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Income Taxes (Tables) | 12 Months Ended
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Jan. 01, 2022
Income Taxes |
Schedule of income before income taxes | Loss from continuing operations before income taxes includes the following components (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended
​ | ​ | January 1, | ​ | January 2, | ​ | December 28,
​ |  | 2022 |  | 2021 | ​ | 2019
Domestic |  | $ | (29,112) |  | $ | (58,104) |  | $ | (38,448)
Foreign | ​ | ​ | (29,063) | ​ |  | (74,099) | ​ |  | (57,563)
​ | ​ | $ | (58,175) | ​ | $ | (132,203) | ​ | $ | (96,011)
Schedule of provision (benefit) for income taxes | The provision (benefit) for income taxes consists of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended
​ | ​ | January 1, | ​ | January 2, | ​ | December 28,
​ |  | 2022 |  | 2021 |  | 2019
Current: |  |  |  |  |  |
Domestic | ​ | $ | (12,630) | ​ | $ | (9,740) | ​ | $ | (20,962)
Foreign | ​ | ​ | 9,447 | ​ |  | 1,656 | ​ |  | 4,940
Total Current | ​ | ​ | (3,183) | ​ |  | (8,084) | ​ |  | (16,022)
Deferred: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Domestic | ​ | ​ | 17,873 | ​ |  | (4,031) | ​ |  | 33,624
Foreign | ​ | ​ | (1,263) | ​ |  | (2,487) | ​ |  | (10,618)
Total Deferred | ​ | ​ | 16,610 | ​ |  | (6,518) | ​ |  | 23,006
Provision (benefit) for income taxes | ​ | $ | 13,427 | ​ | $ | (14,602) | ​ | $ | 6,984
Schedule of reconciliation of federal statutory tax rate to effective tax rate | The reconciliation of the federal statutory tax rate to the Company’s effective tax rate is as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended |
​ | ​ | January 1, | ​ | January 2, | ​ | December 28, |
​ |  | 2022 |  | 2021 |  | 2019 |
Federal statutory rate |  | 21.0 | % | 21.0 | % | 21.0 | %
Foreign tax rate benefit |  | (12.5) | ​ | (11.1) | ​ | (9.7) | ​
Research and development tax credits |  | 0.1 | ​ | 4.2 | ​ | 5.3 | ​
GILTI and Subpart F Income | ​ | (1.8) | ​ | 0.2 | ​ | 0.2 | ​
(Nondeductible) nontaxable foreign items | ​ | (4.9) | ​ | 0.1 | ​ | (2.5) | ​
Nondeductible officer compensation |  | (7.8) | ​ | (1.7) | ​ | (2.0) | ​
Change in cost-sharing treatment of stock-based compensation | ​ | — | ​ | — | ​ | (19.2) | ​
Excess tax benefit of stock-based compensation | ​ | 2.8 | ​ | 0.4 | ​ | 0.8 | ​
Other tax effects of equity compensation | ​ | 0.4 | ​ | 0.1 | ​ | 0.7 | ​
Change in prior period valuation allowance | ​ | (8.0) | ​ | (0.3) | ​ | (0.7) | ​
(Nondeductible) nontaxable domestic items | ​ | (2.1) | ​ | (1.6) | ​ | (1.6) | ​
Net operating loss not benefited | ​ | (9.5) | ​ | — | ​ | — | ​
Other |  | (0.8) | ​ | (0.3) | ​ | 0.4 | ​
Effective tax rate |  | (23.1) | % | 11.0 | % | (7.3) | %
​
Schedule of significant components of deferred taxes | Significant components of the Company’s deferred taxes as of January 1, 2022 and January 2, 2021 were as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | January 1, |  | January 2,
​ |  | 2022 |  | 2021
Deferred tax assets: |  | ​ | ​ | ​ | ​ | ​
Net operating loss carryforwards |  | $ | 5,803 | ​ | $ | 6,839
Tax credit carryforwards | ​ | ​ | 12,247 | ​ | ​ | 22,421
Intangible assets | ​ | ​ | 8,687 | ​ | ​ | 9,802
Deferred income on shipments to distributors |  |  | 4,588 | ​ |  | 3,099
Leases | ​ | ​ | 6,033 | ​ | ​ | 6,335
Accrued liabilities |  |  | 6,078 | ​ |  | 6,320
Other | ​ | ​ | 4,180 | ​ | ​ | 5,513
​ |  |  | 47,616 | ​ |  | 60,329
Less: Valuation allowance |  |  | (9,529) | ​ |  | (5,311)
​ |  |  | 38,087 | ​ |  | 55,018
Deferred tax liabilities: |  | ​ | ​ | ​ | ​ | ​
Intangible assets | ​ | ​ | 14,479 | ​ | ​ | 16,758
Fixed assets | ​ | ​ | 8,692 | ​ | ​ | 8,473
Leases | ​ | ​ | 5,664 | ​ | ​ | 5,999
Debt | ​ | ​ | 16,399 | ​ | ​ | 21,674
Unrealized gain on equity method investment | ​ | ​ | 3,342 | ​ | ​ | 587
Prepaid expenses and other |  |  | 6,049 | ​ |  | 4,332
​ |  |  | 54,625 | ​ |  | 57,823
​ | ​ | ​ | ​ | ​ | ​ | ​
Net deferred tax assets (liabilities) |  | $ | (16,538) | ​ | $ | (2,805)
Schedule of valuation allowance | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Balance at | ​ | Additions | ​ |  | ​ | ​ |  | ​
​ | ​ | Beginning of | ​ | Charged to | ​ | ​ | ​ | ​ | Balance at
​ |  | Period |  | Expenses |  | Deductions |  | End of Period
Year ended January 1, 2022 | ​ | $ | 5,311 |  | $ | 5,370 |  | $ | (1,152) |  | $ | 9,529
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Year ended January 2, 2021 | ​ | $ | 4,486 |  | $ | 847 |  | $ | (22) |  | $ | 5,311
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Year ended December 28, 2019 | ​ | $ | 4,975 |  | $ | 1,044 |  | $ | (1,533) |  | $ | 4,486
Schedule of activity related to gross unrecognized tax benefits | The following table summarizes the activity related to gross unrecognized tax benefits (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended
​ | ​ | January 1, | ​ | January 2, | ​ | December 28,
​ |  | 2022 |  | 2021 |  | 2019
Beginning balance | ​ | $ | 2,853 | ​ | $ | 2,276 | ​ | $ | 2,036
Additions based on tax positions related to current year | ​ |  | 830 | ​ |  | 577 | ​ |  | 436
Reductions based on tax positions related to prior years | ​ | ​ | (6) | ​ | ​ | — | ​ | ​ | (196)
Ending balance | ​ | $ | 3,677 | ​ | $ | 2,853 | ​ | $ | 2,276

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