current Assets | Other current assets
| June 30,
| 2022 |  | 2021
| (in thousands)
VAT receivable | $ | 737 |  |  | $ | 1,539 |
Other prepaid expenses | 3,954 |  |  | 1,465 |
Prepaid insurance | 2,590 |  |  | 2,615 |
Prepaid maintenance | 826 |  |  | 1,670 |
Prepayments to supplier | 257 |  |  | 2,540 |
Prepaid income tax | 2,086 |  |  | 2,221 |
Interest receivable | 25 |  |  | 2,207 |
Customs deposit | — |  |  | 270 |
Other receivables | 745 |  |  | 68 |
| $ | 11,220 |  |  | $ | 14,595 |
Property, Plant and Equipment | Depreciation is provided for on a straight-line basis over the estimated useful lives of the related assets as follows:
Building |  | 20 years
Manufacturing machinery and equipment |  | 8 to 10 years
Equipment and tooling |  | 3 to 5 years
Computer hardware and software |  | 3 to 5 years
Office furniture and equipment |  | 5 years
Leasehold and building improvements |  | 2 to 20 years
Vehicle |  | 5 years
Property, plant and equipment, net
| June 30,
| 2022 |  | 2021
| (in thousands)
Land | $ | 4,877 |  |  | $ | 4,877 |
Building | 16,691 |  |  | 71,454 |
Manufacturing machinery and equipment | 287,574 |  |  | 515,320 |
Equipment and tooling | 28,052 |  |  | 27,017 |
Computer equipment and software | 46,758 |  |  | 41,518 |
Office furniture and equipment | 2,820 |  |  | 3,814 |
Leasehold improvements | 35,254 |  |  | 74,733 |
Land use rights | — |  |  | 9,319 |
| 422,026 |  |  | 748,052 |
Less: accumulated depreciation | (233,340) |  |  | (348,749) |
| 188,686 |  |  | 399,303 |
Equipment and construction in progress | 129,980 |  |  | 37,674 |
Property, plant and equipment, net | $ | 318,666 |  |  | $ | 436,977 |
Schedule of Other Assets, Noncurrent | Other long-term assets
| June 30,
| 2022 |  | 2021
| (in thousands)
Prepayments for property and equipment | $ | 6,890 |  |  | $ | 14,882 |
Investments in privately held companies | 100 |  |  | 100 |
Customs deposit | 1,708 |  |  | 1,120 |
Deposit with supplier | 6,396 |  |  | — |
Other long-term deposits | 18 |  |  | 927 |
Office leases deposits | 1,012 |  |  | 1,100 |
Other | 1,553 |  |  | 740 |
| $ | 17,677 |  |  | $ | 18,869 |
Schedule of Finite-Lived Intangible Assets | Intangible assets, net
| June 30,
| 2022 |  | 2021
| (in thousands)
Patents and technology rights | $ | 18,037 |  |  | $ | 18,037 |
Trade name | 268 |  |  | 268 |
Customer relationships | 1,150 |  |  | 1,150 |
| 19,455 |  |  | 19,455 |
Less: accumulated amortization | (9,674) |  |  | (6,314) |
| 9,781 |  |  | 13,141 |
Goodwill | 269 |  |  | 269 |
Intangible assets, net | $ | 10,050 |  |  | $ | 13,410 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | Estimated future minimum amortization expense of intangible assets is as follows (in thousands):
Year ending June 30, |
2023 | $ | 3,286 |
2024 | 3,249 |
2025 | 3,246 |
| $ | 9,781 |
Schedule of Accrued Liabilities | Accrued liabilities
| June 30,
| 2022 |  | 2021
| (in thousands)
Accrued compensation and benefits | $ | 34,681 |  |  | $ | 32,756 |
Warranty accrual | 2,650 |  |  | 2,795 |
Stock rotation accrual | 4,798 |  |  | 3,917 |
Accrued professional fees | 2,659 |  |  | 3,017 |
Accrued inventory | 2,491 |  |  | 1,138 |
Accrued facilities related expenses | 2,421 |  |  | 2,536 |
Accrued property, plant and equipment | 20,485 |  |  | 8,688 |
Other accrued expenses | 5,159 |  |  | 6,793 |
Customer deposit | 40,578 |  |  | 7,139 |
ESPP payable | 971 |  |  | 715 |
| $ | 116,893 |  |  | $ | 69,494 |
Schedule of Product Warranty Liability | The activity in the warranty accrual, included in accrued liabilities is as follows:
| Year Ended June 30,
| 2022 |  | 2021 |  | 2020
| (in thousands)
Beginning balance | $ | 2,795 |  |  | $ | 709 |  |  | $ | 623 |
Addition | 1,127 |  |  | 2,443 |  |  | 895 |
Utilization | (1,272) |  |  | (357) |  |  | (809) |
Ending balance | $ | 2,650 |  |  | $ | 2,795 |  |  | $ | 709 |
Stock Rotation Accrual | The activity in the stock rotation accrual, included in accrued liabilities is as follows:
| Year Ended June 30,
| 2022 |  | 2021 |  | 2020
| (in thousands)
Beginning balance | $ | 3,917 |  |  | $ | 3,358 |  |  | $ | 1,921 |
Addition | 5,817 |  |  | 4,742 |  |  | 9,441 |
Utilization | (4,936) |  |  | (4,183) |  |  | (8,004) |
Ending balance | $ | 4,798 |  |  | $ | 3,917 |  |  | $ | 3,358 |
Schedule of Other Long-Term Liabilities | Other long-term liabilities
| June 30, |
| 2022 |  | 2021 |
| (in thousands) |
Deferred payroll taxes | $ | — |  |  | $ | 1,219 |  |
Customer deposits | 70,301 |  |  | 42,000 |  |
Computer software liabilities | 8,302 |  |  | — |  |
Other | — |  |  | 904 |  |
Other long-term liabilities | $ | 78,603 |  |  | $ | 44,123 |  |
Customer deposits are payments received from customers for securing future product shipments. As of June 30, 2022, $34.5 million were from Customer A and $21.9 million were from Customer B, and $13.9 million were from other customers. As of June 30, 2021, $21.0 million were from Customer A and $21.0 million were from Customer B.

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