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Organization, Basis of Presentation, and Summary of Significant Accounting Policies - Narrative (Details) | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
May 27, 2018 USD ($) $ / shares | May 26, 2019 USD ($) brand technology_platform $ / shares customer shares | May 27, 2018 USD ($) $ / shares customer shares | May 28, 2017 USD ($) $ / shares shares | Aug. 25, 2019 USD ($) | Jan. 11, 2019 brand | Jul. 15, 2014
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Number of natural food brands | brand |  | 4 |  |  |  | 4 |
Number of emerging natural food brands | brand |  |  |  |  |  | 3 |
Number of new natural food brands | brand |  | 2 |  |  |  | 2 |
Number of proprietary platforms | technology_platform |  | 2 |  |  |  |  |
Restricted cash | $ 325,000 | $ 385,000 | $ 325,000 | $ 325,000 |  |  |
Advertising expense |  | 1,300,000 | 1,400,000 | 1,900,000 |  |  |
Notes or advances outstanding | $ 2,700,000 | 2,000,000 | 2,700,000 |  |  |  |
Goodwill impairment loss |  | $ 0 | $ 0 | $ 0 |  |  |
Amount of common stock available for purchase (in shares) | shares |  | 1,576,919 | 1,495,380 | 1,428,272 |  |  |
Weighted average exercise price of common stock (in dollars per share) | $ / shares | $ 13.80 | $ 13.74 | $ 13.80 | $ 13.58 |  |  |
Company contribution to employee contribution plan |  | $ 1,800,000 | $ 1,800,000 | $ 1,500,000 |  |  |
Subsequent Event | Scenario, Forecast | ASU 2016-02 |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Transitional adjustment for accounting standards update |  |  |  |  | $ 300,000 |  |
Right-of-use asset, operating lease |  |  |  |  | 30,000,000 |  |
Lease liability, operating |  |  |  |  | $ 31,100,000 |  |
Apio Cooling, LP |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Payments to acquire additional interest in subsidiaries | $ 4,700,000 |  |  |  |  |  |
Decrease in additional paid-in-capital | 2,600,000 |  |  |  |  |  |
Amount in Apio Cooling's non-controlling interest account | 1,500,000 |  | 1,500,000 |  |  |  |
Maximum |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount participants are allowed to contribute of their salaries |  | 50.00% |  |  |  |  |
Maximum | Customer relationships |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Useful life of finite-lived intangible assets |  | 13 years |  |  |  |  |
Minimum |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amount participants are allowed to contribute of their salaries |  | 1.00% |  |  |  |  |
Minimum | Customer relationships |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Useful life of finite-lived intangible assets |  | 11 years |  |  |  |  |
Buildings and Leasehold Improvements | Maximum |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Useful life of property and equipment |  | 40 years |  |  |  |  |
Buildings and Leasehold Improvements | Minimum |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Useful life of property and equipment |  | 3 years |  |  |  |  |
Furniture and Fixtures, Computers, Capitalized Software, Capitalized Leases, Machinery, Equipment and Autos | Maximum |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Useful life of property and equipment |  | 20 years |  |  |  |  |
Furniture and Fixtures, Computers, Capitalized Software, Capitalized Leases, Machinery, Equipment and Autos | Minimum |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Useful life of property and equipment |  | 3 years |  |  |  |  |
Software Development | Maximum |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Useful life of property and equipment |  | 7 years |  |  |  |  |
Software Development | Minimum |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Useful life of property and equipment |  | 3 years |  |  |  |  |
First Three Percent Match |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Company match of contribution plan, percent |  | 100.00% |  |  |  |  |
Percent of employees' gross pay |  | 3.00% |  |  |  |  |
Next Two Percent Match |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Company match of contribution plan, percent |  | 50.00% |  |  |  |  |
Percent of employees' gross pay |  | 2.00% |  |  |  |  |
Windset |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Accounts receivable balance from related parties | $ 300,000 | $ 500,000 | 300,000 |  |  |  |
Windset | Cost of sales |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Revenue from related parties |  | $ 600,000 | $ 600,000 | $ 500,000 |  |  |
Sales Revenue, Goods, Net | Customer Concentration Risk |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Number of major customers | customer |  | 5 | 5 |  |  |  |
Concentration risk |  | 43.00% | 49.00% |  |  |  |
Sales Revenue, Goods, Net | Customer Concentration Risk | Costco and Wal-mart |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Number of major customers | customer |  | 2 | 2 |  |  |  |
Sales Revenue, Goods, Net | Customer Concentration Risk | Costco |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Concentration risk |  | 14.00% | 19.00% |  |  |  |
Sales Revenue, Goods, Net | Customer Concentration Risk | Wal-mart |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Concentration risk |  | 16.00% | 18.00% |  |  |  |
Accounts Receivable | Customer Concentration Risk | Costco and Wal-mart |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Number of major customers | customer |  | 2 | 2 |  |  |  |
Accounts Receivable | Customer Concentration Risk | Costco |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Concentration risk |  | 8.00% | 13.00% |  |  |  |
Accounts Receivable | Customer Concentration Risk | Wal-mart |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Concentration risk |  | 13.00% | 18.00% |  |  |  |
Accounts Receivable | Customer Concentration Risk | Customer One |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Concentration risk |  | 13.00% |  |  |  |  |
Accounts Receivable | Customer Concentration Risk | Customer Two |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Concentration risk |  | 8.00% |  |  |  |  |
Accounts Receivable | Customer Concentration Risk | Customer Three |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Concentration risk |  | 6.00% |  |  |  |  |
Apio Cooling, LP |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Non-controlling voting interest acquired | 40.00% |  | 40.00% |  |  |  |
Windset |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Investment ownership percentage |  | 26.90% |  |  |  |  | 26.90%
Trade Names |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Intangible assets |  | $ 2,000,000 | $ 0 |  |  |  |

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