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Net Income (Loss) per Common Share
 9 Months Ended
Feb. 29, 2020
Earnings Per Share [Abstract]  
Net Income (Loss) per Common Share Net Income (Loss) per Common Share  
Basic net loss per share was calculated by dividing net loss by the weighted-average number of common shares outstanding during the period.  Diluted net loss per share was calculated by dividing net income by the weighted-average number of common shares outstanding during the period plus the dilutive effects of options and restricted stock.  Due to the net loss in the thirty-nine weeks ended February 29, 2020, restricted shares were excluded from the calculation of diluted net loss per share because their inclusion would have been antidilutive. The computations of basic and diluted net loss per share attributable to the Company are as follows (in thousands, except per share data):

13 Weeks Ended39 Weeks Ended
February 29, 2020March 2, 2019February 29, 2020March 2, 2019
Net income (loss) attributable to Cal-Maine Foods, Inc.$13,749  $39,777  $(42,072) $73,989  
Basic weighted-average common shares48,473  48,417  48,455  48,416  
Effect of dilutive securities:
Restricted shares115  116  —  129  
Dilutive potential common shares48,588  48,533  48,455  48,545  
Antidilutive securities excluded from computation of earnings per share—  —  121  —  
Net income (loss) per common share attributable to Cal-Maine Foods, Inc.:
Basic$0.28  $0.82  $(0.87) $1.53  
Diluted$0.28  $0.82  $(0.87) $1.52