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Balance Sheet Components | 12 Months Ended
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Jun. 30, 2024
Balance Sheet Related Disclosures [Abstract] |
Balance Sheet Components | Balance Sheet Components Accounts receivable, net
| June 30,
| 2024 |  | 2023
| (in thousands)
Accounts receivable | $ | 54,265 |  |  | $ | 62,426 |
Less: Allowance for price adjustments | (41,689) |  |  | (39,976) |
Less: Allowance for doubtful accounts | (30) |  |  | (30) |
Accounts receivable, net | $ | 12,546 |  |  | $ | 22,420 |
Inventories
| June 30,
| 2024 |  | 2023
| (in thousands)
Raw materials | $ | 78,064 |  |  | $ | 86,620 |
Work in-process | 87,898 |  |  | 69,426 |
Finished goods | 29,788 |  |  | 27,201 |
| $ | 195,750 |  |  | $ | 183,247 |
Other current assets
| June 30,
| 2024 |  | 2023
| (in thousands)
VAT receivable | $ | 304 |  |  | $ | 275 |
Other prepaid expenses | 1,822 |  |  | 3,863 |
Prepaid insurance | 4,623 |  |  | 4,162 |
Prepaid maintenance | 2,195 |  |  | 1,697 |
Prepayments to supplier | 1,301 |  |  | 10,689 |
Prepaid income tax | 819 |  |  | 707 |
Interest receivable | 383 |  |  | 135 |
Other receivables | 2,718 |  |  | 1,138 |
| $ | 14,165 |  |  | $ | 22,666 |
Property, plant and equipment, net
| June 30,
| 2024 |  | 2023
| (in thousands)
Land | $ | 4,877 |  |  | $ | 4,877 |
Building and building improvements | 71,266 |  |  | 26,478 |
Manufacturing machinery and equipment | 423,960 |  |  | 398,757 |
Equipment and tooling | 36,203 |  |  | 32,737 |
Computer equipment and software | 53,081 |  |  | 49,890 |
Office furniture and equipment | 3,193 |  |  | 3,087 |
Leasehold improvements | 41,671 |  |  | 38,787 |
| 634,251 |  |  | 554,613 |
Less: accumulated depreciation | (320,751) |  |  | (272,503) |
| 313,500 |  |  | 282,110 |
Equipment and construction in progress | 23,119 |  |  | 75,721 |
Property, plant and equipment, net | $ | 336,619 |  |  | $ | 357,831 |
Total depreciation expense was $50.5 million, $40.4 million and $39.9 million for fiscal years 2024, 2023 and 2022, respectively. The Company capitalized $0.6 million, $0.5 million and $0.3 million of software development costs during the fiscal years 2024, 2023 and 2022, respectively. Amortization of capitalized software development costs was $0.6 million in fiscal year 2024, $0.4 million in fiscal year 2023 and $0.4 million in fiscal year 2022. Unamortized capitalized software development costs in each of the periods presented at June 30, 2024 and 2023 were $1.0 million and $0.9 million, respectively. Other long-term assets
| June 30,
| 2024 |  | 2023
| (in thousands)
Prepayments for property and equipment | $ | 620 |  |  | $ | 1,717 |
Investment in privately held companies | 100 |  |  | 100 |
Customs deposit | 652 |  |  | 931 |
Deposit with supplier | 22,117 |  |  | 12,290 |
Other long-term deposits | 37 |  |  | 37 |
Office leases deposits | 1,418 |  |  | 1,274 |
Other | 295 |  |  | 3,354 |
| $ | 25,239 |  |  | $ | 19,703 |
Intangible assets, net
| June 30,
| 2024 |  | 2023
| (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 | (16,208) |  |  | (12,959) |
| 3,247 |  |  | 6,496 |
Goodwill | 269 |  |  | 269 |
Intangible assets, net | $ | 3,516 |  |  | $ | 6,765 |
The Company is amortizing intangible assets of patents and technology rights related to a license agreement with STMicroelectronics International N.V. Amortization expense for intangible assets was $3.2 million, $3.3 million and $3.4 million for the years ended June 30, 2024, 2023 and 2022, respectively. The estimated useful lives for patents and technology rights and trade name were five years and ten years, respectively. Customer relationships are fully amortized. Estimated future minimum amortization expense of intangible assets is as follows (in thousands):
Year ending June 30, |
2025 | $ | 3,247 |
Accrued liabilities
| June 30,
| 2024 |  | 2023
| (in thousands)
Accrued compensation and benefits | $ | 14,945 |  |  | $ | 15,627 |
Warranty accrual | 2,407 |  |  | 1,674 |
Stock rotation accrual | 4,660 |  |  | 5,588 |
Accrued professional fees | 3,198 |  |  | 2,458 |
Accrued inventory | 728 |  |  | 1,597 |
Accrued facilities related expenses | 2,137 |  |  | 2,327 |
Accrued property, plant and equipment | 6,986 |  |  | 6,402 |
Other accrued expenses | 3,822 |  |  | 4,401 |
Customer deposits | 32,182 |  |  | 38,082 |
ESPP payable | 1,306 |  |  | 1,377 |
| $ | 72,371 |  |  | $ | 79,533 |
Short-term customer deposits are payments received from customers for securing future product shipments. As of June 30, 2024, $9.0 million were from Customer A, $8.9 million were from Customer B, and $14.3 million were from other customers. As of June 30, 2023, $13.5 million were from Customer A, $9.2 million were from Customer B, and $15.4 million were from other customers. The activity in the warranty accrual, included in accrued liabilities is as follows:
| Year Ended June 30,
| 2024 |  | 2023 |  | 2022
| (in thousands)
Beginning balance | $ | 1,674 |  |  | $ | 2,650 |  |  | $ | 2,795 |
Addition | 1,186 |  |  | 3,666 |  |  | 1,127 |
Utilization | (453) |  |  | (4,642) |  |  | (1,272) |
Ending balance | $ | 2,407 |  |  | $ | 1,674 |  |  | $ | 2,650 |
The activity in the stock rotation accrual, included in accrued liabilities is as follows:
| Year Ended June 30,
| 2024 |  | 2023 |  | 2022
| (in thousands)
Beginning balance | $ | 5,588 |  |  | $ | 4,798 |  |  | $ | 3,917 |
Addition | 11,044 |  |  | 13,950 |  |  | 5,817 |
Utilization | (11,972) |  |  | (13,160) |  |  | (4,936) |
Ending balance | $ | 4,660 |  |  | $ | 5,588 |  |  | $ | 4,798 |
Other long-term liabilities
| June 30, |
| 2024 |  | 2023 |
| (in thousands) |
Customer deposits | $ | 19,661 |  |  | $ | 46,393 |  |
Computer software liabilities | — |  |  | 4,644 |  |
Other long-term liabilities | $ | 19,661 |  |  | $ | 51,037 |  |
Customer deposits are payments received from customers for securing future product shipments. As of June 30, 2024, $12.0 million were from Customer A, $2.0 million were from Customer B, and $5.7 million were from other customers. As of June 30, 2023, $21.0 million were from Customer A, $11.7 million were from Customer B and $13.7 million were from other customers.

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