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Goodwill and Intangible Assets - Changes in Goodwill (Details) - USD ($)
$ in Thousands
12 Months Ended
May 26, 2019
May 27, 2018
Goodwill [Roll Forward]    
Balance at beginning of year $ 54,510 $ 54,510
Acquisition of Yucatan (Note 2) 22,232 0
Balance at end of year $ 76,742 $ 54,510