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Income taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | May 25, 2025 | May 26, 2024
--- | --- | ---
Deferred tax assets: |  |
Net operating loss carryforwards | $ 40,677 | $ 40,806
Limitations on business interest expense | 15,573 | 11,783
Research credit carryforwards | 7,116 | 6,700
Capitalized research and development | 3,767 | 2,916
Other | 6,338 | 4,609
Deferred tax assets before valuation allowance | 73,471 | 66,814
Less: valuation allowance | (54,714) | (46,173)
Deferred tax assets | 18,757 | 20,641
Deferred tax liabilities: |  |
Depreciation | (10,735) | (11,809)
Debt derivative liability and related debt discount | (7,026) | (7,911)
Other | (1,419) | (1,464)
Deferred tax liabilities | (19,180) | (21,184)
Net deferred tax liability | $ (423) | $ (543)

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