Stock-based compensation - Narrative (Details) $ in Thousands		12 Months Ended
	Oct. 16, 2019 USD ($) shares	May 25, 2025 USD ($) plan tranche shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of plans \| plan		2
Unrecognized compensation expense \| $		$ 13,865
Weighted-average period		2 years
2019 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)		2,030,822
Equity Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)		298,387
Nonemployee \| 2019 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum recipient award amount \| $	$ 120
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		4 years
Stock options \| 2019 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares per employee (in shares)	500,000
RSUs \| 2019 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares per employee (in shares)	250,000
RSUs \| Equity Inducement Plan \| Tranche one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		5 years
Stock appreciation rights \| 2019 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares per employee (in shares)	500,000
PSUs \| Equity Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches \| tranche		10
Performance period		5 years
PSUs \| Equity Inducement Plan \| Tranche one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage		50.00%
PSUs \| Equity Inducement Plan \| Tranche two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
Award vesting percentage		50.00%

LIFECORE BIOMEDICAL, INC. \DE\ 10-K