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Revenue (Tables) | 12 Months Ended
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Dec. 29, 2024
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregated Revenue | The following tables disclose revenue by product type and the timing of recognition of revenue for transfer of goods and services to customers:
| Fiscal Year Ended December 29, 2024
| Topic 606 Revenue |  | Lease Revenue Per Topic 842 |  |
| Point-in-Time |  | Over Time |  |  | Total Revenue
ATS development |  |  |  |  |  |  |
Time-and-materials and cost-plus-fixed-fee contracts | $ | — |  |  | $ | 140,482 |  |  | $ | — |  |  | $ | 140,482 |
Fixed price contracts | 12,665 |  |  | 80,830 |  |  | — |  |  | 93,495 |
Other | — |  |  | — |  |  | 4,668 |  |  | 4,668 |
Total ATS development | 12,665 |  |  | 221,312 |  |  | 4,668 |  |  | 238,645 |
Wafer Services | 1,803 |  |  | 25,058 |  |  | — |  |  | 26,861 |
Combined ATS development and Wafer Services | 14,468 |  |  | 246,370 |  |  | 4,668 |  |  | 265,506 |
Tools | 76,763 |  |  | — |  |  | — |  |  | 76,763 |
Total | $ | 91,231 |  |  | $ | 246,370 |  |  | $ | 4,668 |  |  | $ | 342,269 |
| Fiscal Year Ended December 31, 2023
| Topic 606 Revenue |  | Lease Revenue Per Topic 842 |  |
| Point-in-Time |  | Over Time |  |  | Total Revenue
ATS development |  |  |  |  |  |  |
Time-and-materials and cost-plus-fixed-fee contracts | — |  |  | $ | 122,343 |  |  | — |  |  | $ | 122,343 |
Fixed price contracts | — |  |  | 83,893 |  |  | — |  |  | 83,893 |
Other | — |  |  | — |  |  | 4,668 |  |  | 4,668 |
Total ATS development | — |  |  | 206,236 |  |  | 4,668 |  |  | 210,904 |
Wafer Services | 7,564 |  |  | 53,563 |  |  | — |  |  | 61,127 |
Combined ATS development and Wafer Services | 7,564 |  |  | 259,799 |  |  | 4,668 |  |  | 272,031 |
Tools | 14,651 |  |  | — |  |  | — |  |  | 14,651 |
Total | $ | 22,215 |  |  | $ | 259,799 |  |  | $ | 4,668 |  |  | $ | 286,682 |
| Fiscal Year Ended January 1, 2023
| Topic 606 Revenue |  | Lease Revenue Per Topic 842 |  |
| Point-in-Time |  | Over Time |  |  | Total Revenue
ATS development |  |  |  |  |  |  |
Time-and-materials and cost-plus-fixed-fee contracts | $ | — |  |  | $ | 85,294 |  |  | $ | — |  |  | $ | 85,294 |
Fixed price contracts | — |  |  | 47,938 |  |  | — |  |  | 47,938 |
Other | — |  |  | — |  |  | 4,668 |  |  | 4,668 |
Total ATS development | — |  |  | 133,232 |  |  | 4,668 |  |  | 137,900 |
Wafer Services (1) | 20,212 |  |  | 53,283 |  |  | $ | — |  |  | $ | 73,495 |
Combined ATS development and Wafer Services | 20,212 |  |  | 186,515 |  |  | 4,668 |  |  | 211,395 |
Tools | 1,546 |  |  | — |  |  | — |  |  | 1,546 |
Total | $ | 21,758 |  |  | $ | 186,515 |  |  | $ | 4,668 |  |  | $ | 212,941 |
__________________ (1)As discussed in Note 3 – Summary of Significant Accounting Policies, in March 2022, the Company signed a new contract with a significant Wafer Services customer that resulted in a change from the point in time revenue recognition method to the over-time, input revenue recognition method. As a result of the transition, the Company recognized a one-time, cumulative adjustment to Wafer Services revenue of $8,290 for wafers still being manufactured at the time the new contract became enforceable. For the fiscal year ended January 1, 2023, $11,049 of Wafer Services revenues were recognized using the point in time method related to the period before the new contract was enforceable and $48,798 of Wafer Services revenues, inclusive of the one-time, cumulative adjustment, were recognized using the over-time, input method after the contract was enforceable.
Schedule of Contract Assets and Liabilities | The table below shows contract asset detail information on a gross basis:
Balance at January 1, 2023 | $ | 34,625 |
Transfers to accounts receivable, net | (33,868) |
Increase due to revenue recognized in advance of customer billings | 29,008 |
Balance at December 31, 2023 | 29,765 |
Transfers to accounts receivable, net | (29,230) |
Increase due to revenue recognized in advance of customer billings | 20,397 |
Balance at December 29, 2024 | $ | 20,932 |
The contract liabilities and other significant components of contract liabilities at December 29, 2024 and December 31, 2023 are as follows:
| December 29, 2024 |  | December 31, 2023
| Contract Deferred Revenue (1) |  | Lease Deferred Revenue |  | Total Contract Liabilities |  | Contract Deferred Revenue (1) |  | Lease Deferred Revenue |  | Total Contract Liabilities
Current contract liabilities | $ | 53,222 |  |  | $ | 1,944 |  |  | $ | 55,166 |  |  | $ | 44,883 |  |  | $ | 4,668 |  |  | $ | 49,551 |
Long-term contract liabilities | 51,901 |  |  | — |  |  | 51,901 |  |  | 63,810 |  |  | 1,944 |  |  | 65,754 |
Total contract liabilities | $ | 105,123 |  |  | $ | 1,944 |  |  | $ | 107,067 |  |  | $ | 108,693 |  |  | $ | 6,612 |  |  | $ | 115,305 |
__________________ (1)Contract deferred revenue includes $48,200 and $59,323 at December 29, 2024 and December 31, 2023, respectively, related to material rights provided to a significant customer in exchange for funding additional manufacturing capacity. Of these amounts, $11,123 and $11,123 were classified as current in the consolidated balance sheets at December 29, 2024 and December 31, 2023, respectively The change in contract liabilities is as follows:
Balance at January 1, 2023 | $ | 84,875 |
Revenue recognized included in the balance at the beginning of the year | (22,014) |
Increase due to payments received, excluding amounts recognized as revenue | 45,832 |
Balance at December 31, 2023 | 108,693 |
Revenue recognized included in the balance at the beginning of the year | (63,575) |
Increase due to payments received, excluding amounts recognized as revenue | 60,005 |
Balance at December 29, 2024 | $ | 105,123 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
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