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Investment in Non-public Company (Details) - USD ($) |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
Jun. 01, 2021 | Oct. 29, 2014 | Jul. 15, 2014 | Feb. 15, 2011 | May 30, 2021 | May 31, 2020 | May 26, 2019
Investment Holdings [Line Items] |  |  |  |  |  |  |
Dividend income |  |  |  |  | $ 1,125,000 | $ 1,125,000 | $ 1,650,000
Windset |  |  |  |  |  |  |
Investment Holdings [Line Items] |  |  |  |  |  |  |
Investment ownership percentage |  |  | 26.90% |  | 26.90% |  |
Dividend income |  |  |  |  | $ 1,100,000 | 1,100,000 | $ 1,700,000
Change in market value of company's investment |  |  |  |  | 11,800,000 | $ (4,200,000) |
Windset | Curation Foods |  |  |  |  |  |  |
Investment Holdings [Line Items] |  |  |  |  |  |  |
Payments to acquire investments |  |  | $ 11,000,000.0 |  |  |  |
Time frame to be paid after anniversary |  |  | 90 days |  |  |  |
Liquidation value |  |  |  |  | 20,100,000 |  |
Windset | Curation Foods | Subsequent Event |  |  |  |  |  |  |
Investment Holdings [Line Items] |  |  |  |  |  |  |
Payments for repurchase of equity | $ 45,100,000 |  |  |  |  |  |
Windset | Curation Foods | Senior A Preferred Stock |  |  |  |  |  |  |
Investment Holdings [Line Items] |  |  |  |  |  |  |
Liquidation value |  |  |  |  | 15,000,000.0 |  |
Windset | Curation Foods | Junior Preferred Shares |  |  |  |  |  |  |
Investment Holdings [Line Items] |  |  |  |  |  |  |
Preferred stock investment, dividends declared |  |  |  |  | 0 |  |
Liquidation value |  |  |  |  | $ 5,100,000 |  |
Windset | Curation Foods | Senior A Preferred Stock |  |  |  |  |  |  |
Investment Holdings [Line Items] |  |  |  |  |  |  |
Investment in non-public company shares (in shares) |  |  |  | 150,000 |  |  |
Payments to acquire investments |  |  |  | $ 15,000,000.0 |  |  |
Windset | Curation Foods | Common Stock |  |  |  |  |  |  |
Investment Holdings [Line Items] |  |  |  |  |  |  |
Investment in non-public company shares (in shares) |  |  | 68 | 201 |  |  |
Payments to acquire investments |  |  |  | $ 201 |  |  |
Windset | Curation Foods | Junior Preferred Shares |  |  |  |  |  |  |
Investment Holdings [Line Items] |  |  |  |  |  |  |
Investment in non-public company shares (in shares) |  |  | 51,211 |  |  |  |
Windset | Curation Foods | Senior B Preferred Stock |  |  |  |  |  |  |
Investment Holdings [Line Items] |  |  |  |  |  |  |
Investment in non-public company shares (in shares) |  | 70,000 |  |  |  |  | 70,000
Payments to acquire investments |  | $ 7,000,000.0 |  |  |  |  |
Dividend percentage rate |  | 7.50% |  |  |  |  |
Put option for preferred shares |  |  |  |  |  |  | $ 7,000,000.0
Senior A Preferred Stock |  |  |  |  |  |  |
Investment Holdings [Line Items] |  |  |  |  |  |  |
Dividend percentage rate |  |  | 7.50% |  |  |  |
Other Income | Windset |  |  |  |  |  |  |
Investment Holdings [Line Items] |  |  |  |  |  |  |
Change in market value of company's investment |  |  |  |  |  |  | $ (1,600,000)

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